Portsmouth Rhode Island Weather Almanac  
Wednesday, August 9, 2023  
Mostly Cloudy early, P Cloudy Day to Clear PM, Breezy, Warm, Less Humid  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    August 9, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   82   88   79   +3   92   in 1980   66   in 1903  
Minimum Temperature   67   73   65   +2   73   in 2022   51   in 1955  
Average Temperature   75   81   72   +3   82   in 1980   63   in 1955  
 Month Avg Max Temperature   78.9   85.4   79.6   -0.7   86.9   in 1980   70.1   in 1903  
Month Avg Min Temperature   63.7   71.2   65.0   -1.3   71.2   in 2022   55.9   in 1964  
Month Average Temperature   71.6   78.7   72.0   -0.4   78.7   in 2022   64.2   in 1903  
High Heat Index   82   100   82   -0   100   in 2022            
Low Wind Chill                             48   in 1955  
Heating Degree Days   0   0   0   +0   2   in 1955   0   in 2023  
Month Heating DD   0   0   0   +0   18   in 1903   0   in 2023  
Season Heating DD   0   0   0   +0   18   in 1903   0   in 2023  
Cooling Degree Days   10   16   7   +3   17   in 1980   0   in 1964  
Month Cooling DD   59   123   70   -11   123   in 2022   6   in 1964  
Year Cooling DD   443   511   398   +45   569   in 2020   192   in 1902  
Maximum Dew Point   67   78   69   -2   78   in 2022   54   in 1964  
Minimum Dew Point   61   72   61   +0   72   in 2022   39   in 1964  
Average  Dew Point   64   75   65   -1   75   in 2022   47   in 1964  
 Month Avg Max Dew Point   67.2   76.0   69.0   -1.8   76.0   in 2022   57.8   in 1964  
Month Avg Min Dew Point   58.4   68.9   61.3   -2.9   69.2   in 2003   47.6   in 1964  
Month Average Dew Point   62.8   72.4   65.0   -2.2   72.4   in 2022   52.7   in 1964  
Precipitation   .00   .18   .12   -.12   5.58   in 1992            
One Hour Rain   .00   .16           .91   in 1992            
Half Hour Rain   .00   .16           .23   in 2013            
Hourly Rain Rate   .00   1.88           2.02   in 2013            
Month Precipitation   2.65   .33   1.07   +1.58   6.40   in 1946   .00   in 1998  
Year Precipitation   32.90   23.74   26.72   +6.18   41.55   in 1998   14.69   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  
    August 9, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   88%   99%   93%   -5%   100%   in 2003   74%   in 1971  
Minimum Humidity   53%   74%   59%   -6%   98%   in 1976   26%   in 1999  
Average Humidity   71%   87%   76%   -5%   99%   in 1976   56%   in 1979  
Maximum Barometer   29.74   29.94   30.03   -00.29   30.37   in 1998   29.69   in 2011  
Minimum Barometer   29.55   29.85   29.85   -00.30   30.24   in 1993   29.52   in 2011  
Average Barometer   29.65   29.90   29.94   -00.29   30.29   in 1993   29.61   in 2011  
Average Wind   9.3   8.0   5.8   +3.5   10.4   in 1982   2.0   in 1990  
Direction   WNW   SW   SW       S S
High Wind Gust   29   24   21   +8   37   in 1969   10   in 1997  
Direction   NW   SSW   SSW       SW W
Maximum Water Temp   71.4   75.6   72.2   -0.8   75.6   in 2022   68.2   in 2017  
Minimum Water Temp   70.3   73.6   69.3   +1.0   73.6   in 2022   65.4   in 2017  
Average Water Temp   70.9   74.6   70.7   +0.1   74.6   in 2022   66.8   in 2017  
Sunrise/ AM Twilight   5:47:27 AM   4:47:40 AM            
Sunset / PM Twilight   7:53:02 PM   8:53:40 PM            
Length Of Day   14:05:35                          
Special Conditions   None                              
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