Portsmouth Rhode Island Weather Almanac
Sunday, August 11, 2019
Clear to Partly Cloudy PM, Cooler and Very Comfortable
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    August 11, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   80   75   79   +1   94   in 1944   65   in 1922  
Minimum Temperature   59   71   64   -5   74   in 1988   53   in 1972  
Average Temperature   70   73   72   -2   83   in 1900   62   in 1922  
Precipitation   .00   .06   .12   -.12   2.14   in 1898            
One Hour   .00   .02           .61   in 2015            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   0   0   0   +0   3   in 1922   0   in 2019  
CDD   5   8   7   -2   18   in 1900   0   in 1994  
Maximum Dew Point   60   72   68   -8   77   in 2016   52   in 1974  
Minimum Dew Point   52   68   60   -8   73   in 1988   41   in 1968  
Average  Dew Point   56   70   64   -8   75   in 2016   50   in 1974  
Maximum Humidity   83%   99%   94%   -11%   100%   in 2017   81%   in 1967  
Minimum Humidity   42%   87%   61%   -19%   91%   in 1990   32%   in 2017  
Average Humidity   63%   93%   78%   -15%   96%   in 1990   60%   in 1974  
Maximum Barometer   29.99   30.01   30.03   -00.04   30.45   in 1940   29.66   in 1954  
Minimum Barometer   29.90   29.91   29.83   +00.07   30.13   in 1994   29.51   in 1992  
Average Barometer   29.95   29.96   29.93   +00.02   30.21   in 1989   29.62   in 1954  
Average Wind   6.8   3.2   5.5   +1.3   12.3   in 1971   2.4   in 2017  
Direction   NW   ESE   S       SW         SSE        
High Wind Gust   18   11   20   -2   35   in 1986   10   in 1951  
Direction   WNW   E   S       WSW         SE        
High Heat Index   79   78   81   -2   103   in 1988            
Wind Chill                                      
Maximum Water Temp   74.2   76.3   72.3   +1.9   76.3   in 2018   68.3   in 2006  
Minimum Water Temp   71.5   74.8   68.7   +2.8   74.8   in 2018   63.7   in 2001  
Average Water Temp   72.9   75.6   70.5   +2.4   75.6   in 2018   66.4   in 2006  
Sunrise/ AM Twilight   5:50:55 AM   5:20:55 AM            
Sunset / PM Twilight   7:49:43 PM   8:19:44 PM            
Length Of Day   13:58:48                          
Special Conditions   None                                  
Comments      
    August 11, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   82.4   83.6   79.0   +3.4   84.9   in 1980   71.0   in 1903  
Avg Minimum Temperature   65.2   70.5   65.0   +0.2   71.8   in 1988   55.5   in 1964  
Average Temperature   73.8   77.0   72.0   +1.8   78.2   in 1988   64.0   in 1964  
Total Precipitation   .19   1.54   1.29   -1.10   6.70   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   99   135   84   +15   149   in 1988   7   in 1964  
Avg Maximum Dew Point   67.9   74.3   68.7   -0.8   74.3   in 2018   58.0   in 1964  
Avg Minimum Dew Point   58.9   67.8   60.5   -1.6   69.3   in 2003   47.3   in 1964  
Average  Dew Point   63.4   71.0   64.6   -1.2   71.3   in 2003   52.6   in 1964  
    August 11, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   35.42   26.67   28.97   +6.45   41.98   in 1998   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)   519   463   388   +131   571   in 2010   201   in 1902  
                             
Hour-by-Hour Weather For August 11, 2019  
Climate Weather for August 11  
Weather History For August 11  
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