| Portsmouth Rhode Island
Weather Almanac |
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| Saturday, December 29, 2018 |
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| Cloudy and Dense Fog early then Partly Cloudy, Windy,
Continued 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 - 2018 |
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December 29, 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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54 |
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17 |
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39 |
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+15 |
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58 |
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in |
1984 |
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14 |
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in |
1917 |
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| Minimum
Temperature |
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34 |
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7 |
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24 |
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+10 |
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47 |
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in |
1984 |
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-8 |
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in |
1917 |
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| Average Temperature |
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44 |
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12 |
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32 |
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+12 |
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53 |
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in |
1984 |
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3 |
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in |
1917 |
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| Precipitation |
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.00 |
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.00 |
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.13 |
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-.13 |
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1.89 |
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in |
1901 |
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| One Hour |
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.00 |
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.00 |
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.35 |
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in |
2013 |
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| Snow |
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0.0 |
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0.0 |
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0.3 |
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-0.3 |
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8.3 |
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in |
1945 |
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| Snow
Depth |
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0 |
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0 |
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15 |
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in |
1947 |
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| HDD |
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21 |
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53 |
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33 |
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-12 |
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62 |
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in |
1917 |
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12 |
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in |
1984 |
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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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53 |
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2 |
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30 |
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+23 |
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53 |
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in |
2018 |
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2 |
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in |
2017 |
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| Minimum
Dew Point |
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25 |
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-3 |
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14 |
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+11 |
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45 |
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in |
1984 |
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-9 |
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in |
1993 |
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| Average Dew Point |
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39 |
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-1 |
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22 |
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+17 |
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48 |
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in |
2005 |
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-1 |
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in |
2017 |
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| Maximum Humidity |
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100% |
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66% |
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86% |
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+14% |
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100% |
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in |
2018 |
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54% |
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in |
1952 |
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| Minimum
Humidity |
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57% |
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46% |
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57% |
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+0% |
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95% |
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in |
1990 |
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17% |
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in |
1994 |
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| Average Humidity |
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79% |
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56% |
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71% |
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+7% |
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98% |
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in |
1990 |
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39% |
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in |
1949 |
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| Maximum Barometer |
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30.15 |
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30.34 |
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30.14 |
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+00.01 |
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30.82 |
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in |
1933 |
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29.49 |
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in |
1976 |
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| Minimum
Barometer |
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29.77 |
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30.15 |
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29.74 |
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+00.03 |
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30.43 |
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in |
2006 |
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28.86 |
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in |
1956 |
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| Average Barometer |
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29.96 |
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30.25 |
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29.94 |
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+00.02 |
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30.57 |
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in |
2006 |
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29.34 |
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in |
1976 |
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| Average Wind |
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10.8 |
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8.4 |
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8.1 |
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+2.7 |
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17.9 |
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in |
2009 |
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1.5 |
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in |
1992 |
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| Direction |
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WNW |
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WNW |
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WNW |
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NW |
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NNE |
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| High Wind Gust |
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28 |
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24 |
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26 |
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+2 |
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47 |
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in |
2009 |
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7 |
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in |
1992 |
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| Direction |
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WNW |
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WNW |
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WNW |
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NW |
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NW |
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| High Heat Index |
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| Wind Chill |
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27 |
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-6 |
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16 |
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+11 |
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-9 |
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in |
1987 |
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| Maximum Water Temp |
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43.3 |
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40.0 |
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43.7 |
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-0.4 |
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49.0 |
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in |
2006 |
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39.0 |
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in |
2010 |
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| Minimum
Water Temp |
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41.9 |
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34.3 |
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41.0 |
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+0.9 |
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46.6 |
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in |
2015 |
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34.3 |
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in |
2017 |
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| Average Water Temp |
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42.6 |
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37.2 |
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42.4 |
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+0.2 |
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47.4 |
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in |
2015 |
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37.2 |
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in |
2017 |
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| Sunrise/ AM Twilight |
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7:11:15 AM |
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6:40:03 AM |
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| Sunset /
PM Twilight |
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4:24:08 PM |
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4:55:20 PM |
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| Length Of Day |
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9:12:53 |
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| Special Conditions |
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Dense Fog |
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| Comments |
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December 29, 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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43.3 |
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39.5 |
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42.3 |
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+1.0 |
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54.3 |
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in |
2015 |
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30.3 |
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in |
1989 |
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| Avg
Minimum Temperature |
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30.4 |
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27.6 |
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28.4 |
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+2.0 |
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41.9 |
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in |
2015 |
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14.1 |
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in |
1989 |
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| Average Temperature |
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36.9 |
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33.6 |
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35.3 |
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+1.5 |
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48.1 |
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in |
2015 |
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22.2 |
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in |
1989 |
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| Total
Precipitation |
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3.85 |
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2.25 |
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4.09 |
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-.24 |
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9.28 |
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in |
1936 |
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.58 |
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in |
1955 |
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| Total Snow |
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0.2 |
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6.3 |
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7.0 |
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-6.8 |
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21.7 |
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in |
1981 |
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T |
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in |
2011 |
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| Total
HDD |
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809 |
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905 |
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853 |
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-44 |
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1234 |
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in |
1989 |
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480 |
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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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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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36.0 |
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31.1 |
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34.2 |
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+1.8 |
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49.6 |
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in |
2015 |
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15.2 |
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in |
1989 |
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| Avg
Minimum Dew Point |
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20.9 |
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17.4 |
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17.6 |
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+3.4 |
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36.3 |
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in |
2015 |
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-1.2 |
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in |
1989 |
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| Average Dew Point |
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28.5 |
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24.2 |
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25.4 |
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+3.0 |
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42.9 |
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in |
2015 |
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7.0 |
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in |
1989 |
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December 29, 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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53.08 |
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41.36 |
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47.94 |
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+5.14 |
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65.49 |
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in |
1983 |
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27.66 |
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in |
1965 |
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| Total
Snow (since Jul 1 18) |
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4.4 |
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6.3 |
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8.1 |
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-3.7 |
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22.9 |
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in |
1904 |
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T |
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in |
1999 |
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| Total HDD (since Jul 1
18) |
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1869 |
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1702 |
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1885 |
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-16 |
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2412 |
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in |
1904 |
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1275 |
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in |
2015 |
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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 29, 2018 |
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| Climate Weather for December 29 |
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| Weather History For December 29 |
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| Weather Calendar |
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