Portsmouth Rhode Island Weather Almanac  
Thursday, July 20, 2023  
Clear, Light Winds, Warm and Less Humid  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    July 20, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   85   90   80   +5   94   in 2019   66   in 1902  
Minimum Temperature   67   69   65   +2   74   in 2019   55   in 2000  
Average Temperature   76   80   73   +3   84   in 2019   63   in 1903  
 Month Avg Max Temperature   81.8   81.1   79.6   +2.2   84.6   in 1955   74.6   in 1902  
Month Avg Min Temperature   68.3   64.9   64.4   +4.0   71.3   in 2013   57.9   in 1962  
Month Average Temperature   75.3   73.3   72.4   +3.0   77.5   in 2013   67.7   in 2009  
High Heat Index   90   99           113   in 2019            
Low Wind Chill                                      
Heating Degree Days   0   0   0   +0   2   in 1903   0   in 2023  
Month Heating DD   0   0   3   -3   23   in 1914   0   in 2023  
Season Heating DD   0   0   3   -3   23   in 1914   0   in 2023  
Cooling Degree Days   11   15   8   +3   19   in 2019   0   in 2012  
Month Cooling DD   206   166   147   +59   250   in 2013   61   in 1895  
Year Cooling DD   282   261   240   +42   362   in 2010   93   in 1902  
Maximum Dew Point   73   75   69   +4   79   in 2020   51   in 1965  
Minimum Dew Point   64   67   61   +3   72   in 2019   43   in 1965  
Average  Dew Point   69   71   65   +4   76   in 2019   47   in 1965  
 Month Avg Max Dew Point   74.9   69.3   68.4   +6.5   74.9   in 2023   60.8   in 1978  
Month Avg Min Dew Point   67.0   60.2   59.9   +7.2   68.9   in 2013   51.0   in 1962  
Month Average Dew Point   70.9   64.7   64.1   +6.8   71.6   in 2013   55.9   in 1962  
Precipitation   .00   .00   .09   -.09   1.57   in 1988            
One Hour Rain   .00   .00           .33   in 1982            
Hourly Rain Rate   .00   .00           .37   in 2014            
Month Precipitation   5.46   .49   2.00   +3.46   5.46   in 2023   .16   in 2002  
Year Precipitation   29.94   23.39   24.57   +5.37   40.76   in 1998   13.52   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  
    July 20, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   96%   95%   92%   +4%   100%   in 2004   64%   in 1957  
Minimum Humidity   60%   57%   59%   +1%   92%   in 1988   30%   in 1957  
Average Humidity   78%   76%   76%   +2%   96%   in 1988   47%   in 1957  
Maximum Barometer   30.01   29.77   30.01   +00.00   30.24   in 2006   29.66   in 1963  
Minimum Barometer   29.90   29.71   29.82   +00.08   30.15   in 1956   29.48   in 1963  
Average Barometer   29.96   29.74   29.91   +00.04   30.20   in 1956   29.57   in 1963  
Average Wind   4.7   5.5   5.8   -1.1   11.3   in 1974   2.1   in 2009  
Direction   NW   SW   SW       N SE
High Wind Gust   14   20   20   -6   34   in 1996   10   in 1967  
Direction   ENE   SW   SSW       WNW N
Maximum Water Temp   77.4   74.1   71.5   +5.9   77.4   in 2023   67.5   in 2000  
Minimum Water Temp   71.1   72.0   67.8   +3.3   72.5   in 2021   64.2   in 2003  
Average Water Temp   74.3   73.1   69.7   +4.6   74.3   in 2023   66.5   in 2000  
Sunrise/ AM Twilight   5:28:12 AM   4:57:34 AM            
Sunset / PM Twilight   8:14:11 PM   8:45:49 PM            
Length Of Day   14:45:59                          
Special Conditions   None                              
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