Portsmouth Rhode Island Weather Almanac
Friday, September 25, 2020
Clear & Light Fog early, Partly Cloudy Day to Mostly Cloudy , Fog & Haze PM, Light Winds, Much Warmer
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    September 25, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   81   74   69   +12   86   in 1920   57   in 1977  
Minimum Temperature   59   54   53   +6   67   in 2011   40   in 1963  
Average Temperature   70   64   61   +9   75   in 1926   50   in 1950  
Precipitation   .00   .00   .13   -.13   2.44   in 1991            
One Hour   .00   .00           .64   in 1961            
Snow   #N/A   0.0   0.0   #N/A   0.0   in              
Snow Depth   #N/A   0           0   in            
HDD   0   1   4   -4   15   in 1950   0   in 2020  
CDD   5   0   1   +4   10   in 1926   0   in 2019  
Maximum Dew Point   66   60   58   +8   71   in 2011   38   in 1950  
Minimum Dew Point   57   50   48   +9   66   in 2011   28   in 1950  
Average  Dew Point   62   55   53   +9   69   in 2011   33   in 1950  
Maximum Humidity   96%   94%   92%   +4%   100%   in 2018   74%   in 1964  
Minimum Humidity   50%   50%   57%   -7%   93%   in 2001   29%   in 1963  
Average Humidity   73%   72%   75%   -2%   97%   in 2001   55%   in 1950  
Maximum Barometer   30.13   29.90   30.16   -00.03   30.57   in 2018   29.85   in 1969  
Minimum Barometer   30.01   29.81   29.94   +00.07   30.40   in 2008   29.43   in 1991  
Average Barometer   30.07   29.86   30.05   +00.02   30.45   in 2008   29.66   in 1991  
Average Wind   4.8   5.3   6.1   -1.3   13.4   in 1958   1.1   in 1994  
Direction   SW   NW   NW       SSW         S        
High Wind Gust   17   15   21   -4   44   in 1991   8   in 1994  
Direction   SW   NW   SW       SW         N        
High Heat Index   82   73   69   +13   83   in 2017            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   67.5   67.8   66.8   +0.7   68.8   in 2003   64.0   in 1997  
Minimum Water Temp   65.1   66.3   65.0   +0.1   66.9   in 2003   61.7   in 1997  
Average Water Temp   66.3   67.1   65.9   +0.4   67.9   in 2003   62.9   in 1997  
Sunrise/ AM Twilight   6:37:10 AM   6:09:39 AM            
Sunset / PM Twilight   6:35:44 PM   7:03:15 PM            
Length Of Day   11:58:34                          
Special Conditions   Light Fog, Haze                              
Comments   15th Consecutive day without rain  
    September 25, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   74.6   74.8   72.5   +2.0   79.1   in 1983   67.5   in 1963  
Avg Minimum Temperature   56.9   57.0   57.2   -0.3   63.4   in 1961   51.9   in 1962  
Average Temperature   66.0   66.1   64.9   +1.2   71.2   in 1961   60.2   in 1963  
Total Precipitation   .66   1.10   3.25   -2.59   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   56   34   53   +3   132   in 1963   5   in 1930  
Total CDD   82   61   55   +27   171   in 1961   7   in 1893  
Avg Maximum Dew Point   61.5   63.2   60.7   +0.7   67.4   in 2018   55.8   in 1967  
Avg Minimum Dew Point   49.7   53.1   51.6   -1.9   59.1   in 1961   45.2   in 1967  
Average  Dew Point   55.8   58.4   56.2   -0.4   63.3   in 1961   50.5   in 1967  
    September 25, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   24.69   38.93   34.87   -10.18   48.03   in 1998   17.64   in 1957  
Total Snow (since Jul 1 20)   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD (since Jul 1 20)   56   34   62   -6   132   in 1963   5   in 1930  
Total CDD (since Jan 1)   848   719   553   +295   848   in 2020   283   in 1902  
                             
Hour-by-Hour Weather For September 25, 2020  
Climate Weather for September 25  
Weather History For September 25  
Weather Calendar  
Back To Weather Stat Page  
Home