| Portsmouth Rhode Island Weather Almanac |
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| Monday,
September 27, 2021 |
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| Clear early
then Partly Cloudy, Breezy and Warm |
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Climate
Normal Period |
Climate Record Period |
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1991 -
2020 |
1893 - 2021 |
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September 27, 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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75 |
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76 |
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69 |
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+6 |
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82 |
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in |
2014 |
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54 |
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in |
1893 |
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| Minimum
Temperature |
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53 |
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65 |
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54 |
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-1 |
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66 |
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in |
2007 |
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36 |
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in |
1957 |
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| Average Temperature |
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64 |
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71 |
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62 |
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+2 |
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72 |
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in |
2017 |
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48 |
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in |
1957 |
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| Month Avg Max Temperature |
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75.6 |
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74.7 |
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72.6 |
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+3.0 |
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78.7 |
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in |
1961 |
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67.6 |
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in |
1963 |
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| Month Avg
Min Temperature |
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61.0 |
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57.3 |
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57.9 |
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+3.1 |
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63.2 |
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in |
1961 |
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52.0 |
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in |
1956 |
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| Month Average Temperature |
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68.6 |
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66.3 |
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65.2 |
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+3.4 |
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71.1 |
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in |
1961 |
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60.3 |
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in |
1963 |
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| High Heat
Index |
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75 |
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78 |
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70 |
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+5 |
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85 |
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in |
2017 |
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| Low Wind Chill |
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32 |
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in |
1957 |
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| HDD |
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1 |
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0 |
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5 |
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-4 |
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17 |
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in |
1957 |
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0 |
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in |
2020 |
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| Month HDD |
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3 |
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56 |
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58 |
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-55 |
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156 |
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in |
1956 |
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3 |
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in |
2021 |
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| Season HDD |
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12 |
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56 |
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65 |
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-53 |
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187 |
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in |
1956 |
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10 |
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in |
1930 |
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| CDD |
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0 |
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6 |
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1 |
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-1 |
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7 |
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in |
2017 |
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0 |
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in |
2021 |
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| Month CDD |
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100 |
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90 |
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63 |
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+37 |
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180 |
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in |
1961 |
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7 |
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in |
1893 |
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| Year CDD |
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783 |
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856 |
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600 |
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+183 |
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856 |
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in |
2020 |
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285 |
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in |
1902 |
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| Maximum Dew Point |
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63 |
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70 |
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60 |
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+3 |
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76 |
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in |
2017 |
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29 |
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in |
1957 |
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| Minimum
Dew Point |
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50 |
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63 |
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50 |
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+0 |
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65 |
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in |
1993 |
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17 |
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in |
1957 |
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| Average Dew Point |
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57 |
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67 |
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55 |
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+2 |
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70 |
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in |
2017 |
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23 |
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in |
1957 |
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| Month Avg Max Dew Point |
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67.3 |
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61.9 |
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63.1 |
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+4.1 |
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67.7 |
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in |
2018 |
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55.0 |
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in |
1966 |
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| Month Avg
Min Dew Point |
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57.4 |
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50.5 |
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53.3 |
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+4.1 |
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58.5 |
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in |
1961 |
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44.4 |
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in |
1984 |
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| Month Average Dew Point |
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62.6 |
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56.4 |
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58.2 |
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+4.4 |
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63.3 |
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in |
2018 |
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50.1 |
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in |
1984 |
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| Precipitation |
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.00 |
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T |
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.14 |
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-.14 |
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1.49 |
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in |
1962 |
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| One Hour |
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.00 |
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T |
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.29 |
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in |
1998 |
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| Hourly Rate |
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.00 |
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.00 |
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2.22 |
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in |
2008 |
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| Month Precipitation |
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9.45 |
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.66 |
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3.38 |
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+6.07 |
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10.67 |
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in |
1961 |
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.31 |
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in |
1959 |
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| Year Precipitation |
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38.55 |
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24.69 |
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32.66 |
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+5.89 |
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48.49 |
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in |
1998 |
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17.64 |
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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
27, 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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89% |
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98% |
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93% |
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-4% |
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100% |
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in |
2017 |
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59% |
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in |
1957 |
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| Minimum
Humidity |
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59% |
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84% |
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61% |
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-2% |
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97% |
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in |
1993 |
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26% |
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in |
1957 |
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| Average Humidity |
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74% |
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91% |
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77% |
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-3% |
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99% |
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in |
1993 |
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43% |
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in |
1957 |
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| Maximum Barometer |
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29.96 |
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30.07 |
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30.13 |
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-00.17 |
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30.48 |
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in |
2015 |
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29.76 |
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in |
1977 |
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| Minimum
Barometer |
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29.84 |
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29.98 |
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29.89 |
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-00.05 |
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30.33 |
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in |
1996 |
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28.81 |
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in |
1985 |
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| Average Barometer |
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29.90 |
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30.03 |
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30.01 |
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-00.11 |
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30.40 |
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in |
2015 |
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29.54 |
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in |
1985 |
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| Average Wind |
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7.3 |
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4.6 |
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6.1 |
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+1.2 |
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23.8 |
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in |
1985 |
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1.0 |
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in |
1990 |
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| Direction |
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SW |
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S |
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SSW |
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S |
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ESE |
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| High Wind Gust |
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31 |
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16 |
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22 |
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+9 |
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77 |
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in |
1985 |
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9 |
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in |
2017 |
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| Direction |
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SW |
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SW |
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SW |
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S |
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SSE |
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| Maximum Water Temp |
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70.5 |
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67.5 |
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66.9 |
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+3.6 |
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70.5 |
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in |
2021 |
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63.0 |
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in |
1996 |
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| Minimum
Water Temp |
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69.4 |
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65.5 |
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65.1 |
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+4.3 |
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69.4 |
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in |
2021 |
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61.0 |
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in |
2000 |
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| Average Water Temp |
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70.0 |
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66.5 |
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66.0 |
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+3.9 |
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70.0 |
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in |
2021 |
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62.5 |
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in |
2000 |
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| Sunrise/ AM Twilight |
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6:36:58 AM |
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6:10:47 AM |
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| Sunset /
PM Twilight |
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6:35:12 PM |
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7:01:22 PM |
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| Length Of Day |
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11:58:14 |
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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 27, 2021 |
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| Climate Weather for September 27 |
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| Weather History For September 27 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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