Portsmouth Rhode Island Weather Almanac
Monday, August 12, 2019
Clear with Seasonal Temperatures
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    August 12, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   84   81   79   +5   92   in 1944   63   in 1979  
Minimum Temperature   61   71   64   -3   73   in 2016   51   in 1968  
Average Temperature   73   76   72   +1   82   in 1944   60   in 1979  
Precipitation   .00   T   .12   -.12   2.30   in 1983            
One Hour   .00   T           .92   in 1983            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   0   0   0   +0   5   in 1979   0   in 2019  
CDD   8   11   7   +1   17   in 1944   0   in 1983  
Maximum Dew Point   64   75   68   -4   77   in 2016   50   in 1968  
Minimum Dew Point   56   69   59   -3   71   in 2016   44   in 2006  
Average  Dew Point   60   72   63   -3   74   in 2016   47   in 1968  
Maximum Humidity   84%   100%   94%   -10%   100%   in 2018   63%   in 1950  
Minimum Humidity   45%   71%   61%   -16%   92%   in 1955   33%   in 1974  
Average Humidity   65%   86%   78%   -13%   96%   in 1955   52%   in 1950  
Maximum Barometer   29.99   30.08   30.05   -00.06   30.34   in 1986   29.77   in 2008  
Minimum Barometer   29.88   29.98   29.86   +00.02   30.17   in 1994   29.53   in 1964  
Average Barometer   29.94   30.03   29.96   -00.02   30.23   in 1994   29.68   in 1964  
Average Wind   5.3   4.8   5.6   -0.3   12.5   in 1979   1.8   in 1994  
Direction   SSW   E   SSW       NNE         SSE        
High Wind Gust   24   13   20   +4   34   in 1983   9   in 1951  
Direction   SSW   ENE   SSW       NNE         SE        
High Heat Index   84   83   80   +4   96   in 2016            
Wind Chill                                      
Maximum Water Temp   74.1   75.7   72.0   +2.1   77.0   in 2003   68.3   in 2017  
Minimum Water Temp   71.4   73.3   68.6   +2.8   73.8   in 2012   63.6   in 2004  
Average Water Temp   72.8   74.5   70.3   +2.4   75.0   in 2012   66.9   in 2017  
Sunrise/ AM Twilight   5:51:56 AM   5:22:02 AM            
Sunset / PM Twilight   7:48:21 PM   8:18:16 PM            
Length Of Day   13:56:25                          
Special Conditions   None                                  
Comments      
    August 12, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   82.5   83.4   79.0   +3.5   84.8   in 1980   71.5   in 1903  
Avg Minimum Temperature   64.8   70.5   64.9   -0.1   71.9   in 1988   56.3   in 1964  
Average Temperature   73.7   77.0   72.0   +1.7   78.3   in 1988   64.4   in 1964  
Total Precipitation   .19   1.54   1.41   -1.22   6.82   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 2019  
Total CDD   107   146   91   +16   163   in 1988   11   in 1964  
Avg Maximum Dew Point   67.6   74.3   68.6   -1.0   74.3   in 2018   58.9   in 1964  
Avg Minimum Dew Point   58.7   67.9   60.4   -1.8   69.4   in 2003   48.4   in 1964  
Average  Dew Point   63.1   71.1   64.5   -1.4   71.4   in 2003   53.7   in 1964  
    August 12, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   35.42   26.67   29.09   +6.33   43.87   in 1983   15.63   in 1957  
Total Snow (since Jul 1 19)   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD (since Jul 1 19)   0   0   0   +0   18   in 1903   0   in 2019  
Total CDD (since Jan 1)   527   474   395   +132   578   in 2010   203   in 1902  
                             
Hour-by-Hour Weather For August 12, 2019  
Climate Weather for August 12  
Weather History For August 12  
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