Portsmouth Rhode Island Weather Almanac  
Sunday, March 31, 2024  
Mostly Cloudy early then Partly Cloudy, Continued Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    March 31, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   58   47   50   +8   71   in 1981   35   in 1970  
Minimum Temperature   40   29   35   +5   49   in 1998   15   in 1923  
Average Temperature   49   38   43   +6   59   in 1998   26   in 1923  
 Month Avg Max Temperature   50.1   47.3   45.6   +4.5   51.9   in 2012   36.0   in 1916  
Month Avg Min Temperature   35.5   33.5   30.7   +4.8   37.4   in 2012   23.4   in 1916  
Month Average Temperature   43.0   40.6   38.4   +4.6   44.9   in 2012   30.0   in 1916  
High Heat Index                   #N/A   in #N/A            
Low Wind Chill   40   25   28   +12             4   in 1923  
Heating Degree Days   16   27   22   -6   39   in 1923   6   in 1998  
Month Heating DD   682   757   824   -142   1086   in 1916   622   in 2012  
Season Heating DD   4229   4067   4681   -452   5689   in 1918   3858   in 2016  
Cooling Degree Days   0   0   0   +0       in     0   in Many  
Month Cooling DD   0   0   0   +0   3   in 2022   0   in Many  
Year Cooling DD   726   784   609   +117   871   in 2020   290   in 1902  
Maximum Dew Point   40   45   38   +2   56   in 1998   12   in 1965  
Minimum Dew Point   29   15   25   +4   47   in 1987   2   in 1964  
Average  Dew Point   35   30   32   +3   51   in 1998   8   in 1965  
 Month Avg Max Dew Point   40.8   37.6   34.6   +6.2   41.6   in 2012   25.9   in 1960  
Month Avg Min Dew Point   28.1   24.3   20.2   +7.9   28.1   in 2024   11.1   in 1950  
Month Average Dew Point   34.8   30.9   27.7   +7.1   34.8   in 2024   19.4   in 1960  
Precipitation   .00   .04   .14   -.14   2.13   in 1997            
One Hour Rain   .00   .01           .68   in 1987            
Half Hour Rain   .00   .01           .26   in 2004            
Hourly Rain Rate   .00   .00           2.82   in 2022            
Month Precipitation   9.28   4.37   4.36   +4.92   13.24   in 2010   .32   in 1915  
Year Precipitation   18.84   13.50   11.59   +7.25   20.09   in 2010   6.16   in 2012  
Snow   0.0   0.0   0.1   -0.1   5.9   in 1970            
Snow Depth   0   0   0   -0   4   in 1984            
Month Snow   T   0.1   5.7   -5.7   31.6   in 1956   0.0   in #N/A  
Season Snow   12.7   9.1   33.3   -20.6   78.0   in 2005   5.0   in 1998  
    March 31, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   71%   95%   87%   -16%   100%   in 2004   44%   in 1950  
Minimum Humidity   43%   40%   52%   -9%   97%   in 1987   14%   in 1963  
Average Humidity   57%   68%   70%   -13%   99%   in 1987   39%   in 1965  
Maximum Barometer   29.97   30.39   30.08   -00.11   30.70   in 2008   29.35   in 1974  
Minimum Barometer   29.70   29.94   29.78   -00.08   30.37   in 1967   29.01   in 1974  
Average Barometer   29.84   30.17   29.93   -00.09   30.50   in 1967   29.18   in 1974  
Average Wind   6.1   7.0   8.5   -2.4   21.2   in 1987   3.2   in 1996  
Direction   NNW   S   SSW       SSE   S  
High Wind Gust   21   20   27   -6   51   in 1997   11   in 1973  
Direction   WNW   S   NW       NNE   S  
Maximum Water Temp   45.3   45.0   43.2   +2.1   47.3   in 1998   38.7   in 2014  
Minimum Water Temp   43.2   43.0   40.8   +2.4   46.0   in 2012   36.9   in 2015  
Average Water Temp   44.3   44.0   42.0   +2.3   46.6   in 2012   37.9   in 2015  
Sunrise/ AM Twilight   6:28:49 AM   6:00:00 AM            
Sunset / PM Twilight   7:09:55 PM   7:38:09 PM            
Length Of Day   12:41:06                          
Special Conditions   None                                  
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