| Portsmouth Rhode Island
Weather Almanac |
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| Tuesday, December 11, 2018 |
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| Clear early, Partly Cloudy Day to Cloudy PM, Light Winds,
Continued Cold and Dry |
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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 11, 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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38 |
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40 |
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43 |
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-5 |
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65 |
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in |
1971 |
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19 |
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in |
1977 |
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| Minimum
Temperature |
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22 |
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30 |
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30 |
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-8 |
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47 |
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in |
2015 |
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8 |
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in |
1977 |
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| Average Temperature |
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30 |
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35 |
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36 |
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-6 |
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53 |
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in |
2015 |
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14 |
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in |
1977 |
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| Precipitation |
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T |
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.00 |
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.15 |
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.00 |
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2.79 |
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in |
1992 |
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| One Hour |
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.00 |
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.00 |
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.41 |
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in |
2008 |
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| Snow |
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T |
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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 |
1939 |
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| Snow
Depth |
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0 |
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T |
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10 |
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in |
1981 |
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| HDD |
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35 |
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30 |
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28 |
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+7 |
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51 |
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in |
1977 |
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12 |
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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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| Maximum Dew Point |
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27 |
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27 |
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35 |
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-8 |
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57 |
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in |
1966 |
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-4 |
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in |
1977 |
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| Minimum
Dew Point |
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13 |
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23 |
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20 |
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-7 |
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47 |
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in |
2015 |
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-15 |
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in |
1980 |
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| Average Dew Point |
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20 |
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25 |
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28 |
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-8 |
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52 |
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in |
2015 |
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-9 |
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in |
1977 |
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| Maximum Humidity |
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77% |
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76% |
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86% |
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-9% |
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100% |
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in |
2015 |
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45% |
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in |
1990 |
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| Minimum
Humidity |
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48% |
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54% |
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55% |
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-7% |
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92% |
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in |
2008 |
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20% |
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in |
1980 |
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| Average Humidity |
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63% |
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65% |
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71% |
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-8% |
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94% |
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in |
2015 |
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35% |
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in |
1990 |
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| Maximum Barometer |
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30.20 |
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30.04 |
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30.15 |
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+00.05 |
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30.78 |
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in |
1983 |
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29.42 |
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in |
2004 |
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| Minimum
Barometer |
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29.89 |
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29.96 |
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29.82 |
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+00.07 |
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30.46 |
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in |
2011 |
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29.18 |
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in |
1969 |
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| Average Barometer |
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30.05 |
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30.00 |
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29.99 |
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+00.06 |
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30.61 |
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in |
1983 |
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29.35 |
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in |
1957 |
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| Average Wind |
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4.6 |
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5.8 |
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8.2 |
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-3.6 |
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21.9 |
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in |
1952 |
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2.1 |
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in |
1996 |
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| Direction |
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N |
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W |
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N |
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SE |
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ENE |
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| High Wind Gust |
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14 |
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19 |
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26 |
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-12 |
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64 |
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in |
1943 |
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13 |
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in |
2006 |
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| Direction |
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N |
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W |
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N |
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NW |
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W |
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| High Heat Index |
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| Wind Chill |
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14 |
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27 |
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20 |
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-6 |
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-13 |
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in |
1977 |
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| Maximum Water Temp |
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44.1 |
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46.5 |
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47.0 |
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-2.9 |
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51.2 |
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in |
2011 |
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42.7 |
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in |
2010 |
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| Minimum
Water Temp |
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39.2 |
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44.5 |
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44.5 |
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-5.3 |
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50.4 |
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in |
2015 |
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39.1 |
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in |
2002 |
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| Average Water Temp |
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41.7 |
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45.5 |
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45.8 |
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-4.1 |
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50.6 |
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in |
2015 |
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41.2 |
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in |
2010 |
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| Sunrise/ AM Twilight |
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7:02:08 AM |
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6:30:57 AM |
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| Sunset /
PM Twilight |
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4:15:38 PM |
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4:46:49 PM |
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| Length Of Day |
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9:13:30 |
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| Special Conditions |
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None |
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| Comments |
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December 11, 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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41.7 |
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46.0 |
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45.1 |
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-3.4 |
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55.0 |
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in |
1953 |
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30.5 |
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in |
1904 |
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| Avg
Minimum Temperature |
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28.0 |
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34.4 |
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31.5 |
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-3.5 |
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41.4 |
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in |
1998 |
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16.0 |
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in |
1989 |
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| Average Temperature |
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34.9 |
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40.2 |
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38.3 |
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-3.4 |
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48.0 |
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in |
1998 |
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25.3 |
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in |
1904 |
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| Total
Precipitation |
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1.15 |
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.85 |
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1.65 |
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-.50 |
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5.89 |
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in |
1936 |
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.00 |
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in |
1946 |
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| Total Snow |
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T |
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1.4 |
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2.1 |
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-2.1 |
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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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328 |
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270 |
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292 |
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+36 |
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434 |
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in |
1904 |
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185 |
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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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31.7 |
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37.2 |
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37.0 |
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-5.3 |
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47.4 |
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in |
2001 |
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19.1 |
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in |
1989 |
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| Avg
Minimum Dew Point |
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18.6 |
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25.7 |
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20.0 |
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-1.4 |
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36.5 |
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in |
2015 |
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-1.8 |
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in |
1989 |
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| Average Dew Point |
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25.2 |
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31.5 |
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27.6 |
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-2.4 |
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41.8 |
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in |
2015 |
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8.6 |
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in |
1989 |
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December 11, 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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39.96 |
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45.50 |
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+4.88 |
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61.88 |
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in |
1983 |
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26.29 |
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in |
1965 |
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| Total
Snow (since Jul 1 18) |
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4.2 |
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1.4 |
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3.2 |
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+1.0 |
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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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1388 |
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1067 |
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1324 |
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+64 |
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1746 |
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in |
1904 |
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996 |
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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 11, 2018 |
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| Climate Weather for December 11 |
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| Weather History For December 11 |
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| Weather Calendar |
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