Portsmouth Rhode Island Weather Almanac  
Sunday, April 6, 2025  
Cloudy, Rain and Fog early, Light Winds, Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2025
    April 6, 2025   Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   54   46   52   +2   73   in 1921   34   in 1982  
Minimum Temperature   41   36   37   +4   48   in 1962   19   in 1982  
Average Temperature   48   41   45   +3   57   in 1991   27   in 1982  
 Month Avg Max Temperature   54.3   46.2   51.2   +3.2   61.8   in 2010   40.7   in 1898  
Month Avg Min Temperature   39.7   36.0   36.2   +3.5   43.5   in 2010   25.0   in 1954  
Month Average Temperature   47.3   41.3   44.0   +3.3   52.8   in 2010   35.0   in 1954  
High Heat Index   76               76   in 2024            
Low Wind Chill   38   28   29   +9             5   in 1982  
Heating Degree Days   17   24   20   -3   38   in 1982   8   in 1991  
Month Heating DD   106   142   126   -20   180   in 1954   73   in 2010  
Season Heating DD   4469   4374   4776   -307   5805   in 1918   3974   in 2012  
Cooling Degree Days   0   0   0   +0   0   in 1900   0   in All  
Month Cooling DD                                      
Year Cooling DD                                      
Maximum Dew Point   50   38   40   +10   54   in 2023   22   in 2007  
Minimum Dew Point   40   32   26   +14   44   in 2010   0   in 1995  
Average  Dew Point   45   35   33   +12   49   in 2010   14   in 1995  
 Month Avg Max Dew Point   47.7   39.8   39.2   +8.5   50.8   in 2010   17.0   in 1965  
Month Avg Min Dew Point   30.8   32.0   25.5   +5.3   39.5   in 2010   7.2   in 1965  
Month Average Dew Point   39.3   35.9   32.3   +6.9   45.2   in 2010   12.1   in 1965  
Precipitation   .29   .12   .15   +.14   2.17   in 2009            
One Hour Rain   .21   .04           .69   in 2009            
Half Hour Rain   .12   .03         .38   in 2009            
Hourly Rain Rate   .92   .14           3.58   in 2017            
Month Precipitation   1.20   2.36   .90   +.30   3.72   in 2017   .00   in 1925  
Year Precipitation   10.46   21.20   12.36   -1.90   21.34   in 1998   6.44   in 2012  
Snow   0.0   0.0   0.0   +0.0   6.3   in 1997   0.0   in    
Snow Depth   0   0   0.0   -0.0   2   in 1915   0   in    
Month Snow   0.0   0.0   0.5   -0.5   7.9   in 1915   0.0   in 2025  
Season Snow   11.9   12.7   33.5   -21.6   78.0   in 2005   5.0   in 1998  
    April 6, 2025     Record Record
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest
Maximum Humidity   98%   92%   86%   +12%   100%   in 2017   52%   in 1992  
Minimum Humidity   72%   63%   47%   +25%   94%   in 1987   18%   in 2013  
Average Humidity   85%   78%   67%   +18%   97%   in 1987   37%   in 1963  
Maximum Barometer   29.97   29.88   30.03   -00.06   30.55   in 2003   29.52   in 1957  
Minimum Barometer   29.75   29.62   29.72   +00.03   30.25   in 1993   29.04   in 1982  
Average Barometer   29.86   29.75   29.88   -00.02   30.29   in 1993   29.34   in 1982  
Average Wind   4.0   11.1   8.3   -4.3   19.1   in 1985   3.4   in 1965  
Direction   NNW   N   WNW       SSW         NNW        
High Wind Gust   14   30   27   -13   56   in 1949   14   in 2025  
Direction   NNW   N   NNW       SW         NNW        
Maximum Water Temp   45.0   43.7   44.2   +0.8   53.9   in 2010   40.3   in 2018  
Minimum Water Temp   44.1   42.4   41.9   +2.2   50.7   in 2010   38.7   in 2003  
Average Water Temp   44.6   43.1   43.1   +1.5   52.3   in 2010   39.8   in 2003  
Sunrise/ AM Twilight   6:11:13 AM   5:49:44 AM            
Sunset / PM Twilight   7:16:10 PM   7:44:57 PM            
Length Of Day   12:57:36                          
Special Conditions   Fog                                  
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