Portsmouth Rhode Island Weather Almanac
Sunday, September 22, 2019
Dense Fog early then Partly Cloudy,  Continued Warm
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    September 22, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   76   73   70   +6   88   in 1980   54   in 1904  
Minimum Temperature   62   58   54   +8   70   in 1989   36   in 1904  
Average Temperature   69   66   62   +7   78   in 1980   45   in 1904  
Precipitation   .00   .00   .13   -.13   1.86   in 1979            
One Hour   .00   .00           .58   in 1990            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   0   0   4   -4   20   in 1904   0   in 2019  
CDD   4   1   1   +3   13   in 1980   0   in 2017  
Maximum Dew Point   68   68   58   +10   71   in 2011   43   in 1955  
Minimum Dew Point   60   49   49   +11   68   in 1989   33   in 1962  
Average  Dew Point   64   59   54   +10   70   in 1989   38   in 1955  
Maximum Humidity   97%   92%   95%   +2%   100%   in 2017   78%   in 1955  
Minimum Humidity   72%   55%   61%   +11%   91%   in 2011   34%   in 1955  
Average Humidity   85%   74%   78%   +6%   95%   in 2011   56%   in 1955  
Maximum Barometer   30.20   30.23   30.11   +00.09   30.53   in 1929   29.73   in 1954  
Minimum Barometer   30.01   29.90   29.88   +00.13   30.29   in 1962   29.17   in 1966  
Average Barometer   30.11   30.07   29.99   +00.11   30.35   in 2008   29.51   in 1966  
Average Wind   6.0   9.5   6.6   -0.6   20.0   in 2017   2.0   in 2016  
Direction   S   NNE   SSW       NNE         N        
High Wind Gust   19   28   22   -3   43   in 2017   11   in 2016  
Direction   S   SSW   SSW       NNE         SE        
High Heat Index   78   73   71   +7   89   in 1980            
Wind Chill                                      
Maximum Water Temp   67.6   69.3   67.9   -0.3   71.2   in 2005   65.1   in 2017  
Minimum Water Temp   66.3   68.1   65.9   +0.4   68.6   in 2016   63.1   in 1997  
Average Water Temp   67.0   68.7   66.9   +0.0   69.5   in 2016   64.4   in 2017  
Sunrise/ AM Twilight   6:33:32 AM   6:06:00 AM            
Sunset / PM Twilight   6:41:47 PM   7:09:20 PM            
Length Of Day   12:08:15                          
Special Conditions   Dense Fog                              
Comments      
    September 22, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   74.6   74.9   73.0   +1.7   80.7   in 1983   68.5   in 1963  
Avg Minimum Temperature   56.5   62.6   57.7   -1.3   63.4   in 1961   52.7   in 1984  
Average Temperature   65.5   68.8   65.3   +0.2   71.4   in 1961   61.3   in 1963  
Total Precipitation   .64   3.54   2.86   -2.22   9.58   in 1960   .13   in 1946  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   33   15   41   -8   106   in 1956   4   in 2015  
Total CDD   49   103   52   -3   160   in 1961   7   in 1893  
Avg Maximum Dew Point   62.9   61.5   61.1   +1.7   67.3   in 2015   54.8   in 1984  
Avg Minimum Dew Point   52.6   50.1   52.1   +0.5   58.9   in 1971   44.0   in 1984  
Average  Dew Point   57.7   56.1   56.6   +1.1   63.0   in 1971   49.4   in 1984  
    September 22, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   38.47   32.38   34.35   +4.12   48.02   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)   36   15   50   -14   137   in 1956   4   in 2015  
Total CDD (since Jan 1)   707   751   550   +157   793   in 2016   282   in 1902  
                             
Hour-by-Hour Weather For September 22, 2019  
Climate Weather for September 22  
Weather History For September 22  
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