Portsmouth Rhode Island Weather Almanac  
Wednesday, September 27, 2023  
Clear, Breezy and Warmer   PASTE VALUES
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    September 27, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   67   71   69   -2   82   in 2014   54   in 1893  
Minimum Temperature   47   57   54   -7   66   in 2007   36   in 1957  
Average Temperature   57   64   62   -5   72   in 2017   48   in 1957  
 Month Avg Max Temperature   75.1   73.4   72.6   +2.6   78.7   in 1961   67.6   in 1963  
Month Avg Min Temperature   61.1   58.3   57.9   +3.3   63.2   in 1961   52.0   in 1956  
Month Average Temperature   68.5   66.0   65.2   +3.3   71.1   in 1961   60.3   in 1963  
High Heat Index   67   71   70   -3   85   in 2017            
Low Wind Chill   43                         31   in 1957  
Heating Degree Days   8   1   5   +3   17   in 1957   0   in 2020  
Month Heating DD   41   38   58   -17   156   in 1956   3   in 2021  
Season Heating DD   41   38   58   -17   187   in 1956   3   in 2021  
Cooling Degree Days   0   0   1   -1   7   in 2017   0   in 2023  
Month Cooling DD   136   66   63   +73   180   in 1961   7   in 1893  
Year Cooling DD   708   777   600   +108   856   in 2020   285   in 1902  
Maximum Dew Point   55   63   60   -5   76   in 2017   29   in 1957  
Minimum Dew Point   46   50   50   -4   65   in 1993   17   in 1957  
Average  Dew Point   51   57   55   -4   70   in 2017   23   in 1957  
 Month Avg Max Dew Point   67.1   63.9   63.1   +4.0   67.7   in 2018   55.0   in 1966  
Month Avg Min Dew Point   58.9   54.0   53.3   +5.6   58.9   in 2023   44.4   in 1984  
Month Average Dew Point   63.2   59.2   58.2   +5.0   63.3   in 2018   50.1   in 1984  
Precipitation   .00   .00   .14   -.14   1.49   in 1962            
One Hour Rain   .00   .00           .29   in 1998            
Half Hour Rain   .00   .00           .19   in 2008            
Hourly Rain Rate   .00   .00           2.22   in 2008            
Month Precipitation   5.31   4.39   3.38   +1.93   10.67   in 1961   .31   in 1959  
Year Precipitation   40.93   29.81   32.66   +8.27   48.49   in 1998   17.64   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 27, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   98%   98%   93%   +5%   100%   in 2017   59%   in 1957  
Minimum Humidity   54%   54%   61%   -7%   97%   in 1993   26%   in 1957  
Average Humidity   76%   76%   77%   -1%   99%   in 1993   43%   in 1957  
Maximum Barometer   30.37   29.93   30.13   +00.24   30.48   in 2015   29.76   in 1977  
Minimum Barometer   30.30   29.78   29.89   +00.41   30.33   in 1996   28.81   in 1985  
Average Barometer   30.34   29.86   30.01   +00.32   30.40   in 2015   29.54   in 1985  
Average Wind   7.4   5.3   6.1   +1.3   23.8   in 1985   1.0   in 1990  
Direction   N   SSW   SSW       S ESE
High Wind Gust   18   25   22   -4   77   in 1985   9   in 2017  
Direction   NE   SSW   SW       S SSE
Maximum Water Temp   67.1   70.5   66.9   +0.2   70.5   in 2021   63.0   in 1996  
Minimum Water Temp   66.0   69.4   65.0   +1.0   69.4   in 2021   61.0   in 2000  
Average Water Temp   66.6   70.0   66.0   +0.6   70.0   in 2021   62.5   in 2000  
Sunrise/ AM Twilight   6:37:26 AM   6:10:47 AM            
Sunset / PM Twilight   6:34:00 PM   7:01:22 PM            
Length Of Day   11:56:34                          
Special Conditions                                      
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