| Portsmouth Rhode Island Weather Almanac |
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| Sunday,
August 15, 2021 |
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| Mostly
Cloudy early, Clear Day to Partly Cloudy PM and Cooler |
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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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August 15, 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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81 |
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75 |
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79 |
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+2 |
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91 |
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in |
1928 |
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65 |
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in |
1905 |
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| Minimum
Temperature |
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66 |
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66 |
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64 |
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+2 |
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74 |
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in |
2016 |
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53 |
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in |
1964 |
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| Average Temperature |
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74 |
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71 |
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71 |
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+3 |
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81 |
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in |
2016 |
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61 |
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in |
1992 |
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| Month Avg Max Temperature |
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81.0 |
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84.7 |
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79.3 |
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+1.7 |
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84.9 |
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in |
1944 |
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72.3 |
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in |
1964 |
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| Month Avg
Min Temperature |
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65.8 |
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69.1 |
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64.6 |
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+1.2 |
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72.3 |
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in |
1988 |
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55.6 |
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in |
1964 |
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| Month Average
Temperature |
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73.7 |
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77.1 |
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71.9 |
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+1.7 |
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78.9 |
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in |
1988 |
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64.3 |
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in |
1964 |
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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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4 |
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in |
1992 |
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0 |
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in |
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| Month 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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21 |
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in |
1964 |
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0 |
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in |
2021 |
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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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34 |
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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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9 |
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6 |
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7 |
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+2 |
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16 |
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in |
2016 |
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0 |
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in |
1992 |
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| Month CDD |
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130 |
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182 |
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112 |
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+18 |
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208 |
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in |
1988 |
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11 |
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in |
1964 |
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| Year CDD |
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520 |
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646 |
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440 |
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+80 |
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646 |
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in |
2020 |
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208 |
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in |
1902 |
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| Maximum Dew Point |
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65 |
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67 |
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68 |
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-3 |
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76 |
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in |
1959 |
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46 |
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in |
1964 |
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| Minimum
Dew Point |
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57 |
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62 |
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60 |
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-3 |
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70 |
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in |
1989 |
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40 |
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in |
1968 |
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| Average Dew Point |
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61 |
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65 |
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64 |
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-3 |
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72 |
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in |
1989 |
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43 |
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in |
1964 |
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| Month Avg Max Dew Point |
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71.1 |
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72.9 |
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68.8 |
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+2.3 |
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74.2 |
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in |
2018 |
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57.4 |
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in |
1964 |
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| Month Avg
Min Dew Point |
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62.7 |
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64.7 |
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60.9 |
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+1.8 |
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68.3 |
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in |
2003 |
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46.7 |
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in |
1964 |
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| Month Average Dew Point |
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66.9 |
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68.8 |
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64.7 |
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+2.2 |
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71.0 |
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in |
2018 |
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52.1 |
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in |
1964 |
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| Precipitation |
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.00 |
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.00 |
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.12 |
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-.12 |
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2.69 |
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in |
1973 |
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| One Hour |
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.00 |
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.00 |
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1.17 |
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in |
2012 |
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| Hourly Rate |
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.00 |
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.00 |
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9.60 |
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in |
2012 |
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| Month Precipitation |
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4.02 |
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.55 |
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1.79 |
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+2.23 |
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7.15 |
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in |
1946 |
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.07 |
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in |
1940 |
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| Year Precipitation |
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26.85 |
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22.93 |
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27.44 |
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-.59 |
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43.87 |
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in |
1983 |
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15.70 |
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in |
1957 |
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| 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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| Snow Depth |
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#N/A |
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#N/A |
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#N/A |
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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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August
15, 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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86% |
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91% |
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92% |
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-6% |
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100% |
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in |
2005 |
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56% |
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in |
1968 |
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| Minimum
Humidity |
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48% |
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76% |
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61% |
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-13% |
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92% |
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in |
1973 |
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33% |
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in |
1968 |
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| Average Humidity |
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67% |
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84% |
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76% |
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-9% |
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96% |
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in |
1973 |
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45% |
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in |
1968 |
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| Maximum Barometer |
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30.19 |
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30.06 |
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30.07 |
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+00.12 |
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30.40 |
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in |
1946 |
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29.80 |
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in |
1953 |
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| Minimum
Barometer |
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30.09 |
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29.95 |
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29.88 |
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+00.21 |
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30.17 |
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in |
2002 |
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29.48 |
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in |
1988 |
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| Average Barometer |
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30.14 |
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30.01 |
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29.98 |
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+00.16 |
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30.21 |
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in |
2004 |
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29.67 |
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in |
1953 |
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| Average Wind |
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5.3 |
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7.5 |
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6.0 |
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-0.7 |
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12.4 |
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in |
1988 |
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2.1 |
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in |
1989 |
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| Direction |
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SSE |
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NNE |
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SSW |
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WSW |
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SW |
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| High Wind Gust |
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21 |
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26 |
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21 |
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+0 |
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38 |
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in |
1961 |
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11 |
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in |
2017 |
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| Direction |
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NE |
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NNE |
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SW |
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S |
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SSE |
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| High
Heat Index |
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81 |
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76 |
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80 |
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+1 |
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94 |
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in |
1985 |
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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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74.5 |
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68.0 |
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71.7 |
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+2.8 |
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76.0 |
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in |
2003 |
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68.0 |
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in |
2020 |
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| Minimum
Water Temp |
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71.9 |
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65.7 |
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68.6 |
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+3.3 |
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73.9 |
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in |
2018 |
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64.8 |
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in |
2004 |
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| Average Water Temp |
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73.2 |
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66.9 |
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70.1 |
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+3.1 |
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74.8 |
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in |
2018 |
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66.5 |
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in |
2004 |
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| Sunrise/ AM Twilight |
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5:55:17 AM |
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5:25:40 AM |
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| Sunset /
PM Twilight |
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7:43:45 PM |
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8:13:21 PM |
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| Length Of Day |
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13:48:28 |
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| Special Conditions |
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None |
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| Comments |
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| Hour-by-Hour Weather For August 15, 2021 |
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| Climate Weather for August 15 |
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| Weather History For August 15 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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