| Portsmouth Rhode Island Weather Almanac |
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| Sunday,
September 19, 2021 |
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| Partly Cloudy
to Clear PM, Cooler |
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Climate
Normal Period |
Climate Record Period |
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1991 -
2020 |
1893 - 2021 |
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September 19, 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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73 |
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64 |
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71 |
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+2 |
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85 |
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in |
1946 |
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60 |
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in |
1987 |
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| Minimum
Temperature |
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57 |
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45 |
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56 |
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+1 |
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68 |
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in |
2016 |
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37 |
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in |
1956 |
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| Average Temperature |
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65 |
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55 |
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64 |
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+1 |
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75 |
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in |
1906 |
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50 |
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in |
1956 |
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| Month Avg Max Temperature |
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75.6 |
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75.5 |
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73.8 |
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+1.8 |
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81.1 |
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in |
1983 |
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68.7 |
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in |
1913 |
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| Month Avg
Min Temperature |
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61.7 |
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58.9 |
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58.9 |
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+2.7 |
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64.2 |
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in |
1915 |
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52.8 |
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in |
1984 |
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| Month Average Temperature |
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68.9 |
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67.5 |
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66.4 |
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+2.6 |
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72.3 |
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in |
1961 |
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61.7 |
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in |
1963 |
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| High Heat
Index |
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72 |
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59 |
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71 |
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+1 |
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86 |
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in |
1983 |
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| Low Wind Chill |
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33 |
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in |
1956 |
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| HDD |
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0 |
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10 |
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3 |
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-3 |
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15 |
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in |
1956 |
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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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26 |
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29 |
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-28 |
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90 |
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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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26 |
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36 |
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-26 |
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102 |
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in |
1956 |
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0 |
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in |
2015 |
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| CDD |
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0 |
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0 |
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2 |
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-2 |
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10 |
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in |
1906 |
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0 |
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in |
2021 |
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| Month CDD |
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76 |
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74 |
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55 |
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+21 |
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153 |
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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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759 |
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840 |
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592 |
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+167 |
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840 |
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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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67 |
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40 |
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62 |
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+5 |
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72 |
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in |
1991 |
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40 |
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in |
2020 |
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| Minimum Dew
Point |
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51 |
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30 |
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52 |
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-1 |
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66 |
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in |
2016 |
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26 |
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in |
1979 |
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| Average Dew Point |
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59 |
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35 |
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57 |
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+2 |
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69 |
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in |
2016 |
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35 |
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in |
2020 |
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| Month Avg Max Dew Point |
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67.3 |
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64.4 |
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63.9 |
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+3.4 |
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69.1 |
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in |
2018 |
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55.0 |
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in |
1984 |
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| Month Avg
Min Dew Point |
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57.8 |
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52.6 |
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54.5 |
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+3.4 |
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60.9 |
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in |
2018 |
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44.2 |
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in |
1984 |
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| Month Average Dew Point |
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62.8 |
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58.7 |
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59.2 |
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+3.6 |
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65.3 |
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in |
2018 |
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49.6 |
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in |
1984 |
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| Precipitation |
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.00 |
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.00 |
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.13 |
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-.13 |
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1.84 |
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in |
1972 |
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| One Hour |
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.00 |
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.00 |
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.71 |
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in |
2006 |
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| Hourly Rate |
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.00 |
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.00 |
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3.79 |
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in |
2016 |
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| Month Precipitation |
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8.56 |
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.66 |
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2.32 |
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+6.24 |
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8.56 |
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in |
2021 |
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.06 |
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in |
1946 |
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| Year Precipitation |
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37.66 |
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24.69 |
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31.60 |
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+6.06 |
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46.35 |
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in |
1998 |
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17.53 |
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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
19, 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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97% |
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70% |
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93% |
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+4% |
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100% |
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in |
2018 |
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70% |
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in |
2020 |
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| Minimum
Humidity |
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48% |
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29% |
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59% |
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-11% |
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96% |
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in |
1989 |
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29% |
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in |
2020 |
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| Average Humidity |
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73% |
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50% |
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76% |
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-4% |
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98% |
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in |
1989 |
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50% |
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in |
2020 |
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| Maximum Barometer |
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30.25 |
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30.38 |
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30.16 |
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+00.09 |
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30.58 |
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in |
1939 |
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29.81 |
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in |
1976 |
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| Minimum
Barometer |
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29.99 |
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30.09 |
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29.93 |
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+00.06 |
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30.36 |
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in |
2008 |
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29.30 |
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in |
1981 |
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| Average Barometer |
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30.12 |
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30.24 |
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30.05 |
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+00.07 |
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30.43 |
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in |
2008 |
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29.60 |
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in |
1981 |
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| Average Wind |
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6.4 |
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7.5 |
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6.1 |
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+0.3 |
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14.7 |
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in |
1987 |
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2.2 |
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in |
2005 |
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| Direction |
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NNE |
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NNE |
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NNE |
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NNE |
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SSW |
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| High Wind Gust |
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24 |
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28 |
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21 |
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+3 |
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43 |
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in |
1936 |
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12 |
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in |
1999 |
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| Direction |
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NNE |
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NNE |
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NNE |
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E |
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SE |
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| Maximum Water Temp |
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70.9 |
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66.7 |
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68.0 |
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+2.9 |
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71.1 |
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in |
2015 |
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64.6 |
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in |
1996 |
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| Minimum
Water Temp |
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69.6 |
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64.8 |
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65.9 |
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+3.7 |
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69.6 |
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in |
2021 |
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62.6 |
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in |
1996 |
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| Average Water Temp |
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70.3 |
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65.8 |
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66.9 |
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+3.3 |
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70.3 |
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in |
2021 |
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63.6 |
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in |
1996 |
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| Sunrise/ AM Twilight |
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6:28:44 AM |
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6:02:28 AM |
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| Sunset / PM
Twilight |
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6:49:00 PM |
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7:15:16 PM |
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| Length Of Day |
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12:20:16 |
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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 September 19, 2021 |
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| Climate Weather for September 19 |
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| Weather History For September 19 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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