Portsmouth Rhode Island Weather Almanac
Friday, July 31, 2020
Cloudy, Morning Light Rain, Partly Cloudy PM, Warm and Muggy
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    July 31, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   84   87   79   +5   97   in 1917   63   in 1923  
Minimum Temperature   67   71   66   +1   73   in 1917   51   in 1956  
Average Temperature   76   79   73   +3   85   in 1917   61   in 1923  
Precipitation   .06   .00   .11   -.05   1.38   in 1927            
One Hour   .02   .00           .25   in 1996            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0           0   in            
Heating Degree Days   0   0   0   +0   4   in 1923   0   in 2020  
Cooling Degree Days   11   14   8   +3   20   in 1917   0   in 1996  
Maximum Dew Point   73   75   69   +4   76   in 1994   50   in 1964  
Minimum Dew Point   65   69   61   +5   70   in 2004   42   in 1964  
Average  Dew Point   69   72   65   +4   73   in 2004   46   in 1964  
Maximum Humidity   94%   94%   94%   +0%   100%   in 2015   63%   in 1964  
Minimum Humidity   66%   65%   60%   +6%   89%   in 2009   34%   in 1953  
Average Humidity   80%   80%   77%   +3%   93%   in 2009   50%   in 1964  
Maximum Barometer   29.86   30.04   30.06   -00.20   30.37   in 1968   29.73   in 2008  
Minimum Barometer   29.78   30.00   29.88   -00.10   30.22   in 2003   29.56   in 2008  
Average Barometer   29.82   30.02   29.97   -00.15   30.25   in 2003   29.65   in 2008  
Average Wind   2.3   5.4   5.1   -2.8   10.9   in 1971   1.6   in 1965  
Direction   NNW   SSW   SSW       SSW         S        
High Wind Gust   11   18   19   -8   36   in 1954   9   in 1998  
Direction   WNW   S   SSW       SSW         N        
High Heat Index   89   97   82   +7   97   in 2019            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   68.4   74.2   71.7   -3.3   75.4   in 2006   66.7   in 1996  
Minimum Water Temp   63.5   70.7   68.4   -4.9   71.5   in 2013   63.5   in 2020  
Average Water Temp   66.0   72.5   70.1   -4.1   73.0   in 2013   65.9   in 1996  
Sunrise/ AM Twilight   5:40:24 AM   5:09:20 AM            
Sunset / PM Twilight   8:02:45 PM   8:33:49 PM            
Length Of Day   14:22:21                          
Special Conditions   Fog                                  
Comments      
    July 31, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   83.5   84.2   79.3   +4.2   84.7   in 1952   74.3   in 1902  
Avg Minimum Temperature   67.2   66.2   63.8   +3.4   69.6   in 2013   59.5   in 1962  
Average Temperature   75.7   75.2   71.6   +4.1   75.9   in 2013   67.6   in 1914  
Total Precipitation   1.36   6.17   3.38   -2.02   9.05   in 2009   .36   in 1952  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total Heating Deg Days   0   0   3   -3   34   in 1914   0   in 2020  
Total Cooling Deg Days   331   325   215   +116   339   in 2013   108   in 1902  
Avg Maximum Dew Point   71.8   70.6   67.5   +4.2   73.5   in 1994   61.8   in 1965  
Avg Minimum Dew Point   63.8   62.4   58.9   +4.9   66.7   in 2013   51.8   in 1965  
Average  Dew Point   67.8   66.5   63.2   +4.6   69.8   in 2013   56.8   in 1965  
    July 31, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   22.38   35.23   27.81   -5.43   41.55   in 1998   14.33   in 1957  
Total Snow (since Jul 1 20)   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD (since Jul 1 20)   0   0   3   -3   34   in 1914   0   in 2020  
Total CDD (since Jan 1)   464   420   304   +160   472   in 2010   133   in 1902  
                             
Hour-by-Hour Weather For July 31, 2020  
Climate Weather for July 31  
Weather History For July 31  
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