Portsmouth Rhode Island Weather Almanac  
Saturday, May 4, 2024  
Clear early, Partly Cloudy Day to Mostly Cloudy PM, Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    May 4, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   60   51   61   -1   87   in 2001   50   in 1987  
Minimum Temperature   41   43   45   -4   58   in 2001   33   in 1964  
Average Temperature   51   47   53   -2   73   in 2001   42   in 1911  
 Month Avg Max Temperature   60.0   55.3   60.5   -0.5   83.8   in 2001   51.3   in 1920  
Month Avg Min Temperature   43.5   45.0   44.8   -1.3   54.5   in 2001   34.8   in 1964  
Month Average Temperature   52.0   50.3   52.8   -0.8   69.5   in 2001   45.5   in 1917  
High Heat Index                   86   in 2001            
Low Wind Chill   40   37                     26   in 1986  
Heating Degree Days   14   18   12   +2   23   in 1911   0   in 2010  
Month Heating DD   52   59   49   +3   78   in 1917   1   in 2001  
Season Heating DD   4783   4538   5253   -470   6309   in 1904   4348   in 2012  
Cooling Degree Days   0   0   0   +0   8   in 2001   0   in 2024  
Month Cooling DD   0   0   0   +0   19   in 2001   0   in 2024  
Year Cooling DD   0   0   0   +0   19   in 2001   0   in 2024  
Maximum Dew Point   49   45   49   +0   62   in 2018   23   in 1986  
Minimum Dew Point   38   40   37   +1   50   in 2018   15   in 1986  
Average  Dew Point   44   43   43   +1   56   in 2018   19   in 1986  
 Month Avg Max Dew Point   49.8   49.8   48.8   +1.0   58.3   in 2010   28.3   in 1952  
Month Avg Min Dew Point   41.8   41.8   36.8   +5.0   47.5   in 2010   16.8   in 1974  
Month Average Dew Point   46.3   46.3   42.8   +3.5   52.9   in 2010   25.3   in 1957  
Precipitation   .00   .02   .12   -.12   2.41   in 1893            
One Hour Rain   .00   .01           .42   in 1987            
Half Hour Rain   .00   .01           .30   in 2021            
Hourly Rain Rate   .00   .00           2.22   in 2021            
Month Precipitation   .10   .35   .49   -.39   2.92   in 1900   .00   in 2015  
Year Precipitation   23.02   17.58   16.35   +6.67   31.53   in 1983   9.77   in 1927  
Snow   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   T   in 1995   0.0   in Many  
Season Snow   12.7   9.1   33.8   -21.1   84.1   in 1996   5.0   in 1998  
    May 4, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   93%   95%   87%   +6%   100%   in 2015   54%   in 1967  
Minimum Humidity   58%   71%   49%   +9%   92%   in 2012   16%   in 1980  
Average Humidity   76%   83%   68%   +7%   96%   in 2012   40%   in 1952  
Maximum Barometer   30.38   30.05   30.04   +00.34   30.55   in 1990   29.61   in 1983  
Minimum Barometer   30.25   29.64   29.82   +00.43   30.29   in 1993   29.12   in 1984  
Average Barometer   30.32   29.85   29.93   +00.39   30.36   in 1993   29.39   in 1984  
Average Wind   5.6   9.6   7.0   -1.4   15.2   in 1981   2.4   in 2009  
Direction   NE   NNE   SSW       NNE   SSE  
High Wind Gust   21   25   24   -3   46   in 2014   12   in 2022  
Direction   NE   ENE   SSE       W   S  
Maximum Water Temp   51.8   54.5   51.7   +0.1   58.6   in 2007   46.4   in 2020  
Minimum Water Temp   49.8   52.0   48.7   +1.1   52.3   in 1998   42.6   in 2020  
Average Water Temp   50.8   53.3   50.2   +0.6   54.7   in 2007   44.5   in 2020  
Sunrise/ AM Twilight   5:37:26 AM   5:06:21 AM            
Sunset / PM Twilight   7:46:48 PM   8:17:31 PM            
Length Of Day   14:09:22                          
Special Conditions   None                                  
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Hour-by-Hour Weather For May 4, 2024            
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