Portsmouth Rhode Island Weather Almanac  
Wednesday, May 15, 2024  
Mostly Cloudy early then Cloudy, Moderate Rain and Fog, Light Wind and Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    May 15, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   65   71   65   +0   84   in 1900   50   in 1916  
Minimum Temperature   55   47   48   +7   57   in 2012   38   in 1986  
Average Temperature   60   59   56   +4   68   in 1976   46   in 1947  
 Month Avg Max Temperature   61.7   66.4   62.3   -0.6   71.3   in 2001   52.4   in 1917  
Month Avg Min Temperature   46.4   47.6   46.2   +0.2   50.4   in 1930   39.8   in 1967  
Month Average Temperature   54.3   57.2   54.3   +0.1   60.5   in 1930   46.3   in 1917  
High Heat Index                   83   in 1900            
Low Wind Chill                             37   in 1985  
Heating Degree Days   5   6   9   -4   19   in 1947   0   in 1976  
Month Heating DD   160   121   161   -1   280   in 1917   79   in 1930  
Season Heating DD   4891   4600   5365   -474   6395   in 1905   4437   in 2012  
Cooling Degree Days   0   0   0   +0   3   in 1976   0   in 2024  
Month Cooling DD   0   4   0   +0   27   in 2001   0   in 2024  
Year Cooling DD   0   4   0   +0   27   in 2001   0   in 2024  
Maximum Dew Point   61   50   53   +8   64   in 2022   35   in 2002  
Minimum Dew Point   51   34   42   +9   55   in 2014   24   in 1971  
Average  Dew Point   56   42   47   +9   59   in 2022   31   in 1971  
 Month Avg Max Dew Point   52.9   51.3   50.5   +2.5   55.7   in 2004   40.3   in 1966  
Month Avg Min Dew Point   42.7   39.1   38.9   +3.8   45.7   in 1998   27.5   in 1966  
Month Average Dew Point   48.1   45.5   44.7   +3.4   49.9   in 1998   33.9   in 1966  
Precipitation   .79   .00   .10   +.69   1.53   in 1938            
One Hour Rain   .21   .00           .56   in 1978            
Half Hour Rain   .15   .00           .24   in 2010            
Hourly Rain Rate   .65   .00           4.76   in 2010            
Month Precipitation   2.46   .67   1.71   +.75   6.16   in 2006   .01   in 2015  
Year Precipitation   25.38   17.90   17.57   +7.81   32.13   in 1983   10.56   in 1927  
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0   0   +0       in              
Month Snow   0.0   0.0   0.0   +0.0   1.7   in 1977   0.0   in Many  
Season Snow   12.7   9.1   33.8   -21.1   84.1   in 1996   5.0   in 1998  
    May 15, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   99%   86%   90%   +9%   100%   in 2018   59%   in 2000  
Minimum Humidity   81%   31%   53%   +28%   94%   in 1953   25%   in 1994  
Average Humidity   90%   59%   72%   +18%   96%   in 1953   46%   in 2000  
Maximum Barometer   29.97   30.21   30.09   -00.12   30.53   in 1971   29.61   in 1960  
Minimum Barometer   29.76   29.89   29.85   -00.08   30.32   in 1999   29.40   in 2017  
Average Barometer   29.87   30.05   29.97   -00.10   30.38   in 1999   29.58   in 1960  
Average Wind   4.8   7.9   6.4   -1.6   14.3   in 2002   2.2   in 1962  
Direction   E   SSW   S       WNW         SSE        
High Wind Gust   23   26   22   +1   40   in 2002   9   in 1998  
Direction   NE   SW   SSE       WNW         SSE        
Maximum Water Temp   56.5   59.7   55.0   +1.5   59.9   in 2007   49.5   in 2019  
Minimum Water Temp   54.5   55.2   51.8   +2.7   56.6   in 2012   45.1   in 2020  
Average Water Temp   55.5   57.5   53.4   +2.1   58.0   in 2007   47.5   in 2020  
Sunrise/ AM Twilight   5:25:15 AM   4:53:14 AM            
Sunset / PM Twilight   7:58:11 PM   8:30:01 PM            
Length Of Day   14:32:56                          
Special Conditions   Fog                                  
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Hour-by-Hour Weather For May 15, 2024            
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