| Portsmouth Rhode Island
Weather Almanac |
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| Saturday, December 12, 2020 |
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| Partly Cloudy early then Moderate/Heavy Rain and Fog, Light
Winds and Very Warm |
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| Climate
Normal Period |
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Climate Record Period |
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| 1981- 2010 |
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1893 - 2020 |
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December
12, 2020 |
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Record |
Record |
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| Observed Daily Data |
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Observed |
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2019 |
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Normal |
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Depart |
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Highest |
Lowest |
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| Maximum Temperature |
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57 |
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31 |
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43 |
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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 |
1905 |
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| Minimum
Temperature |
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44 |
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24 |
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29 |
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+15 |
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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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51 |
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28 |
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36 |
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+15 |
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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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| Precipitation |
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.77 |
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.00 |
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.14 |
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+.63 |
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1.46 |
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in |
2008 |
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| One
Hour |
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.26 |
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.00 |
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.42 |
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in |
2008 |
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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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| Snow
Depth |
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0 |
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4 |
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8 |
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in |
1981 |
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| HDD |
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14 |
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37 |
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28 |
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-14 |
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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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| 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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0 |
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in |
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| Maximum Dew Point |
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56 |
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24 |
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35 |
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+21 |
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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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44 |
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15 |
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20 |
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+24 |
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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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50 |
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20 |
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27 |
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+23 |
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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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| Maximum Humidity |
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100% |
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86% |
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89% |
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+11% |
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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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90% |
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56% |
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58% |
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+32% |
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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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95% |
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71% |
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73% |
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+22% |
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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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30.22 |
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30.72 |
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30.17 |
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+00.05 |
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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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29.96 |
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30.38 |
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29.83 |
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+00.13 |
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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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30.09 |
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30.55 |
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30.00 |
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+00.09 |
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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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4.6 |
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8.6 |
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8.0 |
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-3.4 |
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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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ESE |
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NW |
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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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22 |
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25 |
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25 |
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-3 |
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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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WSW |
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NW |
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W |
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N |
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WNW |
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| High Heat Index |
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| Wind Chill |
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44 |
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12 |
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20 |
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+24 |
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-12 |
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in |
1988 |
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| Maximum Water Temp |
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50.2 |
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42.2 |
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46.9 |
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+3.3 |
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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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47.3 |
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39.9 |
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44.4 |
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+2.9 |
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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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48.8 |
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41.1 |
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45.6 |
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+3.1 |
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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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7:03:18 AM |
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6:32:05 AM |
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| Sunset /
PM Twilight |
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4:15:53 PM |
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4:47:07 PM |
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| Length Of Day |
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9:12:35 |
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| Special Conditions |
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Dense Fog |
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| Comments |
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December
12, 2020 |
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|
Record |
Record |
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| Month-to-Date Summary |
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Observed |
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2019 |
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Normal |
Depart |
Highest |
Lowest |
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| Avg Maximum Temperature |
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46.5 |
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42.8 |
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44.9 |
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+1.6 |
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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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| Avg
Minimum Temperature |
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34.2 |
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29.2 |
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31.3 |
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+2.9 |
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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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| Average Temperature |
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40.6 |
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36.3 |
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38.1 |
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+2.5 |
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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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| Total
Precipitation |
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3.30 |
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3.24 |
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1.79 |
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+1.51 |
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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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| Total Snow |
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T |
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8.0 |
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2.3 |
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-2.3 |
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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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| Total
HDD |
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293 |
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345 |
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320 |
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-27 |
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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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| Total 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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| Avg Maximum Dew Point |
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39.3 |
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37.3 |
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36.8 |
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+2.5 |
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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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| Avg
Minimum Dew Point |
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27.4 |
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21.9 |
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21.9 |
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+5.5 |
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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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| Average Dew Point |
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33.6 |
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30.0 |
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29.4 |
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+4.2 |
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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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December 12, 2020 |
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Record |
Record |
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| Year-to-Date Summary |
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Observed |
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2019 |
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Normal |
Depart |
Highest |
Lowest |
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| Total Precipitation |
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40.18 |
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52.74 |
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45.77 |
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-5.59 |
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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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| Total
Snow (since Jul 1 20) |
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0.6 |
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8.0 |
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3.4 |
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-2.8 |
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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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| Total HDD (since Jul 1
20) |
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1086 |
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1335 |
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1352 |
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-266 |
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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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| Total
CDD (since Jan 1) |
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871 |
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731 |
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563 |
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+308 |
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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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| Hour-by-Hour Weather For December 12, 2020 |
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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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