Portsmouth Rhode Island Weather Almanac
Sunday, September 29, 2019
Partly Cloudy, Breezy and Continued Warm
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    September 29, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   76   72   68   +8   80   in 1952   55   in 1936  
Minimum Temperature   55   53   52   +3   66   in 2015   35   in 1957  
Average Temperature   66   63   60   +6   73   in 1959   46   in 1914  
Precipitation   .00   .00   .13   -.13   2.82   in 2004            
One Hour   .00   .00           .58   in 1974            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   0   2   6   -6   19   in 1914   0   in 2019  
CDD   1   0   1   +0   8   in 1959   0   in 2018  
Maximum Dew Point   67   62   57   +10   71   in 2015   33   in 1981  
Minimum Dew Point   49   52   47   +2   66   in 1959   26   in 1981  
Average  Dew Point   58   57   52   +6   68   in 2015   30   in 1981  
Maximum Humidity   94%   96%   92%   +2%   100%   in 2006   68%   in 1981  
Minimum Humidity   56%   64%   58%   -2%   92%   in 2011   29%   in 1957  
Average Humidity   75%   80%   75%   -0%   95%   in 2012   49%   in 1957  
Maximum Barometer   30.32   30.25   30.13   +00.19   30.57   in 1988   29.61   in 1966  
Minimum Barometer   30.07   30.11   29.89   +00.18   30.30   in 2000   29.18   in 1963  
Average Barometer   30.20   30.18   30.01   +00.19   30.39   in 1988   29.49   in 1997  
Average Wind   7.0   4.7   6.6   +0.4   16.5   in 2001   3.0   in 1965  
Direction   N   W   N       NNE         NNW        
High Wind Gust   24   13   23   +1   38   in 1989   13   in 2018  
Direction   N   NW   N       SW         NW        
High Heat Index   76   72   68   +8   82   in 1959            
Wind Chill                                      
Maximum Water Temp   67.4   66.0   66.0   +1.4   68.9   in 2015   63.0   in 2010  
Minimum Water Temp   66.1   64.4   64.4   +1.7   67.5   in 2003   60.0   in 2004  
Average Water Temp   66.8   65.2   65.2   +1.5   68.1   in 2003   61.7   in 2000  
Sunrise/ AM Twilight   6:40:48 AM   6:13:17 AM            
Sunset / PM Twilight   6:29:46 PM   6:57:17 PM            
Length Of Day   11:48:58                          
Special Conditions   Fog                                  
Comments      
    September 29, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   74.8   73.1   71.9   +2.9   78.2   in 1961   67.7   in 1963  
Avg Minimum Temperature   56.8   61.0   56.6   +0.2   62.8   in 1961   52.0   in 1956  
Average Temperature   65.8   67.1   64.3   +1.6   70.5   in 1961   60.2   in 1963  
Total Precipitation   1.57   6.49   3.77   -2.20   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   43   74   -39   172   in 1956   12   in 1921  
Total CDD   65   110   59   +6   186   in 1961   7   in 1893  
Avg Maximum Dew Point   63.3   62.4   60.2   +3.1   66.1   in 2005   54.8   in 1966  
Avg Minimum Dew Point   52.8   51.1   51.1   +1.7   57.3   in 1961   44.2   in 1984  
Average  Dew Point   58.1   57.0   55.7   +2.4   61.6   in 1961   49.6   in 1984  
    September 29, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   39.40   35.33   35.26   +4.14   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   43   83   -45   203   in 1956   19   in 1930  
Total CDD (since Jan 1)   723   758   557   +166   797   in 2016   288   in 1902  
                             
Hour-by-Hour Weather For September 29, 2019  
Climate Weather for September 29  
Weather History For September 29  
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