Portsmouth Rhode Island Weather Almanac
Friday, September 13, 2019
Clear and Cooler
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    September 13, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   71   71   73   -2   88   in 1952   60   in 1965  
Minimum Temperature   50   65   57   -7   70   in 1971   43   in 1943  
Average Temperature   61   68   65   -4   77   in 1961   55   in 1985  
Precipitation   .00   1.69   .13   -.13   2.42   in 1987            
One Hour   .00   1.52           1.52   in 2018            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   4   0   2   +2   10   in 1985   0   in 2018  
CDD   0   3   2   -2   12   in 1961   0   in 2019  
Maximum Dew Point   58   68   61   -3   73   in 1971   45   in 1985  
Minimum Dew Point   45   63   52   -7   68   in 1971   33   in 1985  
Average  Dew Point   52   66   56   -4   71   in 1971   39   in 1985  
Maximum Humidity   95%   100%   93%   +2%   100%   in 2018   68%   in 1955  
Minimum Humidity   42%   88%   57%   -15%   93%   in 1987   34%   in 1991  
Average Humidity   69%   94%   75%   -6%   97%   in 1987   52%   in 1955  
Maximum Barometer   30.50   30.31   30.13   +00.37   30.51   in 1985   29.65   in 1960  
Minimum Barometer   30.30   30.25   29.93   +00.37   30.33   in 1992   29.45   in 1960  
Average Barometer   30.40   30.28   30.03   +00.37   30.40   in 2019   29.55   in 1960  
Average Wind   7.2   4.0   5.8   +1.4   12.1   in 1974   1.1   in 2006  
Direction   N   NNE   S       WSW         W        
High Wind Gust   19   14   20   -1   35   in 1953   11   in 1998  
Direction   NE   NNE   S       SSE         NE        
High Heat Index   69   73   74   -5   92   in 1952            
Wind Chill                                      
Maximum Water Temp   69.4   71.1   68.9   +0.5   72.1   in 1999   65.5   in 2006  
Minimum Water Temp   68.2   69.0   66.8   +1.4   70.0   in 1999   62.9   in 2005  
Average Water Temp   68.8   70.1   67.9   +0.9   71.1   in 1999   64.7   in 2006  
Sunrise/ AM Twilight   6:24:23 AM   5:56:38 AM            
Sunset / PM Twilight   6:57:21 PM   7:25:07 PM            
Length Of Day   12:32:58                          
Special Conditions   None                                  
Comments      
    September 13, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   74.6   76.0   74.3   +0.3   84.5   in 1983   68.7   in 1917  
Avg Minimum Temperature   58.2   64.1   59.2   -0.9   66.9   in 1961   51.2   in 1893  
Average Temperature   66.4   70.2   66.7   -0.3   75.3   in 1961   61.6   in 1893  
Total Precipitation   .56   2.60   1.69   -1.13   5.17   in 1905   T   in 2005  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   12   9   17   -5   48   in 1914   0   in 2015  
Total CDD   33   82   42   -9   136   in 1961   0   in 1893  
Avg Maximum Dew Point   64.5   59.2   62.3   +2.3   70.4   in 1961   55.3   in 1967  
Avg Minimum Dew Point   54.5   47.9   53.3   +1.2   63.7   in 1961   43.7   in 1967  
Average  Dew Point   59.5   53.8   57.8   +1.7   67.0   in 1961   49.5   in 1967  
    September 13, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   38.39   31.44   33.18   +5.21   46.33   in 1998   17.36   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)   15   9   26   -11   88   in 1914   0   in 2015  
Total CDD (since Jan 1)   691   727   540   +151   752   in 2010   280   in 1902  
                             
Hour-by-Hour Weather For September 13, 2019  
Climate Weather for September 13  
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