Portsmouth Rhode Island Weather Almanac
Thursday, September 19, 2019
Clear, Light Winds and Continued Cool
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    September 19, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   70   71   71   -1   85   in 1946   60   in 1987  
Minimum Temperature   46   57   55   -9   68   in 2016   37   in 1956  
Average Temperature   58   64   63   -5   75   in 1906   50   in 1956  
Precipitation   .00   .01   .13   -.13   1.84   in 1972            
One Hour   .00   .01           .71   in 2006            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   7   1   3   +4   15   in 1956   0   in 2017  
CDD   0   0   1   -1   10   in 1906   0   in 2019  
Maximum Dew Point   53   67   59   -6   72   in 1991   42   in 1959  
Minimum Dew Point   43   55   50   -7   66   in 2016   26   in 1979  
Average  Dew Point   48   61   55   -7   69   in 2016   38   in 1959  
Maximum Humidity   93%   100%   94%   -1%   100%   in 2018   78%   in 1982  
Minimum Humidity   47%   78%   60%   -13%   96%   in 1989   33%   in 1959  
Average Humidity   70%   89%   77%   -7%   98%   in 1989   57%   in 1982  
Maximum Barometer   30.36   30.08   30.15   +00.21   30.58   in 1939   29.81   in 1976  
Minimum Barometer   30.26   29.76   29.93   +00.33   30.36   in 2008   29.30   in 1981  
Average Barometer   30.31   29.92   30.04   +00.27   30.43   in 2008   29.60   in 1981  
Average Wind   5.3   7.0   6.0   -0.7   14.7   in 1987   2.2   in 2005  
Direction   N   NNE   NNE       NNE         SSW        
High Wind Gust   17   23   21   -4   43   in 1936   12   in 1999  
Direction   NNE   ENE   NNE       E         SE        
High Heat Index   68   71   71   -3   86   in 1983            
Wind Chill                                      
Maximum Water Temp   67.3   70.7   67.9   -0.6   71.1   in 2015   64.6   in 1996  
Minimum Water Temp   66.2   69.5   65.7   +0.5   69.5   in 2018   62.6   in 1996  
Average Water Temp   66.8   70.1   66.9   -0.1   70.1   in 2018   63.6   in 1996  
Sunrise/ AM Twilight   6:30:28 AM   6:02:53 AM            
Sunset / PM Twilight   6:46:59 PM   7:14:35 PM            
Length Of Day   12:16:31                          
Special Conditions   None                                  
Comments      
    September 19, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   74.0   75.7   73.4   +0.6   81.1   in 1983   68.7   in 1913  
Avg Minimum Temperature   56.6   63.5   58.2   -1.6   64.2   in 1915   52.8   in 1984  
Average Temperature   65.3   69.6   65.8   -0.5   72.1   in 1961   61.5   in 1913  
Total Precipitation   .64   3.54   2.47   -1.83   7.93   in 1932   .06   in 1946  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   31   10   31   +0   90   in 1913   0   in 2015  
Total CDD   41   102   49   -8   153   in 1961   7   in 1975  
Avg Maximum Dew Point   62.8   60.8   61.5   +1.3   68.5   in 2015   55.0   in 1984  
Avg Minimum Dew Point   52.6   49.6   52.5   +0.2   60.3   in 2015   44.2   in 1984  
Average  Dew Point   57.7   55.5   57.0   +0.7   64.4   in 2015   49.6   in 1984  
    September 19, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   38.47   32.38   33.96   +4.51   46.35   in 1998   17.53   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)   34   10   40   -6   102   in 1956   0   in 2015  
Total CDD (since Jan 1)   699   750   547   +152   772   in 2016   280   in 1902  
                             
Hour-by-Hour Weather For September 19, 2019  
Climate Weather for September 19  
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