Portsmouth Rhode Island Weather Almanac
Tuesday, September 3, 2019
Partly Cloudy and Light Fog early then Clear and Warmer
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    September 3, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   80   83   75   +5   93   in 1929   65   in 1943  
Minimum Temperature   64   69   60   +4   72   in 1973   45   in 1893  
Average Temperature   72   76   68   +4   82   in 1929   57   in 1893  
Precipitation   .00   .00   .13   -.13   2.87   in 1972            
One Hour   .00   .00           .52   in 2010            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   0   0   1   -1   8   in 1893   0   in 2019  
CDD   7   11   4   +3   17   in 1929   0   in 2017  
Maximum Dew Point   68   75   63   +5   76   in 2010   48   in 1960  
Minimum Dew Point   61   68   54   +7   72   in 1959   39   in 1967  
Average  Dew Point   65   72   59   +6   74   in 1959   45   in 1960  
Maximum Humidity   95%   94%   93%   +2%   100%   in 2017   71%   in 1953  
Minimum Humidity   55%   74%   60%   -5%   95%   in 1986   33%   in 1960  
Average Humidity   75%   84%   76%   -1%   98%   in 1986   54%   in 1960  
Maximum Barometer   30.07   30.27   30.10   -00.03   30.48   in 1986   29.74   in 1957  
Minimum Barometer   29.95   30.17   29.88   +00.07   30.24   in 1994   29.32   in 2010  
Average Barometer   30.01   30.22   29.99   +00.02   30.30   in 1994   29.63   in 2010  
Average Wind   5.3   6.0   5.9   -0.6   17.9   in 1972   1.2   in 2009  
Direction   SSE   SW   SW       NNE         SE        
High Wind Gust   16   20   20   -4   48   in 1972   10   in 1976  
Direction   NNW   SSW   SW       NNE         S        
High Heat Index   82   90   77   +5   101   in 1973            
Wind Chill                                      
Maximum Water Temp   70.4   73.6   70.4   -0.0   75.2   in 2010   65.8   in 2017  
Minimum Water Temp   68.7   71.1   68.0   +0.7   71.1   in 2018   64.1   in 2017  
Average Water Temp   69.6   72.4   69.2   +0.4   72.4   in 2018   65.0   in 2017  
Sunrise/ AM Twilight   6:14:17 AM   5:46:05 AM            
Sunset / PM Twilight   7:14:22 PM   7:42:34 PM            
Length Of Day   13:00:05                          
Special Conditions   Light Fog                              
Comments      
    September 3, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   77.3   79.0   75.7   +1.7   90.3   in 1929   66.3   in 2003  
Avg Minimum Temperature   59.7   63.3   60.7   -1.0   72.3   in 1959   50.0   in 2017  
Average Temperature   68.5   71.2   68.2   +0.3   80.0   in 1898   58.8   in 2017  
Total Precipitation   .00   .00   .39   -.39   2.97   in 1972   .00   in 2018  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   0   3   -3   18   in 2017   0   in 2019  
Total CDD   11   19   12   -1   46   in 1898   0   in 2017  
Avg Maximum Dew Point   66.0   64.3   63.7   +2.3   74.3   in 1959   51.7   in 1970  
Avg Minimum Dew Point   57.0   52.3   54.7   +2.3   71.7   in 1959   39.7   in 1991  
Average  Dew Point   61.5   58.7   59.2   +2.3   73.0   in 1959   46.3   in 1970  
    September 3, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   37.83   28.84   31.88   +5.95   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)   3   0   12   -9   42   in 1905   0   in 2018  
Total CDD (since Jan 1)   669   667   510   +159   731   in 2010   267   in 1902  
                             
Hour-by-Hour Weather For September 3, 2019  
Climate Weather for September 3  
Weather History For September 3  
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