| Portsmouth Rhode Island Weather Almanac |
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| Saturday,
July 17, 2021 |
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| Dense Fog
early, Partly Cloudy/Hazy Day to Mostly Cloudy, Foggy PM, Light Winds, Hot
& Very Muggy |
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| Climate Normal
Period |
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Climate Record Period |
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| 1991- 2020 |
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1893 - 2021 |
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July 17, 2021 |
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Record |
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Record |
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| Observed Daily Data |
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2021 |
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2020 |
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Norm |
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Depart |
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Highest |
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Lowest |
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| Maximum Temperature |
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87 |
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71 |
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80 |
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+7 |
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90 |
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in |
1953 |
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67 |
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in |
1989 |
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| Minimum
Temperature |
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72 |
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59 |
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65 |
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+7 |
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72 |
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in |
2021 |
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49 |
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in |
1954 |
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| Average Temperature |
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80 |
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65 |
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73 |
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+7 |
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80 |
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in |
2021 |
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63 |
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in |
1989 |
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| Month Avg Max Temperature |
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78.1 |
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79.9 |
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79.5 |
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-1.4 |
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84.8 |
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in |
1993 |
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73.9 |
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in |
1906 |
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| Month
Avg Min Temperature |
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64.8 |
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64.6 |
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64.2 |
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+0.5 |
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70.7 |
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in |
2013 |
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57.5 |
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in |
1962 |
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| Month Average
Temperature |
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71.8 |
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72.5 |
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72.2 |
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-0.5 |
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76.8 |
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in |
2013 |
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66.9 |
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in |
1933 |
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| HDD |
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0 |
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0 |
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0 |
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+0 |
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2 |
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in |
1989 |
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0 |
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in |
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| Month HDD |
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9 |
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0 |
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3 |
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+6 |
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23 |
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in |
1914 |
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0 |
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in |
2020 |
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| Season HDD |
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9 |
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0 |
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3 |
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+6 |
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23 |
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in |
1914 |
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0 |
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in |
2020 |
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| CDD |
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15 |
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0 |
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8 |
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+7 |
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15 |
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in |
2021 |
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0 |
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in |
2020 |
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| Month CDD |
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124 |
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128 |
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123 |
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+1 |
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200 |
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in |
2013 |
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44 |
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in |
2009 |
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| Year CDD |
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286 |
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261 |
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216 |
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+70 |
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324 |
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in |
2010 |
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78 |
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in |
2009 |
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| Maximum Dew Point |
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79 |
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69 |
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69 |
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+10 |
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79 |
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in |
2021 |
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53 |
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in |
1966 |
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| Minimum
Dew Point |
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71 |
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55 |
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61 |
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+10 |
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71 |
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in |
2021 |
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44 |
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in |
1993 |
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| Average Dew Point |
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75 |
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62 |
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65 |
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+10 |
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75 |
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in |
2021 |
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49 |
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in |
1993 |
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| Month Avg Max Dew Point |
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71.0 |
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70.0 |
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68.2 |
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+2.8 |
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73.9 |
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in |
2013 |
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59.8 |
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in |
1978 |
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| Month
Avg Min Dew Point |
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62.4 |
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62.1 |
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59.6 |
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+2.8 |
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68.2 |
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in |
2013 |
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50.3 |
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in |
1962 |
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| Month Average Dew Point |
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66.7 |
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66.0 |
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63.9 |
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+2.8 |
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71.1 |
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in |
2013 |
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55.4 |
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in |
1962 |
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| Precipitation |
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.00 |
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.12 |
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.09 |
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-.09 |
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2.67 |
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in |
1989 |
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| One Hour |
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.00 |
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.09 |
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.69 |
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in |
1989 |
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| Hourly Rate |
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.00 |
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.56 |
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2.07 |
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in |
2009 |
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| Month Precipitation |
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3.46 |
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1.06 |
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1.73 |
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+1.73 |
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5.03 |
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in |
1959 |
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T |
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in |
1982 |
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| Year Precipitation |
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22.52 |
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22.08 |
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24.30 |
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-1.78 |
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40.76 |
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in |
1998 |
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13.52 |
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in |
1957 |
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| Snow |
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0.0 |
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0.0 |
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##### |
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##### |
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0.0 |
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in |
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| Snow Depth |
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0 |
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0 |
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0 |
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in |
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| Month Snow |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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in |
#N/A |
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#N/A |
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in |
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| Season Snow |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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#N/A |
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in |
#N/A |
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#N/A |
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in |
#N/A |
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July
17, 2021 |
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|
Record |
Record |
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| Observed Daily Data |
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2021 |
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2020 |
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Norm |
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Depart |
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Highest |
Lowest |
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| Maximum Humidity |
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99% |
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95% |
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92% |
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+7% |
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100% |
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in |
2017 |
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64% |
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in |
1952 |
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| Minimum
Humidity |
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75% |
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81% |
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56% |
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+19% |
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91% |
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in |
2005 |
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29% |
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in |
1957 |
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| Average Humidity |
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87% |
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88% |
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74% |
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+13% |
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96% |
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in |
2005 |
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51% |
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in |
1952 |
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| Maximum Barometer |
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30.08 |
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30.28 |
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30.04 |
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+00.04 |
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30.39 |
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in |
1945 |
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29.77 |
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in |
1983 |
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| Minimum
Barometer |
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30.02 |
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30.04 |
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29.87 |
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+00.15 |
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30.09 |
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in |
2005 |
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29.53 |
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in |
1980 |
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| Average Barometer |
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30.05 |
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30.16 |
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29.95 |
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+00.10 |
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30.17 |
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in |
1990 |
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29.68 |
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in |
1983 |
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| Average Wind |
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3.2 |
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3.7 |
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5.3 |
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-2.1 |
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12.1 |
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in |
1971 |
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2.2 |
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in |
2006 |
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| Direction |
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SSE |
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SSE |
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SSW |
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SW |
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SSE |
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| High Wind Gust |
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16 |
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20 |
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20 |
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-4 |
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36 |
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in |
1989 |
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12 |
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in |
2017 |
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| Direction |
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S |
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SSE |
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SSW |
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NE |
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SSE |
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| High
Heat Index |
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100 |
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74 |
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83 |
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+17 |
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100 |
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in |
2021 |
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| Low Wind Chill |
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#N/A |
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in |
#N/A |
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| Maximum Water Temp |
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74.6 |
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66.7 |
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71.2 |
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+3.4 |
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78.4 |
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in |
2013 |
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66.7 |
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in |
2020 |
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| Minimum
Water Temp |
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71.9 |
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64.6 |
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67.2 |
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+4.7 |
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71.9 |
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in |
2021 |
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62.1 |
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in |
2001 |
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| Average Water Temp |
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73.3 |
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65.7 |
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69.2 |
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+4.0 |
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74.0 |
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in |
2013 |
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65.7 |
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in |
2020 |
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| Sunrise/ AM Twilight |
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5:27:11 AM |
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4:54:40 AM |
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| Sunset /
PM Twilight |
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8:15:51 PM |
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8:48:22 PM |
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| Length Of Day |
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14:48:40 |
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| Special Conditions |
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Dense Fog, Haze |
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| Comments |
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Record breaking heat and dew points |
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| Hour-by-Hour Weather For July 17, 2021 |
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| Climate Weather for July 17 |
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| Weather History For July 17 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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