Portsmouth Rhode Island Weather Almanac  
Wednesday, March 13, 2024  
Clear, Continued Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    March 13, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   54   42   45   +9   74   in 1990   29   in 1896  
Minimum Temperature   32   33   30   +2   46   in 2012   12   in 1980  
Average Temperature   43   38   37   +6   55   in 1990   21   in 1896  
 Month Avg Max Temperature   49.7   45.1   42.8   +6.8   52.3   in 1894   32.8   in 1916  
Month Avg Min Temperature   35.6   32.0   28.3   +7.3   37.0   in 1973   18.8   in 1984  
Month Average Temperature   42.8   38.8   35.8   +7.0   44.8   in 1973   27.1   in 1916  
High Heat Index                   #N/A   in #N/A            
Low Wind Chill   31   30   21   +10             -2   in 1998  
Heating Degree Days   22   27   28   -6   44   in 1896   10   in 1990  
Month Heating DD   288   341   379   -91   493   in 1916   263   in 1973  
Season Heating DD   3835   3651   4236   -401   5241   in 1905   3474   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   36   40   34   +2   55   in 1990   7   in 1997  
Minimum Dew Point   25   31   19   +6   42   in 2006   -12   in 1980  
Average  Dew Point   31   36   27   +4   47   in 2006   3   in 1997  
 Month Avg Max Dew Point   42.2   34.7   32.8   +9.3   42.2   in 2024   18.5   in 1960  
Month Avg Min Dew Point   30.1   24.2   17.6   +12.5   30.5   in 1973   2.5   in 1980  
Month Average Dew Point   36.4   29.5   25.6   +10.8   36.4   in 2024   12.2   in 1984  
Precipitation   .00   .53   .14   -.14   2.37   in 1993            
One Hour Rain   .00   .12           .73   in 1993            
Half Hour Rain   .00   .07           .18   in 2010            
Hourly Rain Rate   .00   .23           1.03   in 2020            
Month Precipitation   5.02   2.12   1.73   +3.29   5.49   in 1983   .04   in 1915  
Year Precipitation   14.58   11.25   8.96   +5.62   18.97   in 1979   3.23   in 1980  
Snow   0.0   0.0   0.2   -0.2   9.5   in 2018            
Snow Depth   0   0   1   -1   13   in 1939            
Month Snow   T   0.1   2.8   -2.8   18.9   in 1941   0.0   in 2011  
Season Snow   12.7   9.1   30.4   -17.7   75.0   in 2005   4.7   in 1998  
    March 13, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   93%   98%   86%   +7%   100%   in 2013   42%   in 1997  
Minimum Humidity   37%   80%   51%   -14%   92%   in 1966   19%   in 2021  
Average Humidity   65%   89%   68%   -3%   96%   in 1953   33%   in 2021  
Maximum Barometer   30.02   30.09   30.11   -00.09   30.74   in 1984   29.42   in 1983  
Minimum Barometer   29.84   29.72   29.75   +00.09   30.40   in 1995   28.52   in 1993  
Average Barometer   29.93   29.91   29.93   +00.00   30.51   in 1984   29.25   in 1983  
Average Wind   6.8   7.1   8.5   -1.7   19.7   in 1959   2.8   in 2006  
Direction   S   E   WNW       W   SSE  
High Wind Gust   20   23   27   -7   57   in 1993   10   in 1971  
Direction   S   ENE   NNW       ENE         SE        
Maximum Water Temp   43.7   42.1   39.9   +3.8   45.7   in 2012   35.6   in 2003  
Minimum Water Temp   41.4   41.5   38.1   +3.3   44.6   in 2012   33.7   in 2015  
Average Water Temp   42.6   41.8   39.0   +3.5   45.2   in 2012   34.8   in 2015  
Sunrise/ AM Twilight   6:59:16 AM   6:30:43 AM            
Sunset / PM Twilight   6:50:04 PM   7:18:04 PM            
Length Of Day   11:50:48                          
Special Conditions   None                                  
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