Portsmouth Rhode Island Weather Almanac
Saturday, August 15, 2020
Partly Cloudy early then Cloudy, Seasonal Temperatures
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    August 15, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   75   83   79   -4   91   in 1928   65   in 1905  
Minimum Temperature   66   64   64   +2   74   in 2016   53   in 1964  
Average Temperature   71   74   71   +0   81   in 2016   61   in 1992  
Precipitation   .00   .00   .12   -.12   2.69   in 1973            
One Hour   .00   .00           1.17   in 2012            
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 1992   0   in 2020  
CDD   6   9   7   -1   16   in 2016   0   in 1992  
Maximum Dew Point   67   68   67   +0   76   in 1959   46   in 1964  
Minimum Dew Point   62   61   59   +3   70   in 1989   40   in 1968  
Average  Dew Point   65   65   63   +2   72   in 1989   43   in 1964  
Maximum Humidity   91%   96%   92%   -1%   100%   in 2005   56%   in 1968  
Minimum Humidity   76%   58%   61%   +15%   92%   in 1973   33%   in 1968  
Average Humidity   84%   77%   77%   +7%   96%   in 1973   45%   in 1968  
Maximum Barometer   30.06   30.06   30.07   -00.01   30.40   in 1946   29.80   in 1953  
Minimum Barometer   29.95   29.95   29.88   +00.07   30.17   in 2002   29.48   in 1988  
Average Barometer   30.01   30.01   29.97   +00.03   30.21   in 2004   29.67   in 1953  
Average Wind   7.5   5.0   6.0   +1.5   12.4   in 1988   2.1   in 1989  
Direction   NNE   NNE   SSW       WSW         SW        
High Wind Gust   26   17   21   +5   38   in 1961   11   in 2017  
Direction   NNE   SE   SW       S         SSE        
High Heat Index   76   85   80   -4   94   in 1985            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   68.0   73.3   71.7   -3.7   76.0   in 2003   68.0   in 2020  
Minimum Water Temp   65.7   71.3   68.6   -2.9   73.9   in 2018   64.8   in 2004  
Average Water Temp   66.9   72.3   70.1   -3.3   74.8   in 2018   66.5   in 2004  
Sunrise/ AM Twilight   5:55:00 AM   5:25:22 AM            
Sunset / PM Twilight   7:44:08 PM   8:13:46 PM            
Length Of Day   13:49:08                          
Special Conditions   None                                  
Comments      
    August 15, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   84.7   81.8   79.0   +5.7   84.9   in 1944   72.3   in 1964  
Avg Minimum Temperature   69.1   65.1   64.7   +4.4   72.3   in 1988   55.6   in 1964  
Average Temperature   77.1   73.7   71.9   +5.3   78.9   in 1988   64.3   in 1964  
Total Precipitation   .55   .66   1.77   -1.22   7.15   in 1946   .07   in 1940  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   0   0   +0   21   in 1964   0   in 2020  
Total CDD   182   131   112   +70   208   in 1988   11   in 1964  
Avg Maximum Dew Point   72.9   68.0   68.2   +4.7   74.2   in 2018   57.4   in 1964  
Avg Minimum Dew Point   64.7   59.3   60.1   +4.6   68.3   in 2003   46.7   in 1964  
Average  Dew Point   68.8   63.6   64.2   +4.7   71.0   in 2018   52.1   in 1964  
    August 15, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   22.93   35.89   29.58   -6.65   43.87   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   21   in 1964   0   in 2020  
Total CDD (since Jan 1)   646   551   416   +230   646   in 2020   208   in 1902  
                             
Hour-by-Hour Weather For August 15, 2020  
Climate Weather for August 15  
Weather History For August 15  
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