Portsmouth Rhode Island Weather Almanac
Wednesday, September 25, 2019
Clear, Light Winds and Mild
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    September 25, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   74   70   69   +5   86   in 1920   57   in 1977  
Minimum Temperature   54   52   53   +1   67   in 2011   40   in 1963  
Average Temperature   64   61   61   +3   75   in 1926   50   in 1950  
Precipitation   .00   1.28   .13   -.13   2.44   in 1991            
One Hour   .00   .30           .64   in 1961            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   1   4   4   -3   15   in 1950   0   in 2017  
CDD   0   0   1   -1   10   in 1926   0   in 2019  
Maximum Dew Point   60   70   58   +2   71   in 2011   38   in 1950  
Minimum Dew Point   50   47   48   +2   66   in 2011   28   in 1950  
Average  Dew Point   55   59   53   +2   69   in 2011   33   in 1950  
Maximum Humidity   94%   100%   92%   +2%   100%   in 2018   74%   in 1964  
Minimum Humidity   50%   83%   57%   -7%   93%   in 2001   29%   in 1963  
Average Humidity   72%   92%   75%   -3%   97%   in 2001   55%   in 1950  
Maximum Barometer   29.90   30.57   30.16   -00.26   30.57   in 2018   29.85   in 1969  
Minimum Barometer   29.81   30.16   29.94   -00.13   30.40   in 2008   29.43   in 1991  
Average Barometer   29.86   30.37   30.05   -00.20   30.45   in 2008   29.66   in 1991  
Average Wind   5.3   10.4   6.1   -0.8   13.4   in 1958   1.1   in 1994  
Direction   NW   ENE   NW       SSW         S        
High Wind Gust   15   30   21   -6   44   in 1991   8   in 1994  
Direction   NW   SSE   NW       SW         N        
High Heat Index   73   73   69   +4   83   in 2017            
Wind Chill                                      
Maximum Water Temp   67.8   67.6   66.8   +1.0   68.8   in 2003   64.0   in 1997  
Minimum Water Temp   66.3   65.5   65.0   +1.3   66.9   in 2003   61.7   in 1997  
Average Water Temp   67.1   66.6   65.9   +1.2   67.9   in 2003   62.9   in 1997  
Sunrise/ AM Twilight   6:36:38 AM   6:09:07 AM            
Sunset / PM Twilight   6:36:37 PM   7:04:08 PM            
Length Of Day   11:59:59                          
Special Conditions   None                                  
Comments      
    September 25, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   74.8   73.7   72.5   +2.3   79.1   in 1983   67.5   in 1963  
Avg Minimum Temperature   57.0   61.3   57.2   -0.3   63.4   in 1961   51.9   in 1962  
Average Temperature   65.9   67.5   64.9   +1.0   71.1   in 1961   60.1   in 1963  
Total Precipitation   1.10   4.82   3.25   -2.15   10.15   in 1961   .31   in 1959  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   34   34   53   -19   132   in 1963   5   in 1930  
Total CDD   61   103   55   +6   171   in 1961   7   in 1893  
Avg Maximum Dew Point   63.2   61.9   60.7   +2.5   67.4   in 1961   55.8   in 1967  
Avg Minimum Dew Point   53.1   50.4   51.6   +1.4   59.1   in 1961   45.2   in 1967  
Average  Dew Point   58.1   56.4   56.2   +1.9   63.3   in 1961   50.5   in 1967  
    September 25, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   38.93   33.66   34.74   +4.19   48.03   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)   37   34   62   -25   159   in 1956   7   in 2015  
Total CDD (since Jan 1)   719   751   553   +166   796   in 2016   283   in 1902  
                             
Hour-by-Hour Weather For September 25, 2019  
Climate Weather for September 25  
Weather History For September 25  
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