Portsmouth Rhode Island Weather Almanac  
Saturday, March 12, 2022  
Dense Fog & Warm early then Cloudy, Rain to Snow, Windy and Colder  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2022
    March 12, 2022   Record   Record  
Observed Daily Data   2022   2021   Norm   Depart   Highest   Lowest  
Maximum Temperature   49   64   44   +5   65   in 1973   26   in 2017  
Minimum Temperature   23   45   30   -7   45   in 2021   9   in 1900  
Average Temperature   36   55   37   -1   55   in 2021   19   in 1900  
 Month Avg Max Temperature   46.5   45.4   42.7   +3.8   52.5   in 1894   32.1   in 1916  
Month Avg Min Temperature   29.0   27.4   28.2   +0.8   36.4   in 1973   18.2   in 1950  
Month Average Temperature   38.1   36.8   35.8   +2.3   44.2   in 1973   26.3   in 1916  
High Heat Index                                      
Low Wind Chill   7   40   21   -14             -6   in 1998  
Heating Degree Days   29   10   28   +1   46   in 1900   10   in 2021  
Month HDD   323   339   351   -28   464   in 1916   250   in 1973  
Season HDD   3893   3906   4177   -284   5210   in 1918   3462   in 2016  
Cooling Degree Days   0   0   0   +0       in         in    
Month CDD   0   0   0   +0   0   in         in    
Year Cooling Degree Days                       in         in    
Maximum Dew Point   49   45   34   +15   53   in 1973   1   in 1984  
Minimum Dew Point   11   19   19   -8   44   in 1982   -10   in 1984  
Average  Dew Point   30   32   27   +3   47   in 1982   -5   in 1984  
 Month Avg Max Dew Point   40.1   28.8   32.8   +7.3   41.4   in 1973   17.9   in 1960  
Month Avg Min Dew Point   18.2   12.2   17.5   +0.7   30.6   in 1973   2.4   in 1950  
Month Average Dew Point   29.1   20.5   25.5   +3.6   36.0   in 1973   11.6   in 1960  
Precipitation   .64   T   .14   +.50   2.05   in 1985            
One Hour   .33   T           .59   in 1959            
Hourly Rate   1.22   .00           1.22   in 2022            
Month Precipitation   1.23   .45   1.59   -.36   5.49   in 1983   T   in 1894  
Year Precipitation   10.62   5.95   8.69   +1.93   18.97   in 1979   3.23   in 1980  
Snow   T   0.0   0.2   -0.2   7.6   in 1939       in    
Snow Depth   0   0           12   in 1941       in    
Month Snow   0.5   T   2.6   -2.1   18.9   in 1941   0.0   in 2011  
Season Snow   34.2   30.7   29.9   +4.3   75.0   in 2005   4.7   in 1998  
    March 12, 2022     Record Record
Observed Daily Data   2022   2021   Norm   Depart   Highest Lowest
Maximum Humidity   99%   83%   83%   +16%   100%   in 2013   44%   in 1984  
Minimum Humidity   60%   18%   48%   +12%   91%   in 2013   18%   in 2021  
Average Humidity   80%   51%   66%   +14%   96%   in 2013   33%   in 1974  
Maximum Barometer   29.85   30.09   30.14   -00.29   30.72   in 1995   29.30   in 1983  
Minimum Barometer   28.99   29.88   29.79   -00.80   30.56   in 1995   28.90   in 1983  
Average Barometer   29.42   29.99   29.97   -00.55   30.64   in 1995   29.10   in 1983  
Average Wind   12.2   9.0   8.4   +3.8   18.0   in 1980   2.8   in 1964  
Direction   WNW   NW   WNW       WNW         SW        
High Wind Gust   43   38   27   +16   47   in 1980   12   in 1964  
Direction   W   NW   NNW       W         S        
Maximum Water Temp   42.8   40.7   39.6   +3.2   45.8   in 2012   35.1   in 2005  
Minimum Water Temp   40.5   38.2   38.0   +2.5   43.7   in 2012   33.6   in 2017  
Average Water Temp   41.7   39.5   38.8   +2.8   44.8   in 2012   34.8   in 2005  
Sunrise/ AM Twilight   6:01:47 AM   5:32:24 AM            
Sunset / PM Twilight   5:48:21 PM   6:16:57 PM            
Length Of Day   11:49:33                          
Special Conditions   Dense Fog                              
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