| Portsmouth Rhode Island Weather Almanac |
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| Friday,
December 31, 2021 |
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| Cloudy,
Light Rain Early & Late, Foggy, Light Winds and Continued Very Warm |
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Climate
Normal Period |
Climate Record Period |
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1991 -
2020 |
1893 - 2021 |
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December 31, 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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48 |
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49 |
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40 |
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+8 |
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57 |
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in |
1936 |
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9 |
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in |
1962 |
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| Minimum
Temperature |
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41 |
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34 |
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27 |
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+14 |
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42 |
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in |
1965 |
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-5 |
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in |
1917 |
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| Average Temperature |
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45 |
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42 |
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33 |
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+12 |
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48 |
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in |
1936 |
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3 |
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in |
1962 |
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| Month Avg Max Temperature |
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46.2 |
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43.5 |
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43.2 |
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+3.0 |
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54.0 |
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in |
2015 |
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30.8 |
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in |
1989 |
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| Month Avg
Min Temperature |
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34.1 |
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30.8 |
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30.0 |
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+4.1 |
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41.4 |
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in |
2015 |
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14.6 |
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in |
1989 |
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| Month Average
Temperature |
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40.4 |
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37.4 |
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36.5 |
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+3.9 |
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48.0 |
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in |
2015 |
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22.9 |
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in |
1989 |
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| High Heat Index |
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| Low Wind Chill |
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41 |
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30 |
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14 |
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+27 |
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-26 |
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in |
1962 |
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| Heating Degree Days |
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20 |
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23 |
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32 |
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-12 |
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62 |
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in |
1962 |
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17 |
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in |
1936 |
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| Month HDD |
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762 |
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855 |
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880 |
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-118 |
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1304 |
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in |
1989 |
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527 |
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in |
2015 |
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| Season HDD |
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1556 |
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1648 |
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1870 |
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-314 |
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2476 |
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in |
1904 |
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1322 |
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in |
2015 |
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| Cooling Degree Days |
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0 |
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0 |
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0 |
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+0 |
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in |
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in |
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| Month CDD |
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0 |
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0 |
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0 |
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+0 |
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0 |
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in |
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in |
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| Year Cooling Degree Days |
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795 |
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871 |
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609 |
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+186 |
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871 |
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in |
2020 |
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290 |
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in |
1902 |
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| Maximum Dew Point |
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48 |
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48 |
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33 |
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+15 |
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51 |
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in |
1990 |
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-5 |
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in |
1962 |
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| Minimum
Dew Point |
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41 |
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26 |
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17 |
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+24 |
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41 |
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in |
2021 |
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-18 |
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in |
1962 |
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| Average Dew Point |
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45 |
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37 |
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25 |
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+20 |
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45 |
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in |
2021 |
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-12 |
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in |
1962 |
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| Month Avg Max Dew Point |
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40.4 |
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37.4 |
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33.9 |
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+6.5 |
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49.3 |
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in |
2015 |
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16.6 |
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in |
1989 |
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| Month Avg
Min Dew Point |
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23.4 |
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22.8 |
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18.4 |
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+5.0 |
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35.9 |
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in |
2015 |
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0.1 |
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in |
1989 |
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| Month Average Dew Point |
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32.1 |
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30.4 |
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26.2 |
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+5.9 |
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42.8 |
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in |
2015 |
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8.3 |
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in |
1989 |
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| Precipitation |
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.05 |
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.31 |
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.13 |
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-.08 |
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1.37 |
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in |
1906 |
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| One Hour |
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.02 |
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.09 |
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.18 |
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in |
1989 |
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| Hourly Rate |
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.15 |
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.31 |
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.64 |
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in |
2018 |
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| Month Precipitation |
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1.74 |
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6.39 |
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4.53 |
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-2.79 |
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9.94 |
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in |
1936 |
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.58 |
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in |
1955 |
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| Year Precipitation |
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47.32 |
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43.27 |
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45.96 |
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+1.36 |
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65.49 |
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in |
1983 |
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27.66 |
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in |
1965 |
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| Snow |
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0.0 |
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0.0 |
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0.3 |
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-0.3 |
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5.1 |
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in |
2008 |
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in |
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| Snow Depth |
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0 |
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0 |
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15 |
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in |
1947 |
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in |
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| Month Snow |
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0.8 |
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7.4 |
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6.5 |
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-5.7 |
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23.5 |
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in |
2009 |
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T |
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in |
2011 |
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| Season Snow |
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0.8 |
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8.0 |
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7.1 |
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-6.3 |
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23.7 |
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in |
1904 |
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T |
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in |
1999 |
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December
31, 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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100% |
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96% |
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85% |
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+15% |
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100% |
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in |
2021 |
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57% |
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in |
1955 |
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| Minimum
Humidity |
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97% |
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65% |
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55% |
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+42% |
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97% |
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in |
2021 |
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22% |
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in |
1991 |
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| Average Humidity |
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99% |
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81% |
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70% |
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+29% |
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99% |
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in |
2021 |
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41% |
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in |
1991 |
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| Maximum Barometer |
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29.99 |
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30.36 |
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30.18 |
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-00.19 |
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30.76 |
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in |
1991 |
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29.59 |
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in |
1976 |
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| Minimum
Barometer |
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29.93 |
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29.94 |
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29.89 |
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+00.04 |
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30.59 |
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in |
1963 |
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28.94 |
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in |
1948 |
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| Average Barometer |
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29.96 |
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30.15 |
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30.03 |
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-00.07 |
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30.67 |
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in |
1963 |
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29.47 |
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in |
1962 |
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| Average Wind |
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2.2 |
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8.9 |
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7.5 |
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-5.3 |
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23.9 |
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in |
1962 |
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1.3 |
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in |
1963 |
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| Direction |
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SE |
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NW |
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NW |
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NW |
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NW |
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| High Wind Gust |
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11 |
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30 |
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24 |
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-13 |
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57 |
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in |
1901 |
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10 |
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in |
1967 |
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| Direction |
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S |
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SW |
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WNW |
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NW |
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NW |
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| Maximum Water Temp |
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48.4 |
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45.0 |
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43.1 |
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+5.3 |
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49.2 |
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in |
2011 |
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38.1 |
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in |
2000 |
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| Minimum
Water Temp |
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46.9 |
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42.3 |
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40.6 |
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+6.3 |
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47.4 |
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in |
2015 |
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34.5 |
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in |
2017 |
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| Average Water Temp |
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47.7 |
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43.7 |
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41.9 |
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+5.8 |
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47.7 |
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in |
2021 |
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36.5 |
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in |
2017 |
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| Sunrise/ AM Twilight |
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7:11:36 AM |
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6:42:00 AM |
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| Sunset /
PM Twilight |
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4:25:01 PM |
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4:54:38 PM |
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| Length Of Day |
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9:13:25 |
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| Special Conditions |
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Dense Fog |
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| Comments |
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8th consecutive day of measurable rain |
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| Hour-by-Hour Weather For December 31, 2021 |
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| Climate Weather for December 31 |
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| Weather History For December 31 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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