Portsmouth Rhode Island Weather Almanac
Wednesday, August 19, 2020
Partly Cloudy early, Mostly Cloudy and Rain Afternoon to Partly Cloudy PM, Light Winds, Seasonal Temperatures
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    August 19, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   80   85   78   +2   89   in 2002   64   in 1927  
Minimum Temperature   62   69   63   -1   72   in 1956   51   in 2007  
Average Temperature   71   77   71   +0   80   in 2002   61   in 2007  
Precipitation   .11   .25   .12   -.01   3.28   in 1955            
One Hour   .08   .24           1.95   in 1955            
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 2007   0   in 2020  
CDD   6   12   6   +0   15   in 2002   0   in 2014  
Maximum Dew Point   65   76   66   -1   76   in 2019   51   in 1975  
Minimum Dew Point   57   67   58   -1   71   in 2015   45   in 1975  
Average  Dew Point   61   72   62   -1   73   in 2015   48   in 1975  
Maximum Humidity   94%   97%   93%   +1%   100%   in 2017   70%   in 1975  
Minimum Humidity   53%   74%   58%   -5%   92%   in 1955   31%   in 1999  
Average Humidity   74%   86%   76%   -2%   96%   in 1955   53%   in 1975  
Maximum Barometer   29.99   30.01   30.06   -00.07   30.43   in 1904   29.78   in 1965  
Minimum Barometer   29.88   29.94   29.84   +00.04   30.23   in 1996   28.47   in 1991  
Average Barometer   29.94   29.98   29.95   -00.01   30.32   in 1996   29.37   in 1991  
Average Wind   2.8   6.4   5.7   -2.9   18.7   in 1991   0.9   in 1978  
Direction   NNW   S   SSW       ESE         S        
High Wind Gust   12   28   21   -9   105   in 1991   11   in 1978  
Direction   SW   NW   SSW       ESE         SSW        
High Heat Index   81   94   79   +2   95   in 2009            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   67.6   73.5   71.7   -4.1   75.6   in 2003   67.6   in 2020  
Minimum Water Temp   65.7   71.3   68.4   -2.7   73.2   in 2018   64.2   in 2008  
Average Water Temp   66.7   72.4   70.1   -3.4   74.0   in 2018   66.7   in 2020  
Sunrise/ AM Twilight   5:59:04 AM   5:29:48 AM            
Sunset / PM Twilight   7:38:17 PM   8:07:33 PM            
Length Of Day   13:39:13                          
Special Conditions   None                                  
Comments      
    August 19, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   83.3   81.7   78.8   +4.4   84.6   in 1944   72.4   in 1964  
Avg Minimum Temperature   67.9   65.4   64.4   +3.5   70.5   in 1988   56.0   in 1964  
Average Temperature   75.8   73.8   71.6   +4.2   77.5   in 1988   64.5   in 1964  
Total Precipitation   1.06   .91   2.25   -1.19   9.62   in 1946   .15   in 1956  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   0   0   +0   24   in 1964   0   in 2020  
Total CDD   205   168   136   +69   237   in 1988   15   in 1964  
Avg Maximum Dew Point   71.5   69.1   67.8   +3.8   73.9   in 2018   57.9   in 1964  
Avg Minimum Dew Point   63.7   60.5   59.7   +4.1   67.6   in 2018   47.4   in 1964  
Average  Dew Point   67.6   64.8   63.7   +3.9   70.7   in 2018   52.7   in 1964  
    August 19, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   23.44   36.14   30.06   -6.62   43.94   in 1983   15.70   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   24   in 1964   0   in 2020  
Total CDD (since Jan 1)   669   588   440   +229   669   in 2020   210   in 1902  
                             
Hour-by-Hour Weather For August 19, 2020  
Climate Weather for August 19  
Weather History For August 19  
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