Portsmouth Rhode Island Weather Almanac
Tuesday, December 10, 2019
Cloudy, Rainy and Fog, Breezy and Continued Very Warm
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    December 10, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   58   39   44   +14   62   in 1946   17   in 1904  
Minimum Temperature   42   26   30   +12   48   in 2015   4   in 1902  
Average Temperature   50   33   37   +13   55   in 1946   14   in 1904  
Precipitation   .25   .00   .15   +.10   2.78   in 1936        
One Hour   .06   .00           .44   in 2012            
Snow   0.0   0.0   0.2   -.15   2.9   in 1905            
Snow Depth   0   0           12   in 1981            
HDD   15   32   28   -13   51   in 1904   10   in 1946  
CDD   0   0   0   +0   0   in              
Maximum Dew Point   55   21   36   +20   59   in 2012   -6   in 1968  
Minimum Dew Point   40   16   21   +20   47   in 2015   -11   in 1968  
Average  Dew Point   48   19   28   +20   51   in 2015   -9   in 1968  
Maximum Humidity   96%   72%   86%   +10%   100%   in 2015   47%   in 1968  
Minimum Humidity   88%   45%   59%   +29%   96%   in 1966   24%   in 1968  
Average Humidity   92%   59%   72%   +20%   98%   in 1966   36%   in 1968  
Maximum Barometer   30.05   30.18   30.14   -00.09   30.55   in 1964   29.48   in 1981  
Minimum Barometer   29.75   30.06   29.83   -00.08   30.36   in 1949   29.08   in 1903  
Average Barometer   29.90   30.12   29.98   -00.08   30.46   in 1949   29.39   in 1981  
Average Wind   9.3   7.7   7.5   +1.8   22.9   in 1977   0.9   in 1997  
Direction   SSW   N   WNW       WNW         WNW        
High Wind Gust   29   21   24   +5   49   in 1905   10   in 1997  
Direction   SSW   NNW   WNW       NW         N        
Wind Chill   37   19   21   +16             -9   in 1968  
Maximum Water Temp   42.9   44.6   46.8   -3.9   52.8   in 2011   41.9   in 2010  
Minimum Water Temp   40.8   38.5   44.2   -3.4   50.1   in 2011   37.7   in 2010  
Average Water Temp   41.9   41.6   45.5   -3.6   51.5   in 2011   39.8   in 2010  
Sunrise/ AM Twilight   7:01:19 AM   6:30:11 AM            
Sunset / PM Twilight   4:15:31 PM   4:46:40 PM            
Length Of Day   9:14:12                          
Special Conditions   Fog                                  
Comments      
    December 10, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   44.0   42.1   45.3   -1.3   55.6   in 1953   31.4   in 1904  
Avg Minimum Temperature   29.8   28.6   31.6   -1.8   42.1   in 1998   14.9   in 1989  
Average Temperature   36.9   35.4   38.5   -1.6   48.8   in 1998   24.8   in 1989  
Total Precipitation   2.98   1.15   1.50   +1.48   4.50   in 1936   .00   in 1988  
Total Snow   4.2   T   1.9   +2.3   17.0   in 1981   0.0   in 2015  
Total HDD   278   293   264   +14   400   in 1989   160   in 1998  
Total CDD   0   0   0   +0   0   in     0   in    
Avg Maximum Dew Point   38.4   32.2   37.2   +1.2   47.3   in 2001   18.8   in 1989  
Avg Minimum Dew Point   22.5   19.2   22.4   +0.1   35.4   in 2015   -3.3   in 1989  
Average  Dew Point   30.5   25.7   29.8   +0.7   41.0   in 2001   7.8   in 1989  
    December 10, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   52.48   50.38   45.35   +7.13   61.88   in 1983   26.25   in 1965  
Total Snow (since Jul 1 19)   4.2   4.2   3.0   +1.2   19.5   in 1898   0.0   in 2015  
Total HDD (since Jul 1 19)   1268   1353   1296   -28   1697   in 1904   971   in 2011  
Total CDD (since Jan 1)   731   775   563   +168   807   in 2016   290   in 1902  
Hour-by-Hour Weather For December 10, 2019
Climate Weather for December 10
Weather History For December 10
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