Portsmouth Rhode Island Weather Almanac  
Thursday, August 24, 2023  
Partly Cloudy to Cloudy and Light Rain Late, Light Winds, Continued Cool  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    August 24, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   75   87   78   -3   89   in 1980   64   in 1945  
Minimum Temperature   58   68   63   -5   71   in 1998   46   in 1957  
Average Temperature   67   78   70   -3   79   in 2021   60   in 1957  
 Month Avg Max Temperature   78.5   83.1   78.9   -0.4   83.7   in 1939   72.9   in 1964  
Month Avg Min Temperature   63.6   67.0   64.1   -0.5   68.5   in 2018   56.6   in 1964  
Month Average Temperature   71.3   75.3   71.5   -0.2   76.0   in 1939   65.1   in 1964  
High Heat Index   76   92   78   -2   95   in 2021            
Low Wind Chill                             46   in 1956  
Heating Degree Days   0   0   0   +0   5   in 1957   0   in 2023  
Month Heating DD   0   0   0   +0   26   in 1964   0   in 2023  
Season Heating DD   0   0   0   +0   26   in 1964   0   in 2023  
Cooling Degree Days   2   13   5   -3   14   in 2021   0   in 2010  
Month Cooling DD   152   248   169   -17   264   in 1939   28   in 1964  
Year Cooling DD   536   636   497   +39   719   in 2020   216   in 1902  
Maximum Dew Point   64   72   67   -3   76   in 2021   43   in 1987  
Minimum Dew Point   57   67   58   -1   70   in 1998   36   in 1959  
Average  Dew Point   61   70   63   -2   73   in 2021   40   in 1987  
 Month Avg Max Dew Point   68.7   71.2   68.4   +0.3   72.4   in 2018   59.2   in 1964  
Month Avg Min Dew Point   59.1   63.6   60.2   -1.1   65.6   in 2018   48.8   in 1964  
Month Average Dew Point   63.9   67.4   64.3   -0.4   69.0   in 2018   54.0   in 1964  
Precipitation   .10   .00   .11   -.01   2.62   in 1927            
One Hour Rain   .08   .00           .78   in 1991            
Half Hour Rain   .06   .00           .20   in 2015            
Hourly Rain Rate   .16   .00           3.11   in 2015            
Month Precipitation   4.25   .81   2.86   +1.39   11.04   in 1946   .16   in 1993  
Year Precipitation   34.50   24.22   28.51   +5.99   43.94   in 1983   15.70   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 24, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   99%   91%   +8%   100%   in 2002   64%   in 2003  
Minimum Humidity   60%   57%   55%   +5%   91%   in 1961   29%   in 1995  
Average Humidity   80%   78%   73%   +6%   96%   in 1961   47%   in 2003  
Maximum Barometer   30.13   29.98   30.11   +00.02   30.47   in 1967   29.79   in 1963  
Minimum Barometer   30.04   29.84   29.90   +00.14   30.28   in 1967   29.45   in 1986  
Average Barometer   30.09   29.91   30.01   +00.08   30.38   in 1967   29.64   in 1986  
Average Wind   4.0   4.8   5.6   -1.6   14.3   in 1986   1.7   in 1961  
Direction   SSE   WNW   N       W NNE
High Wind Gust   15   19   20   -5   40   in 1986   10   in 1961  
Direction   SSE   SW   SW       WNW SSE
Maximum Water Temp   70.7   74.5   71.5   -0.8   74.9   in 2015   67.5   in 2020  
Minimum Water Temp   69.1   72.9   68.4   +0.7   72.9   in 2022   62.7   in 2003  
Average Water Temp   69.9   73.7   69.9   -0.0   73.8   in 2015   65.8   in 2020  
Sunrise/ AM Twilight   6:02:47 AM   5:01:37 AM            
Sunset / PM Twilight   7:31:23 PM   8:41:58 PM            
Length Of Day   13:28:36                          
Special Conditions   Fog                                  
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