Portsmouth Rhode Island Weather Almanac  
Saturday, July 27, 2024  
Clear, Light Winds, Continued Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    July 27, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   84   83   80   +4   94   in 1940   67   in 1993  
Minimum Temperature   63   71   65   -2   73   in 1995   53   in 2001  
Average Temperature   74   77   73   +1   82   in 2020   63   in 2001  
 Month Avg Max Temperature   81.7   81.9   79.7   +2.0   84.4   in 1955   73.5   in 1902  
Month Avg Min Temperature   68.1   68.0   64.6   +3.6   70.1   in 2013   59.2   in 1962  
Month Average Temperature   75.1   75.2   72.5   +2.6   76.3   in 2013   67.4   in 1902  
High Heat Index   89   92   82   +7   101   in 1940            
Low Wind Chill                                      
Heating Degree Days   0   0   0   +0   2   in 2001   0   in 2024  
Month Heating DD   0   0   3   -3   23   in 1914   0   in 2024  
Season Heating DD   0   0   3   -3   2   in 2001   0   in 2024    
Cooling Degree Days   9   12   8   +1   17   in 2020   0   in 2004    
Month Cooling DD   274   275   203   +71   306   in 2013   78   in 1902    
Year Cooling DD   412   351   296   +116   441   in 2010   103   in 1902    
Maximum Dew Point   71   78   69   +2   79   in 1995   54   in 2001    
Minimum Dew Point   58   69   61   -3   71   in 2018   44   in 1977    
Average  Dew Point   65   74   65   +0   75   in 1995   50   in 2001  
 Month Avg Max Dew Point   73.1   74.5   68.5   +4.6   74.5   in 2023   62.0   in 1962  
Month Avg Min Dew Point   65.3   66.4   60.1   +5.2   67.4   in 2013   52.1   in 1965  
Month Average Dew Point   69.2   70.5   64.3   +4.9   70.5   in 2023   57.1   in 1965  
Precipitation   .00   .07   .10   -.10   1.92   in 1990            
One Hour Rain   .00   .07           .85   in 2015            
Half Hour Rain   .00   .05           .61   in 2015            
Hourly Rain Rate   .00   .57           4.50   in 2015            
Month Precipitation   1.15   5.53   2.68   -1.53   8.73   in 2009   .36   in 1952  
Year Precipitation   35.10   30.01   25.38   +9.72   41.06   in 1998   13.93   in 1957  
Snow   0.0   0.0   0.0   +0.0   0.0   in 1900            
Snow Depth   0   0   0   +0   0   in              
Month Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in Many  
Season Snow                                      
    July 27, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   95%   98%   92%   +3%   100%   in 2018   66%   in 1983  
Minimum Humidity   53%   86%   62%   -9%   90%   in 2000   35%   in 1987  
Average Humidity   74%   92%   77%   -3%   95%   in 2000   57%   in 1983  
Maximum Barometer   30.14   30.04   30.03   +00.11   30.42   in 1990   29.81   in 1992  
Minimum Barometer   30.08   29.86   29.84   +00.24   30.20   in 2019   29.52   in 1989  
Average Barometer   30.11   29.95   29.94   +00.17   30.26   in 2019   29.67   in 1992  
Average Wind   4.5   8.3   5.7   -1.2   11.5   in 1973   2.6   in 1991  
Direction   S   SW   SW       SW         NNE        
High Wind Gust   16   33   20   -4   40   in 1927   11   in 1990  
Direction   NW   SW   S       NE         ENE        
Maximum Water Temp   72.1   77.4   71.8   +0.3   77.4   in 2023   67.1   in 2001  
Minimum Water Temp   70.0   75.4   68.9   +1.1   75.4   in 2023   64.6   in 1996  
Average Water Temp   71.1   76.4   70.4   +0.7   76.4   in 2023   66.1   in 2001  
Sunrise/ AM Twilight   5:35:20 AM   5:04:46 AM            
Sunset / PM Twilight   8:07:15 PM   8:38:46 PM            
Length Of Day   14:33:23                          
Special Conditions   None                                  
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