Portsmouth Rhode Island Weather Almanac
Wednesday, July 29, 2020
Mostly Cloudy early, Partly Cloudy Day to Clear PM, Hot
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    July 29, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   87   88   80   +7   92   in 1949   67   in 1926  
Minimum Temperature   70   71   65   +5   73   in 1995   55   in 1977  
Average Temperature   79   80   73   +6   82   in 1949   62   in 1914  
Precipitation   .00   .00   .11   -.11   2.10   in 1897            
One Hour   .00   .00           .90   in 2002            
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   3   in 1914   0   in 2020  
Cooling Degree Days   14   15   8   +6   17   in 1949   0   in 2017  
Maximum Dew Point   71   74   69   +3   75   in 2016   50   in 1968  
Minimum Dew Point   60   69   60   -0   70   in 2007   44   in 1968  
Average  Dew Point   66   72   64   +2   73   in 1995   47   in 1968  
Maximum Humidity   94%   94%   93%   +1%   100%   in 2016   70%   in 1956  
Minimum Humidity   41%   59%   62%   -21%   93%   in 1986   33%   in 1968  
Average Humidity   68%   77%   78%   -10%   97%   in 1986   52%   in 1968  
Maximum Barometer   29.94   30.01   30.01   -00.07   30.33   in 1984   29.77   in 1966  
Minimum Barometer   29.86   29.95   29.82   +00.04   30.24   in 1996   29.48   in 1981  
Average Barometer   29.90   29.98   29.91   -00.01   30.28   in 1996   29.65   in 1966  
Average Wind   4.9   5.4   5.5   -0.6   11.4   in 1968   1.6   in 1996  
Direction   SW   SSW   S       WNW         SSE        
High Wind Gust   21   19   20   +1   44   in 1941   10   in 1991  
Direction   SW   SSW   S       NE         NNE        
High Heat Index   89   96   81   +8   96   in 2019            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   69.4   73.5   71.6   -2.2   74.6   in 2006   68.5   in 2017  
Minimum Water Temp   64.0   70.3   68.0   -4.0   71.1   in 2007   60.6   in 2003  
Average Water Temp   66.7   71.9   69.8   -3.1   72.4   in 2007   66.3   in 2017  
Sunrise/ AM Twilight   5:38:27 AM   5:07:10 AM            
Sunset / PM Twilight   8:04:56 PM   8:36:13 PM            
Length Of Day   14:26:29                          
Special Conditions   None                                  
Comments   Midnight temp of 78° broke record of 77° set in 1995  
    July 29, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   83.3   83.9   79.2   +4.1   84.8   in 1952   74.0   in 1902  
Avg Minimum Temperature   67.0   65.9   63.7   +3.3   70.0   in 2013   59.3   in 1962  
Average Temperature   75.5   74.9   71.5   +4.0   76.2   in 2013   67.8   in 1902  
Total Precipitation   1.30   6.17   3.16   -1.86   8.73   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   28   in 1914   0   in 2020  
Total Cooling Deg Days   304   295   199   +105   326   in 2013   95   in 1902  
Avg Maximum Dew Point   71.6   70.3   67.5   +4.2   73.4   in 2013   61.9   in 1962  
Avg Minimum Dew Point   63.6   61.9   58.8   +4.8   67.4   in 2013   52.0   in 1965  
Average  Dew Point   67.6   66.1   63.1   +4.5   70.4   in 2013   57.1   in 1965  
    July 29, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   22.32   35.23   27.59   -5.27   41.06   in 1998   14.31   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   28   in 1914   0   in 2020  
Total CDD (since Jan 1)   437   390   288   +149   463   in 2010   120   in 1902  
                             
Hour-by-Hour Weather For July 29, 2020  
Climate Weather for July 29  
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