| Portsmouth Rhode Island Weather Almanac |
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| Monday,
December 13, 2021 |
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| Clear early,
Partly Cloudy Day to Clear PM, Warm |
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Climate
Normal Period |
Climate Record Period |
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1991 -
2020 |
1893 - 2021 |
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December 13, 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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50 |
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59 |
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44 |
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+6 |
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60 |
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in |
1983 |
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17 |
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in |
1960 |
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| Minimum
Temperature |
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39 |
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42 |
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31 |
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+8 |
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49 |
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in |
2015 |
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6 |
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in |
1893 |
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| Average Temperature |
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45 |
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51 |
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37 |
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+8 |
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55 |
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in |
1983 |
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13 |
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in |
1960 |
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| Month Avg Max Temperature |
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49.2 |
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47.5 |
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45.2 |
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+4.0 |
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54.2 |
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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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34.9 |
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34.8 |
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32.2 |
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+2.7 |
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41.3 |
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in |
2015 |
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16.5 |
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in |
1989 |
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| Month Average Temperature |
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42.3 |
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41.4 |
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38.6 |
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+3.7 |
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47.9 |
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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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39 |
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19 |
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+15 |
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-11 |
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in |
1960 |
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| Heating Degree Days |
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20 |
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14 |
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28 |
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-8 |
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52 |
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in |
1960 |
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10 |
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in |
1983 |
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| Month HDD |
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295 |
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307 |
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342 |
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-47 |
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513 |
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in |
1904 |
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222 |
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in |
2015 |
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| Season HDD |
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1089 |
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1100 |
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1332 |
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-243 |
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1825 |
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in |
1904 |
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1017 |
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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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36 |
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53 |
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37 |
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-1 |
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58 |
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in |
1983 |
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-1 |
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in |
1960 |
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| Minimum
Dew Point |
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23 |
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35 |
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22 |
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+1 |
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45 |
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in |
1983 |
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-16 |
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in |
1976 |
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| Average Dew Point |
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30 |
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44 |
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29 |
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+1 |
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52 |
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in |
1983 |
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-6 |
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in |
1960 |
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| Month Avg Max Dew Point |
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42.2 |
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40.4 |
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36.7 |
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+5.6 |
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47.6 |
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in |
2015 |
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19.2 |
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in |
1989 |
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| Month Avg
Min Dew Point |
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24.0 |
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24.2 |
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21.7 |
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+2.3 |
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37.2 |
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in |
2015 |
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-0.6 |
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in |
1989 |
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| Month Average Dew Point |
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33.4 |
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34.4 |
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29.2 |
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+4.2 |
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42.6 |
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in |
2015 |
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9.3 |
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in |
1989 |
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| Precipitation |
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.00 |
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.02 |
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.15 |
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-.15 |
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2.43 |
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in |
1915 |
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| One Hour |
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.00 |
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.01 |
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.27 |
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in |
1983 |
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| Hourly Rate |
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.00 |
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.00 |
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1.30 |
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in |
2009 |
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| Month Precipitation |
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.68 |
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3.32 |
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1.96 |
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-1.28 |
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6.64 |
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in |
1936 |
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.04 |
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in |
1911 |
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| Year Precipitation |
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46.26 |
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40.20 |
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43.39 |
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+2.87 |
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62.96 |
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in |
1983 |
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27.07 |
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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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5.4 |
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in |
2007 |
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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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9 |
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in |
1970 |
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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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2.2 |
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-2.0 |
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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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2.8 |
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-2.6 |
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21.1 |
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in |
1898 |
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0.0 |
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in |
2015 |
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December
13, 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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67% |
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100% |
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86% |
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-19% |
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100% |
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in |
2020 |
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57% |
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in |
1989 |
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| Minimum
Humidity |
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50% |
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75% |
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56% |
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-6% |
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90% |
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in |
1965 |
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27% |
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in |
1989 |
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| Average Humidity |
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59% |
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88% |
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71% |
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-12% |
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95% |
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in |
1965 |
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42% |
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in |
1989 |
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| Maximum Barometer |
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30.22 |
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29.98 |
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30.18 |
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+00.04 |
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30.82 |
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in |
1975 |
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29.24 |
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in |
2010 |
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| Minimum
Barometer |
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30.12 |
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29.88 |
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29.85 |
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+00.27 |
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30.53 |
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in |
1994 |
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29.06 |
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in |
2010 |
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| Average Barometer |
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30.17 |
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29.93 |
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30.01 |
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+00.16 |
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30.65 |
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in |
1975 |
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29.15 |
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in |
2010 |
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| Average Wind |
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6.1 |
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6.3 |
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8.0 |
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-1.9 |
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21.4 |
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in |
1976 |
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1.7 |
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in |
1954 |
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| Direction |
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WSW |
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WSW |
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WSW |
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NW |
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NW |
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| High Wind Gust |
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20 |
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23 |
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25 |
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62 |
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in |
1976 |
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10 |
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in |
1954 |
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| Direction |
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SW |
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W |
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N |
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NW |
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NW |
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| Maximum Water Temp |
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48.9 |
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50.7 |
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46.6 |
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+2.3 |
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53.1 |
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in |
2011 |
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41.0 |
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in |
2018 |
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| Minimum
Water Temp |
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46.9 |
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49.3 |
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44.2 |
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+2.7 |
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50.5 |
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in |
2015 |
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39.2 |
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in |
2013 |
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| Average Water Temp |
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47.9 |
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50.0 |
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45.4 |
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+2.5 |
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50.8 |
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in |
2011 |
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40.2 |
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in |
2018 |
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| Sunrise/ AM Twilight |
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7:01:47 AM |
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6:32:07 AM |
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| Sunset /
PM Twilight |
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4:17:27 PM |
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4:47:07 PM |
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| Length Of Day |
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9:15:40 |
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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 December 13, 2021 |
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| Climate Weather for December 13 |
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| Weather History For December 13 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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