Portsmouth Rhode Island Weather Almanac  
Monday, August 14, 2023  
Partly Cloudy, Light Winds, Continued Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    August 14, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   81   81   79   +2   92   in 1918   65   in 1946  
Minimum Temperature   66   57   64   +2   75   in 1988   48   in 1964  
Average Temperature   74   69   72   +2   82   in 1918   60   in 1964  
 Month Avg Max Temperature   79.7   83.7   79.4   +0.4   85.4   in 2020   71.8   in 1903  
Month Avg Min Temperature   64.1   68.7   64.6   -0.5   72.2   in 1988   55.8   in 1964  
Month Average Temperature   72.2   76.5   72.0   +0.2   78.8   in 1988   64.4   in 1964  
High Heat Index   84   79   82   +2   101   in 2016            
Low Wind Chill                             46   in 1964  
Heating Degree Days   0   0   0   +0   5   in 1964   0   in 2023  
Month Heating DD   0   0   0   +0   19   in 1964   0   in 2023  
Season Heating DD   0   0   0   +0   19   in 1964   0   in 2023  
Cooling Degree Days   9   4   7   +2   17   in 1918   0   in 1992  
Month Cooling DD   101   161   105   -4   193   in 1988   11   in 1964  
Year Cooling DD   485   549   433   +52   640   in 2020   203   in 1902  
Maximum Dew Point   71   60   68   +3   79   in 2021   47   in 1964  
Minimum Dew Point   62   52   60   +2   73   in 2005   38   in 1964  
Average  Dew Point   67   56   64   +3   75   in 2005   43   in 1964  
 Month Avg Max Dew Point   68.9   72.9   68.9   +0.1   74.3   in 2018   58.2   in 1964  
Month Avg Min Dew Point   59.6   65.3   60.9   -1.4   69.1   in 2003   47.2   in 1964  
Month Average Dew Point   64.3   69.1   64.8   -0.5   71.2   in 2003   52.7   in 1964  
Precipitation   .00   .00   .12   -.12   2.34   in 1942            
One Hour Rain   .00   .00           .84   in 1963            
Half Hour Rain   .00   .00           .15   in 2008            
Hourly Rain Rate   .00   .00           3.56   in 2008            
Month Precipitation   3.12   .42   1.67   +1.45   7.15   in 1946   .00   in 1911  
Year Precipitation   33.37   23.83   27.32   +6.05   43.87   in 1983   15.63   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 14, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   97%   98%   93%   +4%   100%   in 2018   73%   in 1964  
Minimum Humidity   68%   39%   58%   +10%   92%   in 1984   37%   in 1964  
Average Humidity   83%   69%   76%   +7%   96%   in 1984   55%   in 1964  
Maximum Barometer   29.98   30.07   30.05   -00.07   30.39   in 1931   29.74   in 1963  
Minimum Barometer   29.91   30.02   29.87   +00.04   30.17   in 2003   29.25   in 1963  
Average Barometer   29.95   30.05   29.96   -00.02   30.22   in 2003   29.50   in 1963  
Average Wind   4.4   3.7   5.7   -1.3   12.6   in 2000   2.3   in 2017  
Direction   WNW   SSW   SSW       NNE SSE
High Wind Gust   23   17   20   +3   37   in 1963   10   in 2017  
Direction   SSW   SW   SSW       WNW SSE
Maximum Water Temp   72.9   72.1   72.0   +0.9   76.7   in 2016   68.2   in 2000  
Minimum Water Temp   70.7   70.9   69.0   +1.7   74.5   in 2012   65.3   in 2001  
Average Water Temp   71.8   71.5   70.5   +1.3   75.6   in 2012   67.1   in 1996  
Sunrise/ AM Twilight   5:52:33 AM   4:51:54 AM            
Sunset / PM Twilight   7:46:15 PM   8:50:37 PM            
Length Of Day   13:53:42                          
Special Conditions   None                              
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