| Portsmouth Rhode Island
Weather Almanac |
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| Tuesday, December 4, 2018 |
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| Partly Cloudy Morning then Clear, Windy, Dry and Colder |
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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 4, 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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45 |
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48 |
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46 |
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-1 |
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68 |
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in |
1998 |
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20 |
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in |
1906 |
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| Minimum
Temperature |
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28 |
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35 |
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32 |
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-4 |
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53 |
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in |
1950 |
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5 |
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in |
1940 |
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| Average Temperature |
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37 |
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42 |
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39 |
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-2 |
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59 |
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in |
1998 |
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13 |
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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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2.40 |
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in |
1990 |
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| One Hour |
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.00 |
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.00 |
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.39 |
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in |
1990 |
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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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3.3 |
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in |
1901 |
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| Snow
Depth |
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0 |
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0 |
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4 |
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in |
1898 |
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| HDD |
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28 |
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23 |
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26 |
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+2 |
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52 |
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in |
1906 |
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6 |
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in |
1998 |
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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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35 |
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37 |
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38 |
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-3 |
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58 |
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in |
1990 |
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1 |
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in |
1989 |
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| Minimum
Dew Point |
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13 |
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30 |
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23 |
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-10 |
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50 |
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in |
1950 |
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-11 |
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in |
1989 |
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| Average Dew Point |
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24 |
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34 |
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30 |
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-6 |
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54 |
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in |
1950 |
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-5 |
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in |
1989 |
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| Maximum Humidity |
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71% |
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89% |
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85% |
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-14% |
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100% |
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in |
2001 |
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42% |
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in |
1980 |
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| Minimum
Humidity |
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41% |
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61% |
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54% |
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-13% |
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91% |
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in |
1955 |
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24% |
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in |
2000 |
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| Average Humidity |
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56% |
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75% |
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69% |
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-13% |
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93% |
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in |
1964 |
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33% |
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in |
1980 |
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| Maximum Barometer |
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30.07 |
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30.49 |
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30.15 |
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-00.08 |
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30.72 |
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in |
1966 |
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29.63 |
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in |
2007 |
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| Minimum
Barometer |
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29.66 |
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30.30 |
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29.82 |
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-00.16 |
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30.55 |
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in |
1966 |
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29.01 |
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in |
1978 |
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| Average Barometer |
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29.87 |
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30.40 |
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29.99 |
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-00.12 |
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30.64 |
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in |
1966 |
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29.47 |
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in |
1970 |
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| Average Wind |
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13.2 |
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3.7 |
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8.0 |
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+5.2 |
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19.4 |
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in |
1980 |
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1.8 |
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in |
1994 |
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| Direction |
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NW |
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NNE |
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WNW |
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NW |
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SSW |
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| High Wind Gust |
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32 |
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11 |
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25 |
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+7 |
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58 |
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in |
1900 |
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11 |
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in |
2017 |
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| Direction |
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NW |
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NE |
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WNW |
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E |
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NE |
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| High Heat Index |
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| Wind Chill |
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19 |
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32 |
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23 |
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-4 |
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-11 |
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in |
1989 |
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| Maximum Water Temp |
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46.2 |
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50.1 |
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48.3 |
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-2.1 |
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52.6 |
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in |
2009 |
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43.5 |
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in |
2000 |
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| Minimum
Water Temp |
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43.0 |
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49.0 |
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45.9 |
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-2.9 |
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51.0 |
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in |
2009 |
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39.4 |
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in |
2002 |
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| Average Water Temp |
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44.6 |
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49.6 |
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47.1 |
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-2.5 |
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51.8 |
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in |
2009 |
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41.9 |
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in |
2002 |
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| Sunrise/ AM Twilight |
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6:55:57 AM |
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6:25:03 AM |
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| Sunset /
PM Twilight |
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4:15:38 PM |
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4:46:32 PM |
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| Length Of Day |
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9:19:41 |
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| Special Conditions |
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None |
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| Comments |
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December 4, 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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50.5 |
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47.3 |
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46.5 |
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+4.0 |
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59.5 |
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in |
1998 |
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29.3 |
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in |
1896 |
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| Avg
Minimum Temperature |
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35.8 |
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34.8 |
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32.8 |
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+3.0 |
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44.8 |
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in |
1998 |
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13.3 |
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in |
1989 |
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| Average Temperature |
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43.1 |
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41.0 |
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39.5 |
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+3.6 |
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52.1 |
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in |
1998 |
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23.1 |
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in |
1896 |
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| Total
Precipitation |
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1.15 |
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.04 |
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.60 |
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+.55 |
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3.13 |
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in |
1893 |
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.00 |
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in |
2011 |
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| Total Snow |
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0.0 |
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0.0 |
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0.7 |
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-0.7 |
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3.9 |
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in |
1907 |
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0.0 |
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in |
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| Total
HDD |
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86 |
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95 |
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101 |
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-15 |
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167 |
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in |
1976 |
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50 |
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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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45.3 |
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39.0 |
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38.5 |
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+6.8 |
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51.0 |
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in |
1982 |
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13.8 |
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in |
1976 |
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| Avg
Minimum Dew Point |
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28.0 |
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29.3 |
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20.3 |
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+7.7 |
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39.0 |
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in |
1982 |
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-3.8 |
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in |
1989 |
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| Average Dew Point |
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36.6 |
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34.1 |
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28.0 |
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+8.6 |
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45.0 |
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in |
1982 |
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6.0 |
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in |
1976 |
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December 4, 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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39.15 |
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44.45 |
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+5.93 |
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61.39 |
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in |
1983 |
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24.18 |
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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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1.8 |
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+2.4 |
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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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1146 |
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892 |
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1133 |
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+13 |
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1459 |
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in |
1904 |
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862 |
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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 4, 2018 |
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| Climate Weather for December 4 |
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| Weather History For December 4 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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