Portsmouth Rhode Island Weather Almanac
Thursday, August 15, 2019
Mostly Cloudy and Fog early, Partly Cloudy Day to Clear PM,  Warm and Light Winds
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    August 15, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   83   86   79   +4   91   in 1928   65   in 1905  
Minimum Temperature   64   70   64   +0   74   in 2016   53   in 1964  
Average Temperature   74   78   71   +3   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               in            
HDD   0   0   0   +0   4   in 1992   0   in 2019  
CDD   9   13   7   +2   16   in 2016   0   in 1992  
Maximum Dew Point   68   73   67   +1   76   in 1959   46   in 1964  
Minimum Dew Point   61   68   59   +2   70   in 1989   40   in 1968  
Average  Dew Point   65   71   63   +2   72   in 1989   43   in 1964  
Maximum Humidity   96%   94%   92%   +4%   100%   in 2005   56%   in 1968  
Minimum Humidity   58%   57%   61%   -3%   92%   in 1973   33%   in 1968  
Average Humidity   77%   76%   76%   +1%   96%   in 1973   45%   in 1968  
Maximum Barometer   30.06   29.94   30.07   -00.01   30.40   in 1946   29.80   in 1953  
Minimum Barometer   29.95   29.82   29.88   +00.07   30.17   in 2002   29.48   in 1988  
Average Barometer   30.01   29.88   29.97   +00.03   30.21   in 2004   29.67   in 1953  
Average Wind   5.0   4.6   6.0   -1.0   12.4   in 1988   2.1   in 1989  
Direction   NNE   W   SSW       WSW         SW        
High Wind Gust   17   15   21   -4   38   in 1961   11   in 2017  
Direction   SE   W   SSW       S         SSE        
High Heat Index   85   92   80   +5   94   in 1985            
Wind Chill                                      
Maximum Water Temp   73.3   75.7   71.8   +1.5   76.0   in 2003   68.1   in 2004  
Minimum Water Temp   71.3   73.9   68.7   +2.6   73.9   in 2018   64.8   in 2004  
Average Water Temp   72.3   74.8   70.3   +2.0   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   Fog                                  
Comments      
    August 15, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   81.8   82.8   79.0   +2.8   84.9   in 1944   72.3   in 1964  
Avg Minimum Temperature   65.1   70.4   64.7   +0.3   72.3   in 1988   55.6   in 1964  
Average Temperature   73.4   76.6   71.9   +1.6   78.5   in 1988   64.0   in 1964  
Total Precipitation   .66   2.64   1.77   -1.11   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 2019  
Total CDD   131   177   112   +19   208   in 1988   11   in 1964  
Avg Maximum Dew Point   68.0   74.2   68.2   -0.2   74.2   in 2018   57.4   in 1964  
Avg Minimum Dew Point   59.3   67.8   60.1   -0.8   68.3   in 2003   46.7   in 1964  
Average  Dew Point   63.7   71.0   64.2   -0.5   71.0   in 2018   52.1   in 1964  
    August 15, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   35.89   27.77   29.45   +6.44   43.87   in 1983   15.70   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   21   in 1964   0   in 2019  
Total CDD (since Jan 1)   551   505   416   +135   586   in 2010   208   in 1902  
                             
Hour-by-Hour Weather For August 15, 2019  
Climate Weather for August 15  
Weather History For August 15  
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