Portsmouth Rhode Island Weather Almanac
Tuesday, September 8, 2020
Cloudy & Dense Fog early, Partly Cloudy Day to Mostly Cloudy PM, Light Winds, Warm and Humid
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    September 8, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   81   76   74   +7   88   in 1945   62   in 1932  
Minimum Temperature   63   60   59   +4   70   in 2015   46   in 1952  
Average Temperature   72   68   66   +6   79   in 2015   56   in 1952  
Precipitation   .00   .00   .13   -.13   1.84   in 2011            
One Hour   .00   .00           .69   in 2011            
Snow   #N/A   0.0   0.0   #N/A   0.0   in              
Snow Depth   #N/A   0           0   in            
HDD   0   0   1   -1   9   in 1952   0   in 2020  
CDD   7   3   3   +4   14   in 2015   0   in 2018  
Maximum Dew Point   70   59   62   +8   74   in 2012   48   in 1980  
Minimum Dew Point   62   54   53   +9   69   in 2004   37   in 1955  
Average  Dew Point   66   57   58   +9   71   in 2004   44   in 1980  
Maximum Humidity   98%   86%   92%   +6%   100%   in 2006   60%   in 1983  
Minimum Humidity   65%   51%   59%   +6%   96%   in 1993   30%   in 1980  
Average Humidity   82%   69%   75%   +6%   98%   in 1993   48%   in 1983  
Maximum Barometer   30.24   30.16   30.12   +00.12   30.54   in 1984   29.59   in 1998  
Minimum Barometer   30.10   29.85   29.93   +00.17   30.27   in 1984   29.47   in 1998  
Average Barometer   30.17   30.01   30.03   +00.14   30.41   in 1984   29.53   in 1998  
Average Wind   3.4   6.7   5.5   -2.1   10.2   in 1981   1.0   in 1989  
Direction   S   WNW   S       S         SW        
High Wind Gust   15   18   20   -5   47   in 1932   11   in 2009  
Direction   SW   NW   SW       N         WNW        
High Heat Index   84   76   75   +9   93   in 2015            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   72.1   69.6   70.2   +1.9   74.3   in 2015   66.2   in 2017  
Minimum Water Temp   69.4   68.3   67.9   +1.5   72.2   in 2012   64.3   in 2017  
Average Water Temp   70.8   69.0   69.0   +1.7   73.1   in 2012   65.3   in 2017  
Sunrise/ AM Twilight   6:19:52 AM   5:51:56 AM            
Sunset / PM Twilight   7:05:03 PM   7:32:59 PM            
Length Of Day   12:45:11                          
Special Conditions   Dense Fog                              
Comments      
    September 8, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   79.5   74.8   75.0   +4.5   85.0   in 1983   68.3   in 1994  
Avg Minimum Temperature   63.4   58.8   59.9   +3.5   69.3   in 1898   51.4   in 1893  
Average Temperature   71.6   66.9   67.4   +4.2   76.8   in 1898   61.4   in 1994  
Total Precipitation   .39   .08   1.04   -.65   4.18   in 1905   .00   in 2015  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   5   8   -8   33   in 1994   0   in 2020  
Total CDD   53   20   29   +24   94   in 1898   0   in 1893  
Avg Maximum Dew Point   67.6   64.4   63.0   +4.7   71.3   in 2014   52.9   in 1984  
Avg Minimum Dew Point   57.6   54.9   54.0   +3.7   64.3   in 1959   43.6   in 1984  
Average  Dew Point   62.8   59.9   58.5   +4.3   67.4   in 1959   48.3   in 1984  
    September 8, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   24.42   37.91   32.66   -8.24   46.33   in 1998   16.94   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)   0   5   17   -17   33   in 1994   0   in 2020  
Total CDD (since Jan 1)   819   678   527   +292   819   in 2020   276   in 1902  
                             
Hour-by-Hour Weather For September 8, 2020  
Climate Weather for September 8  
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