| Portsmouth Rhode Island
Weather Almanac |
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| Sunday, December 9, 2018 |
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| Clear Morning, Partly Cloudy Day to Mostly Cloudy PM,
Continued Dry and Very Cold |
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| Climate
Normal Period |
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Climate Record Period |
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| 1981- 2010 |
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1893 - 2018 |
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December 9, 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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34 |
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37 |
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44 |
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-10 |
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65 |
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in |
1991 |
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12 |
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in |
1902 |
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| Minimum
Temperature |
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21 |
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32 |
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30 |
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-9 |
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47 |
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in |
1923 |
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-4 |
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in |
1902 |
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| Average Temperature |
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28 |
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35 |
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37 |
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-9 |
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55 |
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in |
1991 |
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4 |
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in |
1902 |
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| Precipitation |
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.00 |
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.30 |
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.15 |
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-.15 |
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1.82 |
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in |
1978 |
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| One Hour |
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.00 |
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.05 |
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.32 |
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in |
2009 |
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| Snow |
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0.0 |
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1.4 |
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0.2 |
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-0.2 |
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2.7 |
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in |
1958 |
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| Snow
Depth |
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0 |
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0 |
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13 |
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in |
1981 |
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| HDD |
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37 |
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30 |
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27 |
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+10 |
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61 |
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in |
1902 |
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10 |
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in |
1991 |
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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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24 |
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31 |
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36 |
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-12 |
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55 |
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in |
2014 |
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6 |
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in |
1989 |
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| Minimum
Dew Point |
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16 |
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22 |
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21 |
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-5 |
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43 |
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in |
1966 |
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-10 |
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in |
1968 |
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| Average Dew Point |
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20 |
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27 |
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28 |
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-8 |
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48 |
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in |
1966 |
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-1 |
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in |
1989 |
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| Maximum Humidity |
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81% |
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95% |
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88% |
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-7% |
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100% |
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in |
2013 |
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52% |
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in |
1989 |
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| Minimum
Humidity |
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54% |
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53% |
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57% |
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-3% |
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96% |
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in |
2014 |
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23% |
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in |
1989 |
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| Average Humidity |
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68% |
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74% |
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73% |
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-5% |
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98% |
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in |
2014 |
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38% |
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in |
1989 |
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| Maximum Barometer |
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30.50 |
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29.98 |
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30.21 |
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+00.29 |
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30.74 |
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in |
1936 |
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29.43 |
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in |
1981 |
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| Minimum
Barometer |
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30.12 |
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29.60 |
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29.86 |
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+00.26 |
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30.31 |
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in |
2007 |
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29.18 |
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in |
2009 |
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| Average Barometer |
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30.31 |
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29.79 |
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30.04 |
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+00.27 |
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30.44 |
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in |
2002 |
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29.36 |
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in |
1981 |
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| Average Wind |
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5.8 |
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6.5 |
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7.2 |
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-1.4 |
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13.5 |
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in |
1981 |
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0.7 |
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in |
1997 |
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| Direction |
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WNW |
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N |
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WNW |
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NW |
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NNW |
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| High Wind Gust |
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18 |
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22 |
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25 |
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-7 |
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62 |
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in |
2005 |
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7 |
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in |
1997 |
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| Direction |
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NW |
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N |
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WNW |
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NNW |
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NW |
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| High Heat Index |
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| Wind Chill |
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16 |
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23 |
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20 |
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-4 |
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-7 |
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in |
1976 |
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| Maximum Water Temp |
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44.6 |
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47.6 |
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47.2 |
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-2.6 |
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52.2 |
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in |
2011 |
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42.2 |
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in |
2010 |
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| Minimum
Water Temp |
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39.0 |
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45.9 |
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44.2 |
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-5.2 |
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50.1 |
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in |
2011 |
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38.9 |
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in |
2002 |
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| Average Water Temp |
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41.8 |
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46.8 |
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45.7 |
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-3.9 |
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51.2 |
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in |
2011 |
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41.0 |
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in |
2010 |
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| Sunrise/ AM Twilight |
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7:00:29 AM |
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6:29:23 AM |
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| Sunset /
PM Twilight |
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4:15:26 PM |
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4:46:33 PM |
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| Length Of Day |
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9:14:57 |
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| Special Conditions |
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None |
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| Comments |
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December 9, 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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42.4 |
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47.4 |
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45.4 |
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-3.0 |
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56.3 |
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in |
1998 |
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32.8 |
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in |
1910 |
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| Avg
Minimum Temperature |
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28.9 |
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35.1 |
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31.8 |
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-2.9 |
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43.3 |
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in |
1998 |
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14.8 |
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in |
1989 |
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| Average Temperature |
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35.7 |
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41.3 |
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38.7 |
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-3.0 |
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49.8 |
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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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1.35 |
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-.20 |
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4.37 |
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in |
1996 |
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.00 |
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in |
1988 |
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| Total Snow |
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T |
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1.4 |
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1.7 |
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-1.7 |
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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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261 |
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211 |
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236 |
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+25 |
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360 |
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in |
1989 |
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135 |
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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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33.4 |
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39.0 |
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37.4 |
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-3.9 |
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48.3 |
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in |
1982 |
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19.2 |
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in |
1989 |
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| Avg
Minimum Dew Point |
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19.6 |
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26.2 |
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20.1 |
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-0.6 |
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35.6 |
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in |
2001 |
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-3.8 |
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in |
1989 |
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| Average Dew Point |
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26.5 |
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32.6 |
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27.8 |
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-1.3 |
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41.4 |
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in |
2001 |
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7.7 |
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in |
1989 |
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December 9, 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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45.20 |
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+5.18 |
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61.79 |
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in |
1983 |
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25.40 |
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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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1.4 |
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2.8 |
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+1.4 |
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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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1321 |
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1008 |
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1268 |
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+53 |
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1646 |
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in |
1904 |
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947 |
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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 9, 2018 |
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| Climate Weather for December 9 |
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| Weather History For December 9 |
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| Weather Calendar |
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| Back To Weather Stat Page |
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