Portsmouth Rhode Island Weather Almanac
Saturday, December 7, 2019
Partly Cloudy early then Clear, Windy and Colder
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    December 7, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   36   38   45   -9   67   in 1998   26   in 1954  
Minimum Temperature   26   25   31   -5   51   in 1932   11   in 1906  
Average Temperature   31   32   38   -7   58   in 1998   21   in 1954  
Precipitation   .00   T   .15   -.15   2.10   in 1908        
One Hour   .00   .00           .61   in 1996            
Snow   0.0   T   0.2   -.15   1.7   in 1922            
Snow Depth   T   0           17   in 1981            
HDD   34   33   27   +7   44   in 1954   7   in 1998  
CDD   0   0   0   +0   0   in              
Maximum Dew Point   28   32   37   -9   59   in 1953   11   in 1958  
Minimum Dew Point   15   11   22   -7   46   in 2011   -4   in 1989  
Average  Dew Point   22   22   29   -7   51   in 2011   8   in 1958  
Maximum Humidity   75%   89%   85%   -10%   100%   in 2004   53%   in 1958  
Minimum Humidity   47%   34%   54%   -7%   95%   in 2011   28%   in 1988  
Average Humidity   61%   62%   70%   -9%   97%   in 2004   46%   in 1995  
Maximum Barometer   30.47   30.39   30.12   +00.35   30.66   in 1935   29.45   in 1962  
Minimum Barometer   30.05   30.12   29.79   +00.26   30.26   in 1950   29.05   in 1959  
Average Barometer   30.26   30.26   29.95   +00.31   30.41   in 1950   29.28   in 1959  
Average Wind   11.4   11.4   8.5   +2.9   24.4   in 1983   0.6   in 2012  
Direction   NNW   WNW   W       W         SSW        
High Wind Gust   28   28   27   +1   68   in 1953   7   in 1990  
Direction   WNW   NW   W       SSW         WNW        
Wind Chill   18   14   22   -4             -1   in 1989  
Maximum Water Temp   43.7   43.9   47.7   -4.0   53.8   in 2011   42.8   in 2007  
Minimum Water Temp   40.3   41.4   45.1   -4.8   52.7   in 2011   40.3   in 2019  
Average Water Temp   42.0   42.7   46.4   -4.4   53.3   in 2011   41.9   in 2007  
Sunrise/ AM Twilight   6:58:45 AM   6:27:43 AM            
Sunset / PM Twilight   4:15:24 PM   4:46:26 PM            
Length Of Day   9:16:39                          
Special Conditions   None                                  
Comments      
    December 7, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   39.9   45.3   45.9   -6.0   59.1   in 1998   32.6   in 1954  
Avg Minimum Temperature   27.6   31.1   32.1   -4.6   45.3   in 2001   14.9   in 1989  
Average Temperature   33.7   38.2   39.0   -5.3   52.1   in 2001   25.3   in 1926  
Total Precipitation   .79   1.15   1.05   -.26   4.15   in 1981   .00   in 2000  
Total Snow   4.2   T   1.3   +2.9   17.0   in 1981   0.0   in 2017  
Total HDD   217   185   181   +36   277   in 1926   87   in 2001  
Total CDD   0   0   0   +0   0   in     0   in    
Avg Maximum Dew Point   33.4   37.0   37.8   -4.3   51.4   in 1982   21.3   in 1976  
Avg Minimum Dew Point   18.9   22.3   23.0   -4.2   37.7   in 2001   -2.9   in 1989  
Average  Dew Point   26.1   29.6   30.4   -4.3   44.1   in 2001   10.6   in 1989  
    December 7, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   50.29   50.38   44.90   +5.39   61.79   in 1983   24.35   in 1957  
Total Snow (since Jul 1 19)   4.2   4.2   2.4   +1.8   19.5   in 1898   0.0   in 2017  
Total HDD (since Jul 1 19)   1207   1245   1213   -6   1568   in 1904   901   in 2011  
Total CDD (since Jan 1)   731   775   563   +168   807   in 2016   290   in 1902  
Hour-by-Hour Weather For December 7, 2019
Climate Weather for December 7
Weather History For December 7
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