Portsmouth Rhode Island Weather Almanac  
Sunday, December 3, 2023  
Cloudy, Moderate Rain and Fog, Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    December 3, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   46   57   46   +0   62   in 2009   22   in 1976  
Minimum Temperature   44   43   33   +11   50   in 2009   8   in 1976  
Average Temperature   45   50   40   +5   56   in 2009   15   in 1976  
 Month Avg Max Temperature   51.0   49.0   46.7   +4.3   57.7   in 1932   25.7   in 1896  
Month Avg Min Temperature   44.0   35.7   33.7   +10.3   44.0   in 2023   14.3   in 1989  
Month Average Temperature   47.7   42.7   40.0   +7.7   50.3   in 1998   22.0   in 1896  
High Heat Index                   #N/A   in #N/A            
Low Wind Chill   38   36   23   +15             -12   in 1976  
Heating Degree Days   20   15   25   -5   50   in 1976   9   in 2009  
Month Heating DD   52   67   75   -23   129   in 1896   44   in 1998  
Season Heating DD   993   888   1065   -72   1418   in 1904   842   in 2011  
Cooling Degree Days   0   0   0   +0       in     0   in Many  
Month Cooling DD   0   0   0   +0   3   in 2022   0   in Many  
Year Cooling DD   726   784   609   +117   871   in 2020   290   in 1902  
Maximum Dew Point   45   55   39   +6   61   in 2009   9   in 1976  
Minimum Dew Point   43   33   25   +18   43   in 2023   -15   in 1976  
Average  Dew Point   44   44   32   +12   51   in 2009   -3   in 1976  
 Month Avg Max Dew Point   47.7   44.0   38.8   +8.9   52.7   in 2006   13.3   in 1976  
Month Avg Min Dew Point   41.7   26.3   24.0   +17.7   41.7   in 2023   -1.3   in 1989  
Month Average Dew Point   44.7   35.3   31.4   +13.3   44.7   in 2023   6.7   in 1976  
Precipitation   .87   .52   .15   +.72   2.34   in 1986            
One Hour Rain   .15   .15           .96   in 1986            
Half Hour Rain   .14   .08           .20   in 2009            
Hourly Rain Rate   1.13   .29           1.13   in 2023            
Month Precipitation   .93   .52   .45   +.48   2.35   in 1925   .00   in 2011  
Year Precipitation   49.98   38.33   41.88   +8.10   60.42   in 1983   24.15   in 1957  
Snow   0.0   0.0   0.1   -0.1   3.4   in 2019            
Snow Depth   0   0   0   -0   6   in 1898            
Month Snow   0.0   0.0   0.3   -0.3   4.2   in 2019   0.0   in 2023  
Season Snow   T   0.0   0.9   -0.9   19.5   in 1898   0.0   in 2022  
    December 3, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   98%   87%   +12%   100%   in 2018   52%   in 1976  
Minimum Humidity   97%   68%   54%   +43%   97%   in 2023   24%   in 1960  
Average Humidity   98%   83%   70%   +28%   98%   in 2023   40%   in 1976  
Maximum Barometer   30.03   30.43   30.15   -00.12   30.76   in 1990   29.41   in 1974  
Minimum Barometer   29.62   29.92   29.83   -00.21   30.48   in 2011   29.03   in 1989  
Average Barometer   29.83   30.18   29.99   -00.17   30.59   in 2011   29.23   in 1974  
Average Wind   7.8   14.6   7.6   +0.2   17.3   in 2019   1.8   in 1962  
Direction   ENE   S   WNW       WNW SSE
High Wind Gust   17   41   24   -7   48   in 2009   8   in 1999  
Direction   E   SW   WNW       SSW NW
Maximum Water Temp   51.1   51.4   48.9   +2.2   53.1   in 2001   43.0   in 1997  
Minimum Water Temp   49.3   48.2   46.4   +2.9   50.5   in 2001   39.6   in 2003  
Average Water Temp   50.2   49.8   47.7   +2.5   51.8   in 2001   41.4   in 1997  
Sunrise/ AM Twilight   6:53:58 AM   6:25:09 AM            
Sunset / PM Twilight   4:15:25 PM   4:44:38 PM            
Length Of Day   9:21:27                          
Special Conditions   Fog, Thunderstorm                          
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