Portsmouth Rhode Island Weather Almanac  
Saturday, June 7, 2025  
Dense Fog early then Cloudy and Rain, Much Cooler  
  Climate Normal Period Climate Record Period
    1991 - 2020 1893 - 2025
  Jun 7           Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   71   79   71   +0   91   in 1925   55   in 1982  
Minimum Temperature   63   62   55   +8   63   in 2025   46   in 2007  
Average Temperature   67   71   63   +4   75   in 1999   52   in 2002  
 Month Avg Max Temperature   74.7   75.9   70.4   +4.3   85.6   in 1925   58.3   in 1907  
Month Avg Min Temperature   56.1   57.4   54.0   +2.1   61.6   in 1925   45.6   in 1945  
Month Average Temperature   65.6   67.1   62.4   +3.1   73.7   in 1925   52.4   in 1907  
High Heat Index   74   82           94   in 1999            
Low Wind Chill                             39   in 2002  
Heating Degree Days   0   0   3   -3   13   in 2002   0   in Many  
Month Heating DD   14   1   25   -11   88   in 1907   0   in 1925  
Season Heating DD   5016   4948   5484   -468   6571   in 1905   4381   in 1932    
Cooling Degree Days   2   6   1   +1   10   in 1999   0   in All    
Month Cooling DD   18   16   7   +11   61   in 1925   0   in Many    
Year Cooling DD   18   16   7   +11   61   in 1925   0   in Many    
Maximum Dew Point   70   72   60   +10   72   in 2024   44   in 1958    
Minimum Dew Point   62   59   50   +12   62   in 2025   31   in 1958    
Average  Dew Point   66   66   55   +11   66   in 2025   38   in 1958  
 Month Avg Max Dew Point   63.0   64.1   59.4   +3.6   66.0   in 2010   49.4   in 1988  
Month Avg Min Dew Point   52.3   53.7   49.3   +3.0   56.6   in 2010   40.4   in 1988  
Month Average Dew Point   57.6   58.9   54.3   +3.4   61.3   in 2010   44.9   in 1988  
Precipitation   .28   .00   .12   +.16   3.39   in 2013            
One Hour Rain   .15   .00           .99   in 2013            
Half Hour Rain   .09   .00         .62   in 2013            
Hourly Rain Rate   1.03   .00           4.14   in 2013            
Month Precipitation   .28   .54   .81   -.53   6.84   in 1982   .00   in 2005  
Year Precipitation   20.67   29.70   19.85   +.82   36.73   in 1983   12.64   in 1957  
Snow   0.0   0.0   #N/A   #N/A   0.0   in 1900   0.0   in Many  
Snow Depth   0   0   0       0   in 2020   0   in Many  
Month Snow   0.0   0.0   T       #N/A   in #N/A   0.0   in Many  
Season Snow   11.9   12.7   33.8   21.9   84.1   in 1996   5.0   in 1998  
    Jun 7           Record Record
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest
Maximum Humidity   99%   99%   92%   +7%   100%   in 2017   64%   in 1988  
Minimum Humidity   94%   68%   58%   +36%   94%   in 2025   25%   in 1988  
Average Humidity   97%   84%   75%   +22%   97%   in 2025   45%   in 1988  
Maximum Barometer   29.87   29.64   29.99   -00.12   30.35   in 1974   29.54   in 1977  
Minimum Barometer   29.69   29.53   29.77   -00.08   30.16   in 1974   29.23   in 1975  
Average Barometer   29.78   29.59   29.88   -00.10   30.26   in 1974   29.40   in 1977  
Average Wind   5.7   5.6   6.4   -0.7   17.5   in 1982   2.8   in 2012  
Direction   S   S   S       NNE         WNW        
High Wind Gust   22   18   22   -0   46   in 1982   12   in 2003  
Direction   N   S   SSW       NNE         SSE        
Maximum Water Temp   64.6   63.5   61.9   +2.7   68.0   in 2007   54.0   in 2020  
Minimum Water Temp   58.6   59.5   58.5   +0.1   65.3   in 2007   50.7   in 2020  
Average Water Temp   61.6   61.5   60.2   +1.4   66.7   in 2007   52.4   in 2020  
Sunrise/ AM Twilight   5:11:23 AM   4:37:46 AM            
Sunset / PM Twilight   8:16:45 PM   8:50:55 PM            
Length Of Day   15:05:22                          
Special Conditions   Dense Fog  
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