| Portsmouth Rhode Island
Weather Almanac |
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| Saturday, December 8, 2018 |
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| Clear, Windy, Dry and Very Cold |
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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 - 2018 |
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December 8, 2018 |
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Record |
Record |
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| Observed Daily Data |
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Observed |
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2017 |
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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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31 |
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40 |
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44 |
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-13 |
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62 |
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in |
1951 |
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16 |
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in |
1906 |
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| Minimum
Temperature |
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21 |
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35 |
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31 |
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-10 |
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49 |
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in |
1974 |
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4 |
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in |
1906 |
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| Average Temperature |
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26 |
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38 |
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38 |
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-12 |
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54 |
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in |
1951 |
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10 |
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in |
1906 |
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| Precipitation |
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.00 |
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.00 |
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.15 |
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-.15 |
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1.01 |
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in |
1950 |
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| One Hour |
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.00 |
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.00 |
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.32 |
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in |
1996 |
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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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2.3 |
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in |
2000 |
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| Snow
Depth |
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0 |
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0 |
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14 |
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in |
1981 |
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| HDD |
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39 |
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27 |
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28 |
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+11 |
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55 |
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in |
1906 |
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11 |
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in |
1951 |
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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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| Maximum Dew Point |
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18 |
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26 |
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36 |
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-18 |
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59 |
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in |
1951 |
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-2 |
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in |
1989 |
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| Minimum
Dew Point |
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4 |
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20 |
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21 |
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-17 |
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46 |
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in |
1974 |
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-6 |
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in |
1989 |
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| Average Dew Point |
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11 |
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23 |
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29 |
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-18 |
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49 |
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in |
1974 |
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-4 |
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in |
1989 |
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| Maximum Humidity |
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69% |
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66% |
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82% |
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-13% |
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100% |
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in |
2012 |
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43% |
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in |
1989 |
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| Minimum
Humidity |
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31% |
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45% |
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53% |
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-22% |
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93% |
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in |
2012 |
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24% |
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in |
1979 |
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| Average Humidity |
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50% |
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56% |
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67% |
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-17% |
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97% |
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in |
2012 |
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37% |
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in |
1989 |
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| Maximum Barometer |
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30.50 |
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30.09 |
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30.20 |
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+00.30 |
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30.69 |
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in |
2014 |
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29.46 |
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in |
1981 |
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| Minimum
Barometer |
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30.18 |
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29.95 |
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29.87 |
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+00.31 |
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30.42 |
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in |
2013 |
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29.20 |
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in |
2011 |
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| Average Barometer |
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30.34 |
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30.02 |
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30.04 |
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+00.30 |
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30.55 |
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in |
2014 |
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29.40 |
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in |
1981 |
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| Average Wind |
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10.4 |
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5.9 |
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7.7 |
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+2.7 |
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16.8 |
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in |
1961 |
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1.3 |
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in |
1967 |
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| Direction |
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NW |
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W |
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NW |
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NW |
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SSE |
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| High Wind Gust |
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26 |
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18 |
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25 |
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+1 |
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54 |
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in |
1979 |
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10 |
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in |
1967 |
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| Direction |
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NW |
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W |
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NW |
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WNW |
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E |
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| High Heat Index |
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| Wind Chill |
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10 |
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28 |
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20 |
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-10 |
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1 |
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in |
2008 |
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| Maximum Water Temp |
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45.5 |
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48.1 |
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47.4 |
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-1.9 |
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53.5 |
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in |
2011 |
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43.0 |
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in |
2007 |
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| Minimum
Water Temp |
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39.7 |
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46.3 |
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44.5 |
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-4.8 |
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51.1 |
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in |
2011 |
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39.4 |
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in |
2000 |
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| Average Water Temp |
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42.6 |
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47.2 |
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45.9 |
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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 |
2008 |
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| Sunrise/ AM Twilight |
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6:59:38 AM |
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6:28:33 AM |
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| Sunset /
PM Twilight |
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4:15:24 PM |
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4:46:28 PM |
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| Length Of Day |
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9:15:46 |
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| Special Conditions |
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None |
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| Comments |
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December 8, 2018 |
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Record |
Record |
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| Month-to-Date Summary |
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Observed |
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2017 |
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Normal |
Depart |
Highest |
Lowest |
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| Avg Maximum Temperature |
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43.5 |
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48.8 |
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45.6 |
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-2.1 |
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57.9 |
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in |
1998 |
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32.9 |
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in |
1954 |
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| Avg
Minimum Temperature |
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29.9 |
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35.5 |
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32.0 |
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-2.1 |
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44.3 |
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in |
1998 |
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15.0 |
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in |
1989 |
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| Average Temperature |
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36.7 |
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42.1 |
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38.9 |
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-2.2 |
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51.1 |
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in |
1998 |
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25.4 |
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in |
1989 |
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| Total
Precipitation |
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1.15 |
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.55 |
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1.20 |
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-.05 |
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4.37 |
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in |
1996 |
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.00 |
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in |
1988 |
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| Total Snow |
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T |
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0.0 |
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1.5 |
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-1.5 |
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17.0 |
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in |
1981 |
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0.0 |
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in |
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| Total
HDD |
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224 |
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181 |
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209 |
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+15 |
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315 |
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in |
1989 |
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110 |
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in |
1998 |
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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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807 |
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in |
2016 |
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290 |
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in |
1902 |
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| Avg Maximum Dew Point |
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34.6 |
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40.0 |
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37.6 |
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-2.9 |
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49.1 |
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in |
1982 |
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20.9 |
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in |
1989 |
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| Avg
Minimum Dew Point |
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20.0 |
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26.8 |
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20.3 |
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-0.3 |
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36.3 |
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in |
2001 |
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-3.3 |
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in |
1989 |
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| Average Dew Point |
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27.3 |
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33.4 |
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27.9 |
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-0.5 |
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42.4 |
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in |
2001 |
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8.8 |
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in |
1989 |
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December 8, 2018 |
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Record |
Record |
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| Year-to-Date Summary |
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Observed |
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2017 |
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Normal |
Depart |
Highest |
Lowest |
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| Total Precipitation |
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50.38 |
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39.66 |
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45.05 |
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+5.33 |
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61.79 |
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in |
1983 |
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24.39 |
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in |
1957 |
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| Total
Snow (since Jul 1 18) |
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4.2 |
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0.0 |
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2.6 |
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+1.6 |
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19.5 |
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in |
1898 |
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0.0 |
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in |
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| Total HDD (since Jul 1
18) |
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1284 |
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978 |
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1241 |
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+43 |
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1603 |
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in |
1904 |
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924 |
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in |
2011 |
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| Total
CDD (since Jan 1) |
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775 |
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580 |
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563 |
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+212 |
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807 |
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in |
2016 |
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290 |
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in |
1902 |
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| Hour-by-Hour Weather For December 8, 2018 |
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| Climate Weather for December 8 |
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| Weather History For December 8 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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