| Portsmouth Rhode Island Weather Almanac |
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| Friday,
December 17, 2021 |
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| Partly
Cloudy early then Clear 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 17, 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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59 |
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33 |
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43 |
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+16 |
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59 |
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in |
2021 |
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18 |
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in |
1932 |
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| Minimum
Temperature |
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43 |
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23 |
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30 |
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+13 |
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44 |
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in |
1996 |
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-1 |
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in |
1942 |
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| Average Temperature |
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51 |
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28 |
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36 |
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+15 |
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51 |
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in |
2021 |
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10 |
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in |
1919 |
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| Month Avg Max Temperature |
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50.5 |
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44.5 |
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44.8 |
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+5.7 |
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54.6 |
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in |
2015 |
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30.5 |
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in |
1904 |
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| Month Avg
Min Temperature |
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36.4 |
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32.6 |
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31.7 |
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+4.6 |
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42.0 |
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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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43.6 |
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38.8 |
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38.1 |
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+5.5 |
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48.6 |
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in |
2015 |
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24.8 |
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in |
1904 |
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| High Heat Index |
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| Low Wind Chill |
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40 |
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9 |
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17 |
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+23 |
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-12 |
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in |
1942 |
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| Heating Degree Days |
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14 |
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37 |
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29 |
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-15 |
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55 |
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in |
1919 |
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14 |
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in |
2021 |
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| Month HDD |
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363 |
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446 |
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456 |
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-93 |
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683 |
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in |
1904 |
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279 |
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in |
2015 |
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| Season HDD |
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1157 |
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1239 |
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1446 |
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-289 |
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1995 |
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in |
1904 |
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1074 |
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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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51 |
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32 |
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36 |
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+15 |
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58 |
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in |
1973 |
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2 |
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in |
1951 |
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| Minimum
Dew Point |
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19 |
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19 |
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20 |
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-1 |
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43 |
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in |
1996 |
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-12 |
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in |
1979 |
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| Average Dew Point |
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35 |
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26 |
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28 |
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+7 |
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48 |
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in |
1996 |
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-2 |
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in |
1951 |
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| Month Avg Max Dew Point |
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43.1 |
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38.2 |
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36.0 |
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+7.1 |
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49.1 |
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in |
2015 |
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18.4 |
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in |
1989 |
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| Month Avg
Min Dew Point |
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23.9 |
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24.7 |
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20.9 |
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+3.0 |
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37.6 |
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in |
2015 |
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-0.8 |
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in |
1989 |
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| Month Average Dew Point |
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33.7 |
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31.6 |
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28.5 |
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+5.2 |
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43.5 |
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in |
2015 |
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8.8 |
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in |
1989 |
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| Precipitation |
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.00 |
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.68 |
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.15 |
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-.15 |
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3.13 |
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in |
1973 |
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| One Hour |
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.00 |
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.00 |
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.95 |
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in |
2000 |
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| Hourly Rate |
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.00 |
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.00 |
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.67 |
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in |
2015 |
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| Month Precipitation |
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.71 |
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4.23 |
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2.56 |
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-1.85 |
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7.74 |
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in |
1936 |
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.27 |
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in |
1998 |
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| Year Precipitation |
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46.29 |
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41.11 |
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43.99 |
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+2.30 |
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63.81 |
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in |
1983 |
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27.14 |
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in |
1965 |
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| Snow |
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0.0 |
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6.1 |
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0.2 |
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-0.2 |
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6.1 |
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in |
2020 |
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in |
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| Snow Depth |
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0 |
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1 |
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12 |
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in |
1904 |
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in |
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| Month Snow |
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0.2 |
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7.4 |
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3.0 |
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-2.8 |
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20.6 |
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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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8.0 |
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3.6 |
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-3.4 |
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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
17, 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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92% |
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98% |
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86% |
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+6% |
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100% |
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in |
2016 |
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60% |
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in |
2009 |
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| Minimum
Humidity |
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22% |
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85% |
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56% |
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-34% |
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94% |
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in |
1996 |
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22% |
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in |
2021 |
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| Average Humidity |
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57% |
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92% |
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71% |
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-14% |
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97% |
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in |
1996 |
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50% |
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in |
1953 |
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| Maximum Barometer |
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30.15 |
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30.10 |
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30.13 |
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+00.02 |
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30.68 |
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in |
1899 |
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29.64 |
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in |
1976 |
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| Minimum
Barometer |
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29.80 |
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29.74 |
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29.77 |
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+00.03 |
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30.32 |
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in |
1949 |
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28.93 |
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in |
1970 |
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| Average Barometer |
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29.98 |
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29.92 |
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29.95 |
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+00.03 |
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30.42 |
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in |
1949 |
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29.39 |
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in |
1973 |
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| Average Wind |
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8.5 |
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14.5 |
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8.5 |
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+0.0 |
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19.7 |
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in |
2000 |
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1.2 |
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in |
1962 |
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| Direction |
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WNW |
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NNW |
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WNW |
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SSE |
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NNE |
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| High Wind Gust |
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30 |
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42 |
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26 |
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+4 |
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53 |
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in |
2000 |
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10 |
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in |
1962 |
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| Direction |
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WSW |
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NNW |
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WNW |
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WSW |
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NNW |
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| Maximum Water Temp |
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49.8 |
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46.8 |
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45.8 |
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+4.0 |
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52.3 |
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in |
2011 |
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41.3 |
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in |
2013 |
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| Minimum
Water Temp |
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49.3 |
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44.1 |
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43.3 |
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+6.0 |
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49.6 |
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in |
2015 |
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38.4 |
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in |
2010 |
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| Average Water Temp |
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49.6 |
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45.5 |
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44.6 |
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+5.0 |
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50.5 |
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in |
2011 |
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40.2 |
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in |
2013 |
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| Sunrise/ AM Twilight |
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7:04:32 AM |
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6:34:48 AM |
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| Sunset /
PM Twilight |
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4:18:34 PM |
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4:48:18 PM |
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| Length Of Day |
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9:14:02 |
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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 17, 2021 |
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| Climate Weather for December 17 |
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| Weather History For December 17 |
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| Weather Calendar |
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| Back
To Weather Stat Page |
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