Portsmouth Rhode Island Weather Almanac  
Thursday, January 23, 2025  
Mostly Cloudy early then Partly Cloudy, Light Winds, Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2025
    January 23, 2025   Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   30   39   37   -7   56   in 1974   15   in 2003  
Minimum Temperature   11   32   23   -12   44   in 1906   -5   in 1976  
Average Temperature   21   36   30   -9   50   in 1906   5   in 1976  
 Month Avg Max Temperature   34.7   38.0   38.3   -3.6   45.8   in 1913   27.3   in 1893  
Month Avg Min Temperature   22.7   25.5   24.5   -1.8   33.0   in 2023   10.4   in 1981  
Month Average Temperature   29.0   31.9   31.5   -2.6   38.9   in 1932   19.4   in 1981  
High Heat Index   76               76   in 2024            
Low Wind Chill   6   27   11   -5             -32   in 1976  
Heating Degree Days   44   29   35   +9   60   in 1976   15   in 1906  
Month Heating DD   829   761   770   +59   1049   in 1981   600   in 1932  
Season Heating DD   2481   2441   2640   -159   3423   in 1918   2060   in 2016    
Cooling Degree Days   0   0   #REF!   #REF!   0   in 1900   0   in All    
Month Cooling DD                                        
Year Cooling DD                                        
Maximum Dew Point   22   32   28   -6   55   in 1973   -6   in 1976    
Minimum Dew Point   0   21   12   -12   39   in 2018   -26   in 1976    
Average  Dew Point   11   27   20   -9   46   in 2018   -16   in 1976  
 Month Avg Max Dew Point   24.9   30.5   30.7   -5.9   39.5   in 2023   13.5   in 1981  
Month Avg Min Dew Point   14.3   17.2   14.7   -0.4   28.3   in 2023   -4.5   in 1981  
Month Average Dew Point   19.8   24.1   22.8   -3.0   34.0   in 2023   4.5   in 1981  
Precipitation   .00   .10   .12   -.12   1.85   in 1992            
One Hour Rain   .00   .00           .42   in 2018            
Half Hour Rain   .00   .00         .29   in 2018            
Hourly Rain Rate   .00   .00           1.82   in 2018            
Month Precipitation   1.49   5.05   2.78   -1.29   9.13   in 1979   .51   in 1984  
Year Precipitation   1.49   5.05   2.78   -1.29   9.13   in 1979   .51   in 1984    
Snow   0.0   0.5   0.4   -0.4   15.5   in 2005   0.0   in      
Snow Depth   2   1   1.3   +0.7   13   in 1961   0   in      
Month Snow   3.2   6.1   7.2   -4.0   31.4   in 2005   0.0   in 1986    
Season Snow   3.4   6.2   14.3   -10.9   43.6   in 2005   0.5   in 1928    
    January 23, 2025     Record Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest  
Maximum Humidity   85%   99%   87%   -2%   100%   in 2018   53%   in 1976    
Minimum Humidity   58%   56%   54%   +4%   90%   in 1999   19%   in 1962    
Average Humidity   72%   78%   71%   +1%   95%   in 1999   43%   in 1976    
Maximum Barometer   30.46   30.57   30.16   +00.30   30.64   in 1984   29.56   in 1980  
Minimum Barometer   30.06   30.32   29.78   +00.28   30.42   in 1984   28.68   in 1987  
Average Barometer   30.26   30.45   29.97   +00.29   30.53   in 1984   29.20   in 1987  
Average Wind   4.2   6.0   8.6   -4.4   25.5   in 1957   2.3   in 2001  
Direction   N   W   W       SSW         S        
High Wind Gust   18   22   27   -9   61   in 1957   12   in 1950  
Direction   WNW   W   WNW       S         WSW        
Maximum Water Temp   36.7   42.6   39.3   -2.6   45.5   in 2007   34.3   in 2014  
Minimum Water Temp   33.8   37.6   36.9   -3.1   43.5   in 2007   31.5   in 2003  
Average Water Temp   35.3   40.1   38.1   -2.8   44.5   in 2007   33.5   in 2014  
Sunrise/ AM Twilight   7:04:22 AM   6:34:30 AM            
Sunset / PM Twilight   4:49:23 PM   5:19:44 PM            
Length Of Day   16:50:01                          
Special Conditions   None                                  
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