| Portsmouth Rhode Island
Weather Almanac |
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| Monday, December 10, 2018 |
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| Clear, Continued Dry and 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 10, 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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39 |
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39 |
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44 |
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-5 |
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62 |
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in |
1946 |
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17 |
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in |
1904 |
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| Minimum
Temperature |
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26 |
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32 |
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30 |
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-4 |
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48 |
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in |
2015 |
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4 |
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in |
1902 |
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| Average Temperature |
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33 |
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36 |
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37 |
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-4 |
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55 |
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in |
1946 |
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14 |
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in |
1904 |
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| Precipitation |
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.00 |
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T |
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.15 |
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-.15 |
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2.78 |
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in |
1936 |
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| One Hour |
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.00 |
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.00 |
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.44 |
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in |
2012 |
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| Snow |
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0.0 |
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T |
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0.2 |
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-0.2 |
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2.9 |
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in |
1905 |
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| Snow
Depth |
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0 |
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1 |
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12 |
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in |
1981 |
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| HDD |
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32 |
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29 |
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28 |
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+4 |
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51 |
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in |
1904 |
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10 |
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in |
1946 |
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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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21 |
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31 |
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36 |
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-15 |
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59 |
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in |
2012 |
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-6 |
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in |
1968 |
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| Minimum
Dew Point |
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16 |
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24 |
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21 |
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-5 |
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47 |
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in |
2015 |
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-11 |
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in |
1968 |
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| Average Dew Point |
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19 |
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28 |
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28 |
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-9 |
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51 |
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in |
2015 |
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-9 |
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in |
1968 |
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| Maximum Humidity |
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72% |
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92% |
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86% |
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-14% |
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100% |
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in |
2015 |
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47% |
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in |
1968 |
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| Minimum
Humidity |
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45% |
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60% |
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59% |
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-14% |
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96% |
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in |
1966 |
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24% |
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in |
1968 |
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| Average Humidity |
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59% |
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76% |
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72% |
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-14% |
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98% |
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in |
1966 |
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36% |
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in |
1968 |
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| Maximum Barometer |
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30.18 |
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29.99 |
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30.14 |
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+00.04 |
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30.55 |
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in |
1964 |
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29.48 |
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in |
1981 |
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| Minimum
Barometer |
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30.06 |
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29.60 |
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29.83 |
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+00.23 |
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30.36 |
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in |
1949 |
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29.08 |
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in |
1903 |
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| Average Barometer |
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30.12 |
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29.80 |
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29.98 |
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+00.14 |
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30.46 |
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in |
1949 |
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29.39 |
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in |
1981 |
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| Average Wind |
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7.7 |
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8.3 |
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7.5 |
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+0.2 |
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22.9 |
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in |
1977 |
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0.9 |
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in |
1997 |
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| Direction |
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N |
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W |
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WNW |
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WNW |
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WNW |
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| High Wind Gust |
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21 |
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21 |
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24 |
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-3 |
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49 |
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in |
1905 |
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10 |
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in |
1997 |
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| Direction |
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NNW |
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WNW |
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WNW |
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NW |
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N |
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| High Heat Index |
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| Wind Chill |
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19 |
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24 |
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21 |
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-2 |
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-9 |
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in |
1968 |
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| Maximum Water Temp |
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44.6 |
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47.1 |
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46.9 |
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-2.3 |
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52.8 |
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in |
2011 |
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41.9 |
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in |
2010 |
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| Minimum
Water Temp |
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38.5 |
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45.4 |
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44.3 |
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-5.8 |
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50.1 |
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in |
2011 |
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37.7 |
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in |
2010 |
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| Average Water Temp |
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41.6 |
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46.3 |
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45.6 |
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-4.1 |
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51.5 |
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in |
2011 |
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39.8 |
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in |
2010 |
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| Sunrise/ AM Twilight |
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7:01:19 AM |
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6:30:11 AM |
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| Sunset /
PM Twilight |
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4:15:31 PM |
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4:46:40 PM |
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| Length Of Day |
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9:14:12 |
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| Special Conditions |
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None |
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| Comments |
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December 10, 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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42.1 |
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46.6 |
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45.3 |
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-3.2 |
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55.6 |
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in |
1953 |
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31.4 |
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in |
1904 |
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| Avg
Minimum Temperature |
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28.6 |
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34.8 |
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31.6 |
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-3.0 |
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42.1 |
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in |
1998 |
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14.9 |
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in |
1989 |
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| Average Temperature |
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35.4 |
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40.7 |
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38.5 |
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-3.2 |
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48.8 |
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in |
1998 |
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24.8 |
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in |
1989 |
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| Total
Precipitation |
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1.15 |
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.85 |
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1.50 |
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-.35 |
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4.50 |
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in |
1936 |
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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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1.4 |
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1.9 |
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-1.9 |
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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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293 |
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240 |
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264 |
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+29 |
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400 |
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in |
1989 |
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160 |
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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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32.2 |
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38.2 |
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37.2 |
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-5.0 |
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47.3 |
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in |
2001 |
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18.8 |
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in |
1989 |
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| Avg
Minimum Dew Point |
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19.2 |
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26.0 |
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20.2 |
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-1.0 |
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35.4 |
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in |
2015 |
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-3.3 |
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in |
1989 |
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| Average Dew Point |
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25.7 |
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32.1 |
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27.8 |
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-2.1 |
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41.0 |
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in |
2001 |
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7.8 |
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in |
1989 |
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December 10, 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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45.35 |
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+5.03 |
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61.88 |
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in |
1983 |
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26.25 |
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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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3.0 |
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+1.2 |
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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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1353 |
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1037 |
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1296 |
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+57 |
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1697 |
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in |
1904 |
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971 |
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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 10, 2018 |
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| Climate Weather for December 10 |
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| Weather History For December 10 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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