Portsmouth Rhode Island Weather Almanac  
Friday, September 8, 2023  
Mostly Cloudy & Fog early, Cloudy Day to Mostly Cloudy PM, Cooler but still Very Muggy  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    September 8, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   82   74   74   +8   88   in 1945   62   in 1932  
Minimum Temperature   72   59   59   +13   72   in 2023   46   in 1952  
Average Temperature   77   67   67   +10   79   in 2015   56   in 1952  
 Month Avg Max Temperature   83.4   75.6   75.5   +7.9   85.0   in 1983   68.3   in 1994  
Month Avg Min Temperature   65.1   60.0   60.5   +4.6   69.3   in 1898   51.4   in 1893  
Month Average Temperature   74.4   68.0   68.0   +6.4   76.8   in 1898   61.4   in 1994  
High Heat Index   92   75   75   +17   93   in 2015            
Low Wind Chill                             43   in 1952  
Heating Degree Days   0   0   1   -1   9   in 1952   0   in 2023  
Month Heating DD   1   2   8   -7   33   in 1994   0   in 2021  
Season Heating DD   1   2   8   -7   49   in 1994   0   in 2020  
Cooling Degree Days   12   2   3   +9   14   in 2015   0   in 2018  
Month Cooling DD   76   26   30   +46   94   in 1898   0   in 1893  
Year Cooling DD   648   737   567   +81   819   in 2020   276   in 1902  
Maximum Dew Point   79   64   64   +15   79   in 2023   48   in 1980  
Minimum Dew Point   71   57   55   +16   71   in 2023   37   in 1955  
Average  Dew Point   75   61   60   +15   75   in 2023   44   in 1980  
 Month Avg Max Dew Point   72.9   64.5   65.1   +7.8   72.9   in 2023   52.9   in 1984  
Month Avg Min Dew Point   63.6   55.4   56.1   +7.5   64.3   in 1959   43.6   in 1984  
Month Average Dew Point   68.4   60.3   60.6   +7.8   68.4   in 2023   48.3   in 1984  
Precipitation   .00   .00   .12   -.12   1.84   in 2011            
One Hour Rain   .00   .00           .69   in 2011            
Half Hour Rain   .00   .00           .67   in 2011            
Hourly Rain Rate   .00   .00           5.94   in 2011            
Month Precipitation   .00   1.08   .90   -.90   6.53   in 2021   .00   in 2023  
Year Precipitation   35.62   26.50   30.18   +5.44   46.33   in 1998   16.94   in 1957  
Snow                                      
Snow Depth                                      
Month Snow                                      
Season Snow   0.0   0.0   0.0   +0.0   0.0   in 1996   0.0   in 1998  
    September 8, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   98%   92%   +7%   100%   in 2006   60%   in 1983  
Minimum Humidity   88%   63%   59%   +29%   96%   in 1993   30%   in 1980  
Average Humidity   94%   81%   76%   +18%   98%   in 1993   48%   in 1983  
Maximum Barometer   30.06   29.95   30.12   -00.06   30.54   in 1984   29.59   in 1998  
Minimum Barometer   29.88   29.88   29.93   -00.05   30.27   in 1984   29.47   in 1998  
Average Barometer   29.97   29.92   30.02   -00.05   30.41   in 1984   29.53   in 1998  
Average Wind   6.7   8.3   5.6   +1.1   10.2   in 1981   1.0   in 1989  
Direction   SSW   NNE   S       S SW
High Wind Gust   19   22   20   -1   47   in 1932   11   in 2009  
Direction   S   NE   S       N WNW
Maximum Water Temp   71.2   71.8   70.4   +0.8   74.3   in 2015   66.2   in 2017  
Minimum Water Temp   70.3   69.4   68.2   +2.1   72.3   in 2023   64.3   in 2017  
Average Water Temp   70.8   70.6   69.3   +1.5   73.2   in 2023   65.3   in 2017  
Sunrise/ AM Twilight   6:18:01 AM   5:50:58 AM            
Sunset / PM Twilight   7:06:45 PM   7:34:34 PM            
Length Of Day   12:48:44                          
Special Conditions   Fog                                  
Comments   Record High Dew Points  
Hour-by-Hour Weather For September 8, 2023            
Climate Weather for September 8            
Weather History For September 8            
Weather Calendar            
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