Portsmouth Rhode Island Weather Almanac  
Wednesday, January 22, 2025  
Partly Cloudy to Clear PM, Continued Bitterly Cold  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2025
    January 22, 2025   Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   22   37   37   -15   53   in 1959   14   in 2000  
Minimum Temperature   10   19   23   -13   41   in 1906   -1   in 2005  
Average Temperature   16   28   30   -14   46   in 2017   8   in 1970  
 Month Avg Max Temperature   34.9   37.9   38.4   -3.5   45.7   in 1937   27.0   in 1893  
Month Avg Min Temperature   23.2   25.2   24.6   -1.4   33.1   in 2023   9.7   in 1981  
Month Average Temperature   29.3   31.7   31.6   -2.3   39.0   in 1937   18.7   in 1981  
High Heat Index   76               76   in 2024            
Low Wind Chill   -3   7   9   -12             -24   in 1970  
Heating Degree Days   49   37   35   +14   57   in 1970   19   in 2017  
Month Heating DD   785   732   735   +50   1018   in 1981   573   in 1937  
Season Heating DD   2437   2412   2605   -168   3378   in 1918   2024   in 2016    
Cooling Degree Days   0   0   #REF!   #REF!   0   in 1900   0   in All    
Month Cooling DD                                        
Year Cooling DD                                        
Maximum Dew Point   7   26   29   -22   53   in 1959   -7   in 2000    
Minimum Dew Point   -4   8   12   -16   38   in 2017   -17   in 1970    
Average  Dew Point   2   17   21   -19   43   in 2017   -12   in 1970  
 Month Avg Max Dew Point   25.0   30.5   30.9   -5.9   39.3   in 2023   13.1   in 1981  
Month Avg Min Dew Point   14.9   17.0   14.8   +0.1   28.4   in 2023   -5.4   in 1981  
Month Average Dew Point   20.2   24.0   22.9   -2.7   34.0   in 2023   3.9   in 1981  
Precipitation   .00   .00   .12   -.12   1.07   in 1987            
One Hour Rain   .00   .00           .32   in 1958            
Half Hour Rain   .00   .00         .09   in 2023            
Hourly Rain Rate   .00   .00           .33   in 2023            
Month Precipitation   1.49   4.95   2.66   -1.17   9.13   in 1979   .51   in 1984  
Year Precipitation   1.49   4.95   2.66   -1.17   9.13   in 1979   .51   in 1984    
Snow   0.0   0.0   0.4   -0.4   8.5   in 1976   0.0   in      
Snow Depth   2   T   1.4   +0.6   14   in 1961   0   in      
Month Snow   3.2   5.6   6.8   -3.6   25.8   in 1996   0.0   in 1986    
Season Snow   3.4   5.7   13.9   -10.5   41.6   in 1996   0.5   in 1928    
    January 22, 2025     Record Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest  
Maximum Humidity   68%   74%   82%   -14%   100%   in 2017   48%   in 2000    
Minimum Humidity   31%   46%   53%   -22%   90%   in 1993   25%   in 2003    
Average Humidity   50%   60%   68%   -18%   95%   in 1993   37%   in 2000    
Maximum Barometer   30.49   30.51   30.20   +00.29   30.75   in 1982   29.56   in 1985  
Minimum Barometer   30.41   30.35   29.87   +00.54   30.53   in 1984   29.02   in 1979  
Average Barometer   30.45   30.43   30.03   +00.42   30.59   in 1984   29.31   in 1979  
Average Wind   6.6   9.0   7.9   -1.3   20.0   in 1959   1.1   in 1955  
Direction   N   WNW   NW       SSW         WSW        
High Wind Gust   22   30   26   -4   63   in 1959   10   in 1983  
Direction   N   SW   NW       SSW         S        
Maximum Water Temp   36.7   40.5   38.9   -2.2   46.6   in 2007   34.3   in 2003  
Minimum Water Temp   34.5   36.0   36.6   -2.1   42.1   in 2007   30.4   in 2019  
Average Water Temp   35.6   38.3   37.7   -2.1   44.3   in 2007   32.8   in 2019  
Sunrise/ AM Twilight   7:05:05 AM   6:35:08 AM            
Sunset / PM Twilight   4:48:09 PM   5:18:35 PM            
Length Of Day   16:48:47                          
Special Conditions   None                                  
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