Portsmouth Rhode Island Weather Almanac  
Sunday, July 6, 2025  
Partly Cloud Morning then Clear, Warmer and Humid  
  Climate Normal Period Climate Record Period
    1991 - 2020 1893 - 2025
  July 6           Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   84   75   79   +5   98   in 2010   61   in 1956  
Minimum Temperature   67   71   64   +3   74   in 1999   50   in 1979  
Average Temperature   76   73   72   +4   85   in 2010   58   in 1956  
 Month Avg Max Temperature   82.5   78.0   78.8   +3.7   89.0   in 1955   68.8   in 1914  
Month Avg Min Temperature   64.8   64.7   63.5   +1.3   70.3   in 2013   53.7   in 1962  
Month Average Temperature   74.0   71.5   71.5   +2.5   77.8   in 1955   62.0   in 1914  
High Heat Index   90   79           111   in 2010            
Low Wind Chill                             45   in 1979  
Heating Degree Days   0   0   0   +0   7   in 1956   0   in Many  
Month Heating DD   0   0   3   -3   19   in 1914   0   in Many  
Season Heating DD   0   0   3   -3   19   in 1914   0   in Many    
Cooling Degree Days   11   8   7   +4   20   in 2010   0   in 2001    
Month Cooling DD   54   39   39   +15   77   in 1955   1   in 1914    
Year Cooling DD   209   177   132   +77   215   in 1957   31   in 1972    
Maximum Dew Point   73   74   68   +5   77   in 1994   45   in 1979    
Minimum Dew Point   64   71   59   +5   71   in 2024   38   in 1965    
Average  Dew Point   69   73   64   +5   73   in 2024   44   in 1979  
 Month Avg Max Dew Point   71.5   68.5   67.5   +4.0   75.0   in 2023   51.3   in 1982  
Month Avg Min Dew Point   62.2   61.7   58.8   +3.3   68.2   in 2013   43.7   in 1982  
Month Average Dew Point   66.8   65.1   63.2   +3.7   70.9   in 2013   47.5   in 1982  
Precipitation   .00   .10   .11   -.11   1.70   in 1955            
One Hour Rain   .00   .04           .59   in 1955            
Half Hour Rain   .00   .03         .16   in 2006            
Hourly Rain Rate   .00   .17           1.17   in 2018            
Month Precipitation   .31   .17   .66   -.35   3.03   in 2014   .00   in 2019  
Year Precipitation   21.68   34.12   23.36   -1.68   40.73   in 1998   12.92   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 1900   0   in Many  
Month Snow   0.0   0.0   T       #N/A   in #N/A   0.0   in Many  
Season Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in #N/A  
    July 6           Record Record
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest
Maximum Humidity   96%   99%   93%   +3%   100%   in 2004   60%   in 1977  
Minimum Humidity   69%   93%   57%   +12%   93%   in 2024   26%   in 1965  
Average Humidity   83%   96%   75%   +7%   96%   in 2024   46%   in 1977  
Maximum Barometer   30.08   29.93   30.02   +00.06   30.45   in 1906   29.75   in 1954  
Minimum Barometer   29.99   29.84   29.84   +00.15   30.11   in 1995   29.47   in 1951  
Average Barometer   30.04   29.89   29.93   +00.10   30.18   in 1995   29.64   in 1951  
Average Wind   8.2   11.0   5.6   +2.6   15.8   in 1984   1.3   in 1989  
Direction   SSW   SSW   SSW       SSW         SW        
High Wind Gust   26   26   20   +6   39   in 1980   11   in 2006  
Direction   SSW   S   SSW       NNW         W        
Maximum Water Temp   74.0   68.7   70.5   +3.5   76.3   in 2013   64.8   in 2020  
Minimum Water Temp   71.6   67.3   66.1   +5.5   71.6   in 2025   60.8   in 2005  
Average Water Temp   72.8   68.0   68.3   +4.5   73.6   in 2013   63.0   in 2020  
Sunrise/ AM Twilight   5:17:52 AM   4:45:23 AM            
Sunset / PM Twilight   8:21:42 PM   8:55:02 PM            
Length Of Day   15:04:19                          
Special Conditions   None                                  
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