| Portsmouth Rhode Island Weather Almanac |
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| Thursday,
September 16, 2021 |
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| Cloudy,
Heavy Rain & Thunderstorm early, P Cloudy Day to Mostly Cloudy PM and
Cooler |
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Climate
Normal Period |
Climate Record Period |
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1991 -
2020 |
1893 - 2021 |
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September 16, 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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74 |
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71 |
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72 |
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+2 |
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87 |
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in |
1941 |
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57 |
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in |
1954 |
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| Minimum
Temperature |
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65 |
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52 |
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57 |
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+8 |
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70 |
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in |
1915 |
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44 |
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in |
1988 |
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| Average Temperature |
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70 |
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62 |
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65 |
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+5 |
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78 |
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in |
1915 |
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54 |
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in |
1984 |
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| Month Avg Max Temperature |
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76.1 |
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76.8 |
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74.3 |
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+1.8 |
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81.9 |
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in |
1961 |
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68.6 |
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in |
1917 |
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| Month Avg
Min Temperature |
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61.7 |
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60.0 |
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59.4 |
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+2.3 |
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65.8 |
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in |
1961 |
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52.8 |
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in |
1893 |
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| Month Average
Temperature |
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69.2 |
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68.7 |
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66.8 |
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+2.4 |
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74.0 |
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in |
1961 |
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61.5 |
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in |
1963 |
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| High
Heat Index |
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75 |
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70 |
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72 |
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+3 |
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92 |
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in |
1991 |
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| Low Wind Chill |
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43 |
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in |
1988 |
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| HDD |
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0 |
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3 |
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2 |
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-2 |
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11 |
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in |
1984 |
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0 |
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in |
2021 |
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| Month HDD |
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1 |
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12 |
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20 |
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-19 |
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79 |
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in |
1913 |
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0 |
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in |
2015 |
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| Season HDD |
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10 |
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12 |
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27 |
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-17 |
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95 |
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in |
1914 |
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0 |
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in |
2015 |
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| CDD |
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5 |
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0 |
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2 |
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+3 |
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13 |
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in |
1915 |
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0 |
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in |
2020 |
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| Month CDD |
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68 |
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71 |
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49 |
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+19 |
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148 |
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in |
1961 |
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7 |
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in |
1975 |
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| Year CDD |
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751 |
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837 |
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586 |
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+165 |
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837 |
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in |
2020 |
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280 |
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in |
1902 |
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| Maximum Dew Point |
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71 |
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61 |
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63 |
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+8 |
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73 |
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in |
1999 |
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43 |
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in |
1966 |
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| Minimum
Dew Point |
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62 |
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49 |
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53 |
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+9 |
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68 |
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in |
2005 |
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32 |
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in |
1984 |
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| Average Dew Point |
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67 |
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55 |
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58 |
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+9 |
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70 |
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in |
2005 |
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39 |
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in |
1984 |
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| Month Avg Max Dew Point |
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67.2 |
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66.0 |
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64.3 |
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+2.9 |
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69.6 |
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in |
1961 |
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55.2 |
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in |
1967 |
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| Month Avg
Min Dew Point |
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57.8 |
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54.6 |
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54.9 |
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+2.8 |
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61.2 |
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in |
1961 |
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44.3 |
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in |
1967 |
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| Month Average Dew Point |
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62.7 |
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60.5 |
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59.6 |
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+3.1 |
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65.4 |
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in |
1961 |
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49.7 |
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in |
1967 |
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| Precipitation |
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.89 |
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.00 |
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.14 |
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+.75 |
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6.20 |
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in |
1932 |
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| One Hour |
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.79 |
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.00 |
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.79 |
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in |
2021 |
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| Hourly Rate |
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8.35 |
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.00 |
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8.35 |
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in |
2021 |
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| Month Precipitation |
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8.49 |
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.66 |
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1.91 |
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+6.58 |
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8.49 |
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in |
2021 |
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T |
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in |
1983 |
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| Year Precipitation |
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37.59 |
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24.69 |
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31.19 |
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+6.40 |
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46.35 |
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in |
1998 |
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17.49 |
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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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September
16, 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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98% |
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92% |
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93% |
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+5% |
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100% |
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in |
2017 |
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81% |
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in |
2011 |
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| Minimum
Humidity |
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82% |
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60% |
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58% |
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+24% |
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95% |
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in |
2004 |
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34% |
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in |
1984 |
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| Average Humidity |
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90% |
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76% |
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76% |
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+14% |
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98% |
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in |
2004 |
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59% |
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in |
1984 |
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| Maximum Barometer |
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30.30 |
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30.29 |
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30.15 |
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+00.15 |
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30.54 |
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in |
1988 |
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29.72 |
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in |
1953 |
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| Minimum
Barometer |
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30.06 |
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30.12 |
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29.93 |
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+00.13 |
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30.27 |
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in |
2016 |
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29.20 |
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in |
1999 |
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| Average Barometer |
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30.18 |
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30.21 |
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30.04 |
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+00.14 |
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30.36 |
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in |
1988 |
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29.63 |
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in |
1999 |
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| Average Wind |
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5.9 |
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7.0 |
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5.8 |
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+0.1 |
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17.3 |
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in |
1999 |
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1.3 |
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in |
2006 |
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| Direction |
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ENE |
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SW |
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NE |
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ENE |
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N |
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| High Wind Gust |
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24 |
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25 |
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21 |
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+3 |
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45 |
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in |
1999 |
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11 |
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in |
2006 |
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| Direction |
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NNE |
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SW |
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SW |
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SE |
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WNW |
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| Maximum Water Temp |
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71.6 |
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68.0 |
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68.4 |
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+3.2 |
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71.6 |
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in |
2021 |
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65.8 |
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in |
2007 |
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| Minimum
Water Temp |
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69.8 |
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66.7 |
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66.7 |
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+3.1 |
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70.2 |
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in |
1999 |
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64.2 |
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in |
2001 |
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| Average Water Temp |
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70.7 |
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67.4 |
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67.6 |
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+3.1 |
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70.7 |
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in |
2021 |
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65.1 |
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in |
2007 |
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| Sunrise/ AM Twilight |
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6:25:41 AM |
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5:59:21 AM |
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| Sunset /
PM Twilight |
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6:54:11 PM |
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7:20:32 PM |
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| Length Of Day |
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12:28:30 |
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| Special Conditions |
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Fog, Strong Thunderstorm |
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| Comments |
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| Hour-by-Hour Weather For September 16, 2021 |
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| Climate Weather for September 16 |
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| Weather History For September 16 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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