Portsmouth Rhode Island Weather Almanac
Friday, September 27, 2019
Clear, Light Fog early and Warm
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    September 27, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   73   71   68   +5   82   in 2014   54   in 1893  
Minimum Temperature   54   58   53   +1   66   in 2007   36   in 1957  
Average Temperature   64   65   61   +3   72   in 2017   48   in 1957  
Precipitation   .00   .10   .13   -.13   1.49   in 1962            
One Hour   .00   .10           .29   in 1998            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   1   0   5   -4   17   in 1957   0   in 2018  
CDD   0   0   1   -1   7   in 2017   0   in 2019  
Maximum Dew Point   57   69   57   -0   76   in 2017   29   in 1957  
Minimum Dew Point   44   50   48   -4   65   in 1993   17   in 1957  
Average  Dew Point   51   60   53   -2   70   in 2017   23   in 1957  
Maximum Humidity   96%   96%   93%   +3%   100%   in 2017   59%   in 1957  
Minimum Humidity   37%   49%   61%   -24%   97%   in 1993   26%   in 1957  
Average Humidity   67%   73%   77%   -10%   99%   in 1993   43%   in 1957  
Maximum Barometer   30.16   30.16   30.13   +00.03   30.48   in 2015   29.76   in 1977  
Minimum Barometer   29.92   29.91   29.89   +00.03   30.33   in 1996   28.81   in 1985  
Average Barometer   30.04   30.04   30.01   +00.03   30.40   in 2015   29.54   in 1985  
Average Wind   5.0   8.0   6.1   -1.1   23.8   in 1985   1.0   in 1990  
Direction   NNW   NNE   SSW       S         ESE        
High Wind Gust   17   25   22   -5   77   in 1985   9   in 2017  
Direction   NW   NNE   SSW       S         SSE        
High Heat Index   72   73   69   +3   85   in 2017            
Wind Chill                                      
Maximum Water Temp   67.5   66.9   66.8   +0.7   70.0   in 2003   63.0   in 1996  
Minimum Water Temp   66.2   65.3   64.9   +1.3   67.2   in 2003   61.0   in 2000  
Average Water Temp   66.9   66.1   65.8   +1.0   68.6   in 2003   62.5   in 2000  
Sunrise/ AM Twilight   6:38:42 AM   6:11:12 AM            
Sunset / PM Twilight   6:33:11 PM   7:00:42 PM            
Length Of Day   11:54:29                          
Special Conditions   Light Fog                              
Comments      
    September 27, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   74.8   73.7   72.2   +2.6   78.7   in 1961   67.6   in 1963  
Avg Minimum Temperature   56.9   61.5   56.9   -0.1   63.2   in 1961   52.0   in 1956  
Average Temperature   65.8   67.6   64.6   +1.3   70.9   in 1961   60.1   in 1963  
Total Precipitation   1.57   5.09   3.51   -1.94   10.67   in 1961   .31   in 1959  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   35   34   63   -28   156   in 1956   5   in 1930  
Total CDD   63   110   57   +6   180   in 1961   7   in 1893  
Avg Maximum Dew Point   63.1   61.9   60.5   +2.6   67.0   in 1961   55.0   in 1966  
Avg Minimum Dew Point   52.8   50.3   51.4   +1.4   58.5   in 1961   44.4   in 1984  
Average  Dew Point   58.0   56.3   55.9   +2.0   62.8   in 1961   50.1   in 1984  
    September 27, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   39.40   33.93   35.00   +4.40   48.49   in 1998   17.64   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)   38   34   72   -34   187   in 1956   10   in 1930  
Total CDD (since Jan 1)   721   758   555   +166   797   in 2016   285   in 1902  
                             
Hour-by-Hour Weather For September 27, 2019  
Climate Weather for September 27  
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