Portsmouth Rhode Island Weather Almanac
Wednesday, December 2, 2020
Partly Cloudy to Mostly Cloudy PM, Breezer and Much Cooler
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    December 2, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   46   42   47   -1   60   in 1982   23   in 1905  
Minimum Temperature   37   29   33   +4   47   in 1905   11   in 1989  
Average Temperature   42   36   40   +2   52   in 1982   20   in 1905  
Precipitation   .00   .19   .15   -.15   1.70   in 1981            
One Hour   .00   .04           .38   in 1981            
Snow   0.0   T   0.2   -0.2   3.4   in 1905            
Snow Depth   0   T           9   in 1898            
HDD   23   29   25   -2   45   in 1905   13   in 1982  
CDD   0   0   0   +0   0   in   0   in    
Maximum Dew Point   35   40   39   -4   59   in 1985   10   in 1971  
Minimum Dew Point   28   27   24   +4   42   in 2015   -5   in 2003  
Average  Dew Point   32   34   32   +1   50   in 2015   8   in 2003  
Maximum Humidity   75%   95%   84%   -9%   100%   in 2018   52%   in 1999  
Minimum Humidity   60%   90%   52%   +8%   96%   in 2015   27%   in 1995  
Average Humidity   68%   93%   68%   -1%   98%   in 2015   41%   in 1999  
Maximum Barometer   30.05   29.64   30.17   -00.12   30.77   in 1986   29.60   in 1969  
Minimum Barometer   29.79   29.38   29.86   -00.07   30.34   in 1973   28.97   in 1974  
Average Barometer   29.92   29.51   30.01   -00.09   30.49   in 2014   29.34   in 1985  
Average Wind   9.3   19.3   7.6   +1.7   19.3   in 2019   0.8   in 1961  
Direction   W   NNE   W       NNE         NNW        
High Wind Gust   30   37   25   +5   47   in 1946   8   in 1993  
Direction   W   NE   WNW       NW         ESE        
High Heat Index                                      
Wind Chill   30   16   22   +8             -6   in 1989  
Maximum Water Temp   53.1   44.2   48.9   +4.2   54.3   in 2006   44.2   in 2019  
Minimum Water Temp   49.3   41.5   46.6   +2.7   51.8   in 2001   41.5   in 2019  
Average Water Temp   51.2   42.9   47.7   +3.5   53.0   in 2006   42.9   in 2019  
Sunrise/ AM Twilight   6:54:30 AM   6:23:40 AM            
Sunset / PM Twilight   4:15:53 PM   4:46:42 PM            
Length Of Day   9:21:23                          
Special Conditions   None                                  
Comments      
    December 2, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   54.0   39.5   47.0   +7.0   61.0   in 2006   26.5   in 1896  
Avg Minimum Temperature   39.5   25.5   33.0   +6.5   47.0   in 2006   13.5   in 1989  
Average Temperature   47.0   33.0   40.0   +7.0   54.0   in 2006   23.5   in 1896  
Total Precipitation   .04   .55   .30   -.26   1.76   in 1981   .00   in 2011  
Total Snow   0.0   0.8   0.3   -0.3   3.4   in 1894   0.0   in 2020  
Total HDD   36   64   50   -14   83   in 1896   22   in 2006  
Total CDD   0   0   0   +0   0   in         in    
Avg Maximum Dew Point   48.0   36.5   39.2   +8.8   59.5   in 2006   15.5   in 1976  
Avg Minimum Dew Point   29.5   18.0   24.3   +5.3   38.0   in 2006   -2.5   in 1989  
Average  Dew Point   39.0   27.5   31.7   +7.3   48.8   in 2006   8.8   in 1964  
    December 2, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   36.92   50.05   44.28   -7.36   60.27   in 1983   24.15   in 1957  
Total Snow (since Jul 1 20)   0.6   0.8   1.4   -0.8   19.5   in 1898   0.0   in 2017  
Total HDD (since Jul 1 20)   829   1054   1082   -253   1376   in 1904   818   in 2011  
Total CDD (since Jan 1)   871   731   563   +308   871   in 2020   290   in 1902  
                                   
Hour-by-Hour Weather For December 2, 2020  
Climate Weather for December 2  
Weather History For December 2  
Weather Calendar  
Back To Weather Stat Page  
Home