Portsmouth Rhode Island Weather Almanac
Thursday, August 13, 2020
Mostly Cloudy, Heavy Rain Shower @ Noon then Cloudy PM, Light Winds, Foggy and Cooler
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    August 13, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   80   73   79   +1   89   in 2016   64   in 1996  
Minimum Temperature   70   68   64   +6   73   in 1988   50   in 1957  
Average Temperature   75   71   71   +4   81   in 2016   61   in 1941  
Precipitation   .43   .47   .12   +.31   1.54   in 1942            
One Hour   .37   .16           .77   in 2001            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0           0   in            
HDD   0   0   0   +0   4   in 1941   0   in 2020  
CDD   10   6   7   +3   16   in 2016   0   in 2006  
Maximum Dew Point   74   70   67   +7   79   in 2016   51   in 1966  
Minimum Dew Point   66   63   59   +7   71   in 2005   42   in 1964  
Average  Dew Point   70   67   63   +7   74   in 2016   48   in 1966  
Maximum Humidity   96%   97%   93%   +3%   100%   in 2018   68%   in 1966  
Minimum Humidity   68%   75%   61%   +7%   92%   in 2018   33%   in 2006  
Average Humidity   82%   86%   77%   +5%   96%   in 2018   54%   in 1966  
Maximum Barometer   30.10   29.88   30.06   +00.04   30.41   in 1986   29.80   in 1964  
Minimum Barometer   30.05   29.78   29.86   +00.19   30.23   in 2003   29.35   in 1963  
Average Barometer   30.08   29.83   29.96   +00.12   30.27   in 2003   29.62   in 1963  
Average Wind   2.6   5.5   5.6   -3.0   16.5   in 1955   2.0   in 2013  
Direction   NNW   SSW   SSW       ESE         SSW        
High Wind Gust   13   15   20   -7   46   in 1955   11   in 2003  
Direction   NE   SSW   SSW       ESE         S        
High Heat Index   81   74   80   +1   104   in 2016            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   71.2   73.8   71.7   -0.5   77.5   in 2016   68.2   in 1997  
Minimum Water Temp   68.9   71.4   68.9   -0.0   74.3   in 2012   65.8   in 2017  
Average Water Temp   70.1   72.6   70.3   -0.3   75.6   in 2012   67.3   in 2006  
Sunrise/ AM Twilight   5:52:57 AM   5:23:08 AM            
Sunset / PM Twilight   7:46:58 PM   8:16:47 PM            
Length Of Day   13:54:01                          
Special Conditions   Fog                                  
Comments      
    August 13, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   85.1   81.8   79.0   +6.1   85.1   in 2020   71.5   in 1903  
Avg Minimum Temperature   69.5   65.1   64.8   +4.7   72.0   in 1988   56.4   in 1964  
Average Temperature   77.5   73.7   71.9   +5.5   78.7   in 1988   64.8   in 1964  
Total Precipitation   .55   .66   1.53   -.98   7.09   in 1952   T   in 2005  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   0   0   +0   18   in 1903   0   in 2020  
Total CDD   162   113   98   +64   178   in 1988   11   in 1964  
Avg Maximum Dew Point   73.5   67.8   68.5   +5.1   74.2   in 2018   59.1   in 1964  
Avg Minimum Dew Point   65.3   59.0   60.3   +5.0   69.3   in 2003   47.9   in 1964  
Average  Dew Point   69.4   63.4   64.4   +5.0   71.4   in 2003   53.5   in 1964  
    August 13, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   22.93   35.89   29.34   -6.41   43.87   in 1983   15.63   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   18   in 1903   0   in 2020  
Total CDD (since Jan 1)   626   533   402   +224   626   in 2020   203   in 1902  
                             
Hour-by-Hour Weather For August 13, 2020  
Climate Weather for August 13  
Weather History For August 13  
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