Portsmouth Rhode Island Weather Almanac
Friday, September 6, 2019
Mostly Cloudy early then Cloudy, PM Rain/Fog, Windy, Hurricane Dorian (Cat 1) SE, Windy & Much Cooler
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    September 6, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   66   86   75   -9   87   in 1983   58   in 1963  
Minimum Temperature   55   72   59   -4   72   in 2018   47   in 1902  
Average Temperature   61   79   67   -6   79   in 2018   56   in 1963  
Precipitation   .07   .10   .13   -.06   1.71   in 2011            
One Hour   .05   .05           .84   in 1979            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   4   0   1   +3   9   in 1963   0   in 2018  
CDD   0   14   3   -3   14   in 2018   0   in 2019  
Maximum Dew Point   60   77   63   -3   77   in 2018   45   in 1984  
Minimum Dew Point   51   70   54   -3   71   in 1953   38   in 1984  
Average  Dew Point   56   74   58   -2   74   in 2018   42   in 1984  
Maximum Humidity   94%   97%   93%   +1%   100%   in 2017   73%   in 1970  
Minimum Humidity   69%   74%   60%   +9%   93%   in 2008   36%   in 2002  
Average Humidity   82%   86%   76%   +5%   96%   in 2008   58%   in 1984  
Maximum Barometer   30.06   30.20   30.12   -00.06   30.57   in 1992   29.88   in 1994  
Minimum Barometer   29.69   30.04   29.91   -00.22   30.40   in 2000   29.24   in 1979  
Average Barometer   29.88   30.12   30.02   -00.14   30.45   in 2000   29.61   in 1979  
Average Wind   9.9   6.1   5.8   +4.1   13.5   in 1979   1.3   in 1965  
Direction   NE   SW   NE       S         SSE        
High Wind Gust   27   26   20   +7   46   in 1979   10   in 1989  
Direction   NE   WNW   NE       SSW         NE        
High Heat Index   66   95   76   -10   95   in 2018            
Wind Chill                                      
Maximum Water Temp   70.3   74.2   70.2   +0.1   74.2   in 2018   66.9   in 2017  
Minimum Water Temp   68.4   71.9   67.6   +0.8   71.9   in 2018   64.9   in 2000  
Average Water Temp   69.4   73.1   68.9   +0.5   73.1   in 2018   66.1   in 2017  
Sunrise/ AM Twilight   6:17:19 AM   5:49:16 AM            
Sunset / PM Twilight   7:09:19 PM   7:37:22 PM            
Length Of Day   12:52:00                          
Special Conditions   Fog                                  
Comments      
    September 6, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   75.0   82.0   75.3   -0.3   86.2   in 1898   66.8   in 1994  
Avg Minimum Temperature   59.0   67.0   60.2   -1.2   70.5   in 1898   51.5   in 1893  
Average Temperature   67.0   74.5   67.8   -0.8   78.3   in 1898   60.6   in 1994  
Total Precipitation   .07   .10   .78   -.71   4.18   in 1905   .00   in 2015  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   4   0   6   -2   29   in 1994   0   in 2018  
Total CDD   17   58   23   -6   82   in 1898   0   in 1976  
Avg Maximum Dew Point   66.0   60.2   63.3   +2.8   73.2   in 1973   54.3   in 1984  
Avg Minimum Dew Point   55.5   49.8   54.2   +1.3   67.0   in 1973   44.3   in 1984  
Average  Dew Point   60.8   55.3   58.7   +2.0   70.1   in 1973   49.3   in 1984  
    September 6, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   37.90   28.94   32.27   +5.63   45.30   in 1998   16.55   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)   7   0   15   -8   45   in 1994   0   in 2018  
Total CDD (since Jan 1)   675   706   521   +154   739   in 2010   272   in 1902  
                             
Hour-by-Hour Weather For September 6, 2019  
Climate Weather for September 6  
Weather History For September 6  
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