Portsmouth Rhode Island Weather Almanac  
Saturday, April 5, 2025  
Partly Cloudy early then Cloudy PM Rain and Fog, Much Colder  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2025
    April 5, 2025   Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   48   46   52   -4   72   in 1921   32   in 1995  
Minimum Temperature   40   33   37   +3   47   in 2010   19   in 1995  
Average Temperature   44   40   44   +0   58   in 1921   26   in 1995  
 Month Avg Max Temperature   54.4   46.2   51.0   +3.4   61.0   in 2010   40.8   in 1911  
Month Avg Min Temperature   39.4   36.0   36.0   +3.4   43.0   in 2010   22.8   in 1954  
Month Average Temperature   47.2   41.4   43.8   +3.4   52.2   in 2010   33.0   in 1954  
High Heat Index   76               76   in 2024            
Low Wind Chill   34   26   28   +6             0   in 1995  
Heating Degree Days   21   25   21   +0   39   in 1995   7   in 1921  
Month Heating DD   89   118   106   -17   160   in 1954   64   in 2010  
Season Heating DD   4452   4350   4756   -304   5784   in 1918   3953   in 2012  
Cooling Degree Days   0   0   0   +0   0   in 1900   0   in All  
Month Cooling DD                                      
Year Cooling DD                                      
Maximum Dew Point   40   34   40   +0   57   in 1974   6   in 1995  
Minimum Dew Point   36   30   26   +10   47   in 1974   -6   in 1995  
Average  Dew Point   38   32   33   +5   52   in 1974   0   in 1995  
 Month Avg Max Dew Point   47.2   40.2   39.0   +8.2   50.2   in 2010   15.0   in 1965  
Month Avg Min Dew Point   29.0   32.0   25.4   +3.6   38.6   in 2010   5.8   in 1965  
Month Average Dew Point   38.1   36.1   32.2   +5.9   44.4   in 2010   10.4   in 1965  
Precipitation   .42   .00   .15   +.27   2.21   in 1977            
One Hour Rain   .16   .00           .55   in 1977            
Half Hour Rain   .11   .00         .21   in 2007            
Hourly Rain Rate   .62   .00           1.07   in 2007            
Month Precipitation   .91   2.24   .75   +.16   3.46   in 1973   .00   in 2010  
Year Precipitation   10.17   21.08   12.21   -2.04   21.34   in 1998   6.44   in 2012  
Snow   0.0   0.0   0.1   -0.1   0.4   in 1997   0.0   in    
Snow Depth   0   0   0.1   -0.1   5   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 5, 2025     Record Record
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest
Maximum Humidity   96%   91%   84%   +12%   100%   in 2008   38%   in 1976  
Minimum Humidity   65%   60%   47%   +18%   93%   in 1987   14%   in 1963  
Average Humidity   81%   76%   66%   +15%   97%   in 1987   28%   in 1963  
Maximum Barometer   30.42   29.63   30.02   +00.40   30.59   in 1986   29.51   in 1973  
Minimum Barometer   29.97   29.47   29.70   +00.27   30.33   in 1954   28.98   in 1977  
Average Barometer   30.20   29.55   29.86   +00.33   30.43   in 2019   29.30   in 1973  
Average Wind   7.0   10.0   9.1   -2.1   18.5   in 1995   2.9   in 1996  
Direction   SE   WNW   WNW       WNW         NNW        
High Wind Gust   25   26   28   -3   53   in 1984   13   in 1971  
Direction   SE   WNW   NW       SE         N        
Maximum Water Temp   45.3   44.1   43.9   +1.4   54.1   in 2010   39.1   in 2003  
Minimum Water Temp   44.4   42.1   41.6   +2.8   46.9   in 2010   38.4   in 2003  
Average Water Temp   44.9   43.1   42.8   +2.1   50.5   in 2010   38.8   in 2003  
Sunrise/ AM Twilight   6:12:50 AM   5:51:26 AM            
Sunset / PM Twilight   7:15:05 PM   7:43:49 PM            
Length Of Day   12:54:52                          
Special Conditions   Fog                                  
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