| Portsmouth Rhode Island Weather Almanac |
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| Sunday,
December 12, 2021 |
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| Mostly
Cloudy, Light Rain & Fog early, Partly Cloudy Day to Clear PM, Wind and
Continued Warm |
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Climate
Normal Period |
Climate Record Period |
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1991 -
2020 |
1893 - 2021 |
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December 12, 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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58 |
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57 |
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44 |
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+14 |
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62 |
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in |
2015 |
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17 |
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in |
1895 |
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| Minimum
Temperature |
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38 |
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44 |
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31 |
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+7 |
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49 |
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in |
2015 |
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3 |
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in |
1988 |
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| Average Temperature |
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48 |
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51 |
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37 |
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+11 |
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56 |
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in |
2015 |
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12 |
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in |
1988 |
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| Month Avg Max Temperature |
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49.2 |
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46.5 |
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45.3 |
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+3.8 |
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54.6 |
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in |
1953 |
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30.8 |
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in |
1904 |
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| Month Avg
Min Temperature |
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34.6 |
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34.2 |
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32.3 |
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+2.3 |
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40.7 |
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in |
2015 |
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16.4 |
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in |
1989 |
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| Month Average Temperature |
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42.1 |
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40.6 |
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38.8 |
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+3.3 |
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47.5 |
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in |
2015 |
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25.5 |
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in |
1904 |
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| High Heat Index |
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| Low Wind Chill |
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34 |
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44 |
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20 |
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+14 |
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-12 |
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in |
1988 |
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| Heating Degree Days |
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17 |
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14 |
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27 |
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-10 |
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53 |
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in |
1988 |
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9 |
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in |
2015 |
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| Month HDD |
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275 |
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293 |
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314 |
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-39 |
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474 |
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in |
1904 |
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210 |
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in |
2015 |
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| Season HDD |
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1069 |
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1086 |
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1304 |
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-235 |
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1786 |
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in |
1904 |
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1005 |
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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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56 |
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56 |
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37 |
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+19 |
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59 |
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in |
2008 |
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2 |
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in |
1988 |
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| Minimum
Dew Point |
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22 |
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44 |
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22 |
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+0 |
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44 |
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in |
2020 |
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-15 |
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in |
1988 |
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| Average Dew Point |
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39 |
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50 |
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29 |
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+10 |
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50 |
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in |
2020 |
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-7 |
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in |
1988 |
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| Month Avg Max Dew Point |
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42.8 |
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39.3 |
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36.8 |
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+5.9 |
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47.4 |
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in |
2015 |
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19.6 |
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in |
1989 |
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| Month Avg
Min Dew Point |
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24.1 |
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27.4 |
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21.9 |
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+2.1 |
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36.8 |
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in |
2015 |
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-0.5 |
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in |
1989 |
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| Month Average Dew Point |
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33.7 |
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33.6 |
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29.4 |
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+4.3 |
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42.3 |
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in |
2015 |
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9.5 |
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in |
1989 |
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| Precipitation |
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.04 |
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.77 |
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.15 |
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-.11 |
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1.46 |
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in |
2008 |
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| One Hour |
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.03 |
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.26 |
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.42 |
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in |
2008 |
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| Hourly Rate |
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.12 |
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.50 |
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1.90 |
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in |
2008 |
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| Month Precipitation |
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.68 |
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3.30 |
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1.81 |
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-1.13 |
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6.47 |
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in |
1936 |
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T |
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in |
1988 |
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| Year Precipitation |
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46.26 |
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40.18 |
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43.24 |
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+3.02 |
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62.00 |
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in |
1983 |
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26.39 |
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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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0.2 |
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-0.2 |
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6.1 |
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in |
1960 |
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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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8 |
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in |
1981 |
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in |
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| Month Snow |
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0.2 |
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T |
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2.0 |
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-1.8 |
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17.0 |
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in |
1981 |
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0.0 |
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in |
2015 |
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| Season Snow |
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0.2 |
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0.6 |
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2.6 |
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-2.4 |
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20.5 |
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in |
1898 |
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0.0 |
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in |
2015 |
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December
12, 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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96% |
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100% |
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89% |
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+7% |
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100% |
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in |
2020 |
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50% |
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in |
1975 |
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| Minimum
Humidity |
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42% |
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90% |
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58% |
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-16% |
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95% |
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in |
1949 |
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28% |
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in |
1977 |
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| Average Humidity |
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69% |
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95% |
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74% |
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-5% |
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98% |
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in |
1949 |
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40% |
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in |
1975 |
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| Maximum Barometer |
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30.19 |
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30.22 |
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30.17 |
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+00.02 |
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30.72 |
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in |
2019 |
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29.47 |
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in |
1951 |
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| Minimum
Barometer |
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29.54 |
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29.96 |
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29.82 |
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-00.28 |
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30.50 |
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in |
2006 |
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28.95 |
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in |
1944 |
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| Average Barometer |
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29.87 |
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30.09 |
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29.99 |
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-00.13 |
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30.57 |
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in |
2006 |
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29.40 |
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in |
1951 |
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| Average Wind |
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10.6 |
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4.6 |
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8.0 |
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+2.6 |
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24.4 |
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in |
1960 |
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1.0 |
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in |
1997 |
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| Direction |
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WNW |
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ESE |
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WNW |
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N |
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WNW |
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| High Wind Gust |
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34 |
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22 |
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25 |
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+9 |
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59 |
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in |
1960 |
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6 |
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in |
1997 |
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| Direction |
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WNW |
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WSW |
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W |
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N |
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WNW |
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| Maximum Water Temp |
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50.7 |
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50.2 |
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47.1 |
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+3.6 |
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52.3 |
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in |
2011 |
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42.2 |
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in |
2019 |
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| Minimum
Water Temp |
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48.9 |
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47.3 |
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44.6 |
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+4.3 |
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50.4 |
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in |
2015 |
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39.9 |
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in |
2019 |
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| Average Water Temp |
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49.8 |
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48.8 |
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45.8 |
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+4.0 |
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50.7 |
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in |
2015 |
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41.1 |
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in |
2019 |
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| Sunrise/ AM Twilight |
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7:01:01 AM |
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6:31:22 AM |
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| Sunset /
PM Twilight |
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4:17:16 PM |
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4:46:55 PM |
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| Length Of Day |
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9:16:15 |
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| Special Conditions |
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Fog |
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| Comments |
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| Hour-by-Hour Weather For December 12, 2021 |
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| Climate Weather for December 12 |
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| Weather History For December 12 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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