Portsmouth Rhode Island Weather Almanac  
Tuesday, April 8, 2025  
Cloudy, Light Rain & Fog Early, Partly Cloudy, Moderate Ice Pellets Noontime, Windy and Colder  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2025
    April 8, 2025   Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   46   61   53   -7   81   in 1991   35   in 2003  
Minimum Temperature   30   35   37   -7   53   in 2010   23   in 1972  
Average Temperature   38   48   45   -7   64   in 1991   31   in 1982  
 Month Avg Max Temperature   52.5   48.4   51.5   +1.0   64.5   in 2010   40.8   in 2003  
Month Avg Min Temperature   38.3   35.9   36.4   +1.9   45.0   in 2010   27.1   in 1982  
Month Average Temperature   45.6   42.4   44.3   +1.4   54.9   in 2010   36.0   in 1896  
High Heat Index                   80   in 1991            
Low Wind Chill   20   32   29   -9             8   in 1972  
Heating Degree Days   27   17   20   +7   34   in 1982   1   in 1991  
Month Heating DD   155   181   166   -11   232   in 1896   81   in 2010  
Season Heating DD   4518   4413   4816   -298   5847   in 1918   4009   in 2012  
Cooling Degree Days   0   0   0   +0   0   in 1900   0   in All  
Month Cooling DD                                      
Year Cooling DD                                      
Maximum Dew Point   45   38   40   +5   60   in 1962   8   in 1982  
Minimum Dew Point   18   29   27   -9   48   in 2010   3   in 1982  
Average  Dew Point   32   34   34   -2   51   in 2010   6   in 1982  
 Month Avg Max Dew Point   46.5   39.0   39.4   +7.1   52.3   in 2010   22.4   in 1965  
Month Avg Min Dew Point   29.9   31.5   25.9   +4.0   41.1   in 2010   10.3   in 1982  
Month Average Dew Point   38.2   35.3   32.6   +5.6   46.7   in 2010   17.2   in 1965  
Precipitation   .07   .00   .14   -.07   1.32   in 1903            
One Hour Rain   .04   .00           .39   in 1983            
Half Hour Rain   .02   .00         .24   in 2022            
Hourly Rain Rate   .24   .00           3.51   in 2022            
Month Precipitation   1.46   2.36   1.19   +.27   3.93   in 1901   .00   in 1925  
Year Precipitation   10.72   21.20   12.65   -1.93   21.73   in 1983   6.44   in 2012  
Snow   T   0.0   0.0   +0.0   2.6   in 1997   0.0   in    
Snow Depth   0   0   0.1   -0.1   8   in 1982   0   in    
Month Snow   T   0.0   0.5   -0.5   8.0   in 1982   0.0   in 2024  
Season Snow   11.9   12.7   33.5   -21.6   78.0   in 2005   5.0   in 1998  
    April 8, 2025     Record Record
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest
Maximum Humidity   96%   89%   85%   +11%   100%   in 2014   41%   in 1982  
Minimum Humidity   47%   30%   48%   -1%   96%   in 1986   17%   in 1994  
Average Humidity   72%   60%   66%   +5%   98%   in 1986   36%   in 1982  
Maximum Barometer   29.93   30.14   30.01   -00.08   30.51   in 1980   29.28   in 1956  
Minimum Barometer   29.53   30.03   29.74   -00.21   30.33   in 2023   29.07   in 1956  
Average Barometer   29.73   30.09   29.87   -00.14   30.41   in 2023   29.18   in 1956  
Average Wind   10.7   5.1   8.4   +2.3   16.7   in 1988   3.4   in 1995  
Direction   WNW   SSW   NNW       NNE         N        
High Wind Gust   35   19   26   +9   53   in 1909   15   in 1998  
Direction   WNW   SSW   WNW       NW         ESE        
Maximum Water Temp   45.5   44.8   44.7   +0.8   56.1   in 2010   38.6   in 2003  
Minimum Water Temp   44.1   42.4   42.2   +1.9   47.3   in 2010   37.8   in 2003  
Average Water Temp   44.8   43.6   43.5   +1.3   51.7   in 2010   38.2   in 2003  
Sunrise/ AM Twilight   6:07:57 AM   5:46:22 AM            
Sunset / PM Twilight   7:18:21 PM   7:47:14 PM            
Length Of Day   13:03:04                          
Special Conditions   Fog, Moderate Ice Pellets  
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