Portsmouth Rhode Island Weather Almanac  
Thursday, July 27, 2023  
Mostly Cloudy early then P Cloudy, PM Thunderstorm & Rain, Breezy, Warm & Humid  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    July 27, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   83   82   80   +3   94   in 1940   67   in 1993  
Minimum Temperature   71   61   65   +6   73   in 1995   53   in 2001  
Average Temperature   77   72   73   +4   82   in 2020   63   in 2001  
 Month Avg Max Temperature   81.9   81.9   79.7   +2.1   84.4   in 1955   73.5   in 1902  
Month Avg Min Temperature   68.0   66.1   64.6   +3.4   70.1   in 2013   59.2   in 1962  
Month Average Temperature   75.2   74.3   72.5   +2.7   76.3   in 2013   67.4   in 1902  
High Heat Index   92   82           101   in 1940            
Low Wind Chill                                      
Heating Degree Days   0   0   0   +0   2   in 2001   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   12   7   7   +5   17   in 2020   0   in 2004  
Month Cooling DD   275   250   203   +72   306   in 2013   78   in 1902  
Year Cooling DD   351   345   296   +55   441   in 2010   103   in 1902  
Maximum Dew Point   78   66   69   +9   79   in 1995   54   in 2001  
Minimum Dew Point   69   58   61   +8   71   in 2018   44   in 1977  
Average  Dew Point   74   62   65   +9   75   in 1995   50   in 2001  
 Month Avg Max Dew Point   74.5   70.5   68.5   +6.0   74.5   in 2023   62.0   in 1962  
Month Avg Min Dew Point   66.4   61.6   60.1   +6.3   67.4   in 2013   52.1   in 1965  
Month Average Dew Point   70.5   66.0   64.3   +6.1   70.5   in 2023   57.1   in 1965  
Precipitation   .07   .00   .10   -.03   1.92   in 1990            
One Hour Rain   .07   .00           .85   in 2015            
Hourly Rain Rate   .57   .00           4.50   in 2015            
Month Precipitation   5.53   .49   2.68   +2.85   8.73   in 2009   .36   in 1952  
Year Precipitation   30.01   23.39   25.25   +4.76   41.06   in 1998   13.93   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 27, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   98%   98%   92%   +6%   100%   in 2018   66%   in 1983  
Minimum Humidity   86%   47%   62%   +24%   90%   in 2000   35%   in 1987  
Average Humidity   92%   73%   77%   +15%   95%   in 2000   57%   in 1983  
Maximum Barometer   30.04   29.96   30.03   +00.01   30.42   in 1990   29.81   in 1992  
Minimum Barometer   29.86   29.88   29.84   +00.02   30.20   in 2019   29.52   in 1989  
Average Barometer   29.95   29.92   29.93   +00.02   30.26   in 2019   29.67   in 1992  
Average Wind   8.3   4.2   5.7   +2.6   11.5   in 1973   2.6   in 1991  
Direction   SW   SW   SW       SW NNE
High Wind Gust   33   22   20   +13   40   in 1927   11   in 1990  
Direction   SW   W   S       NE ENE
Maximum Water Temp   77.4   74.3   71.8   +5.6   77.4   in 2023   67.1   in 2001  
Minimum Water Temp   75.4   72.1   68.9   +6.5   75.4   in 2023   64.6   in 1996  
Average Water Temp   76.4   73.2   70.4   +6.0   76.4   in 2023   66.1   in 2001  
Sunrise/ AM Twilight   5:34:37 AM   5:04:46 AM            
Sunset / PM Twilight   8:08:00 PM   8:38:46 PM            
Length Of Day   14:33:23                          
Special Conditions   Thunderstorm  
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