Portsmouth Rhode Island Weather Almanac  
Tuesday, December 7, 2021  
Partly Cloudy, Windy Morning to Mostly Cloudy PM, Much Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2021
    December 7, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   45   36   45   +0   67   in 1998   26   in 1954  
Minimum Temperature   35   28   32   +3   51   in 1932   11   in 1906  
Average Temperature   40   32   39   +1   58   in 1998   21   in 1954  
 Month Avg Max Temperature   49.7   47.9   46.0   +3.7   59.1   in 1998   32.6   in 1954  
Month Avg Min Temperature   36.0   36.0   33.0   +3.0   45.3   in 2001   14.9   in 1989  
Month Average Temperature   43.0   42.1   39.4   +3.6   52.6   in 2001   25.4   in 1926  
High Heat Index                                      
Low Wind Chill   30   19   22   +8             -1   in 1989  
Heating Degree Days   25   33   26   -1   44   in 1954   7   in 1998  
Month HDD   154   160   179   -25   277   in 1926   87   in 2001  
Season HDD   948   953   1169   -221   1568   in 1904   901   in 2011  
Cooling Degree Days   0   0   0   +0       in         in    
Month CDD   0   0   0   +0   0   in         in    
Year Cooling Degree Days   795   871   609   +186   871   in 2020   290   in 1902  
Maximum Dew Point   39   24   38   +1   59   in 1953   11   in 1958  
Minimum Dew Point   20   20   23   -3   46   in 2011   -4   in 1989  
Average  Dew Point   30   22   31   -1   51   in 2011   8   in 1958  
 Month Avg Max Dew Point   41.4   40.0   37.8   +3.7   51.4   in 1982   21.3   in 1976  
Month Avg Min Dew Point   24.1   27.3   23.0   +1.1   37.7   in 2001   -2.9   in 1989  
Month Average Dew Point   33.0   33.9   30.4   +2.6   44.1   in 2001   10.6   in 1989  
Precipitation   .01   .00   .15   -.14   2.10   in 1908            
One Hour   .01   .00           .61   in 1996            
Hourly Rate   .00   .00           1.81   in 2011            
Month Precipitation   .39   2.53   1.05   -.66   4.15   in 1981   .00   in 2000  
Year Precipitation   45.97   39.41   42.48   +3.49   61.79   in 1983   24.35   in 1957  
Snow   0.0   0.0   0.2   -0.2   1.7   in 1922       in    
Snow Depth   0   0           17   in 1981       in    
Month Snow   0.0   T   1.0   -1.0   17.0   in 1981   0.0   in 2021  
Season Snow   T   0.6   1.6   -1.6   19.5   in 1898   0.0   in 2017  
    December 7, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   84%   78%   85%   -1%   100%   in 2004   53%   in 1958  
Minimum Humidity   43%   59%   54%   -11%   95%   in 2011   28%   in 1988  
Average Humidity   64%   69%   70%   -6%   97%   in 2004   46%   in 1995  
Maximum Barometer   30.19   29.78   30.11   +00.08   30.66   in 1935   29.45   in 1962  
Minimum Barometer   29.73   29.68   29.79   -00.06   30.26   in 1950   29.05   in 1959  
Average Barometer   29.96   29.73   29.95   +00.01   30.41   in 1950   29.28   in 1959  
Average Wind   8.4   6.2   8.5   -0.1   24.4   in 1983   0.6   in 2012  
Direction   WNW   NW   WNW       W         SSW        
High Wind Gust   33   26   27   +6   68   in 1953   7   in 1990  
Direction   WNW   NW   WNW       SSW         WNW        
Maximum Water Temp   52.5   50.0   48.0   +4.5   53.8   in 2011   42.8   in 2007  
Minimum Water Temp   50.0   48.7   45.5   +4.5   52.7   in 2011   40.3   in 2019  
Average Water Temp   51.3   49.4   46.7   +4.5   53.3   in 2011   41.9   in 2007  
Sunrise/ AM Twilight   6:56:48 AM   6:27:20 AM            
Sunset / PM Twilight   4:16:57 PM   4:46:25 PM            
Length Of Day   9:20:09                          
Special Conditions   None                              
Comments                                      
Hour-by-Hour Weather For December 7, 2021            
Climate Weather for December 7            
Weather History For December 7            
Weather Calendar            
Back To Weather Stat Page            
Home