Portsmouth Rhode Island Weather Almanac  
Thursday, March 28, 2024  
Cloudy, Moderate Rain and Fog, Continued Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    March 28, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   51   45   49   +2   74   in 1989   33   in 2022  
Minimum Temperature   44   37   34   +10   48   in 1949   11   in 1923  
Average Temperature   48   41   42   +6   59   in 1991   25   in 1923  
 Month Avg Max Temperature   49.6   47.4   45.1   +4.5   52.3   in 2012   34.5   in 1916  
Month Avg Min Temperature   35.2   33.8   30.3   +4.9   37.5   in 2012   22.1   in 1916  
Month Average Temperature   42.6   40.8   38.0   +4.6   45.1   in 2012   28.6   in 1916  
High Heat Index                   #N/A   in #N/A            
Low Wind Chill   25   33   26   -1             -3   in 1923  
Heating Degree Days   17   24   23   -6   40   in 1923   6   in 1991  
Month Heating DD   628   678   757   -129   1019   in 1916   557   in 2012  
Season Heating DD   4175   3988   4614   -439   5627   in 1918   3798   in 2012  
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   50   40   37   +13   57   in 1950   2   in 1982  
Minimum Dew Point   43   35   24   +19   43   in 2024   -5   in 1982  
Average  Dew Point   47   38   31   +16   48   in 1998   -2   in 1982  
 Month Avg Max Dew Point   40.9   37.4   34.3   +6.5   41.8   in 2012   23.9   in 1960  
Month Avg Min Dew Point   28.1   25.3   19.7   +8.4   28.1   in 2024   10.6   in 1950  
Month Average Dew Point   34.8   31.3   27.3   +7.5   34.8   in 2024   17.3   in 1960  
Precipitation   1.74   .17   .14   +1.60   2.54   in 2005            
One Hour Rain   .18   .05           .56   in 2021            
Half Hour Rain   .12   .10           .36   in 2021            
Hourly Rain Rate   .32   .10           2.40   in 2005            
Month Precipitation   8.76   4.33   3.94   +4.82   9.15   in 1983   .22   in 1915  
Year Precipitation   18.32   13.46   11.17   +7.15   19.47   in 1979   5.97   in 2012  
Snow   0.0   0.0   0.1   -0.1   2.3   in 2015            
Snow Depth   0   0   0   -0   1   in 1959            
Month Snow   T   0.1   5.4   -5.4   30.6   in 1956   0.0   in 1903  
Season Snow   12.7   9.1   33.0   -20.3   78.0   in 2005   5.0   in 1998  
    March 28, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   99%   98%   83%   +16%   100%   in 2021   39%   in 1982  
Minimum Humidity   95%   75%   50%   +45%   95%   in 2024   13%   in 1991  
Average Humidity   97%   87%   66%   +31%   97%   in 2024   28%   in 1982  
Maximum Barometer   30.05   30.12   30.13   -00.08   30.61   in 1973   29.56   in 2000  
Minimum Barometer   29.70   29.97   29.83   -00.13   30.27   in 2004   29.11   in 2000  
Average Barometer   29.88   30.05   29.98   -00.10   30.43   in 1996   29.34   in 2000  
Average Wind   5.8   5.3   8.3   -2.5   19.2   in 1955   1.6   in 1994  
Direction   N   NNW   WNW       WNW   NW  
High Wind Gust   25   18   26   -1   46   in 1955   9   in 1994  
Direction   N   NW   N       W   NNW  
Maximum Water Temp   43.0   45.7   42.3   +0.7   46.7   in 2012   37.6   in 2015  
Minimum Water Temp   41.7   44.2   40.2   +1.5   45.5   in 2012   36.5   in 2015  
Average Water Temp   42.4   45.0   41.2   +1.1   46.1   in 2012   37.1   in 2015  
Sunrise/ AM Twilight   6:33:53 AM   6:05:10 AM            
Sunset / PM Twilight   7:06:38 PM   7:34:47 PM            
Length Of Day   12:32:45                          
Special Conditions   Fog                                  
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