Portsmouth Rhode Island Weather Almanac  
Friday, January 3, 2025  
Clear, Windy, Dry, Colder  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2025
    January 3, 2025   Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   39   43   40   -1   62   in 2000   9   in 1904  
Minimum Temperature   30   29   26   +4   48   in 2000   2   in 1904  
Average Temperature   35   36   33   +2   55   in 2000   6   in 1904  
 Month Avg Max Temperature   44.7   41.3   40.0   +4.7   54.0   in 2000   12.7   in 1918  
Month Avg Min Temperature   27.3   27.3   26.3   +1.0   37.3   in 2023   0.7   in 1918  
Month Average Temperature   36.0   34.3   33.3   +6.0   45.7   in 2000   7.0   in 1918  
High Heat Index   76               76   in 2024            
Low Wind Chill   21   23   16   +5             -13   in 2014  
Heating Degree Days   30   29   32   -2   59   in 1904   10   in 2000  
Month Heating DD   77   92   95   -18   174   in 1918   58   in 2000  
Season Heating DD   1729   1772   1965   -236   2621   in 1918   1404   in 2016    
Cooling Degree Days   0   0   #REF!   #REF!   0   in 1900   0   in All    
Month Cooling DD                                        
Year Cooling DD                                        
Maximum Dew Point   23   31   33   -10   53   in 1960   1   in 2008    
Minimum Dew Point   19   24   17   +2   45   in 2000   -18   in 1981    
Average  Dew Point   21   28   25   -4   48   in 2000   -6   in 1981  
 Month Avg Max Dew Point   36.0   29.7   33.0   +3.0   51.7   in 1979   10.3   in 2018  
Month Avg Min Dew Point   25.0   23.3   17.0   +8.0   34.3   in 2000   -8.0   in 1999  
Month Average Dew Point   30.7   26.7   25.0   +5.7   41.8   in 1979   1.3   in 1957  
Precipitation   .00   .00   .12   -.12   1.44   in 1936            
One Hour Rain   .00   .00           .46   in 1979            
Half Hour Rain   .00   .00         .14   in 2017            
Hourly Rain Rate   .00   .00           1.08   in 2017            
Month Precipitation   .42   .00   .36   +.06   3.33   in 1919   .00   in 2024  
Year Precipitation   .42   .00   .36   +.06   3.33   in 1919   .00   in 2024    
Snow   0.0   0.0   0.3   -0.3   7.1   in 1904   0.0   in      
Snow Depth   0   0   0.9   -1   21   in 1948   0   in      
Month Snow   0.0   0.0   0.9   -0.9   10.8   in 1948   0.0   in 2025    
Season Snow   0.2   0.1   8.0   -7.8   27.3   in 1948   T   in 2000    
    January 3, 2025     Record Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest  
Maximum Humidity   69%   86%   86%   -17%   100%   in 2017   54%   in 1980    
Minimum Humidity   48%   61%   58%   -9%   92%   in 2004   28%   in 1981    
Average Humidity   59%   74%   72%   -13%   96%   in 2004   43%   in 1980    
Maximum Barometer   29.83   30.00   30.17   -00.34   30.78   in 1988   29.41   in 2010  
Minimum Barometer   29.64   29.93   29.82   -00.18   30.42   in 1993   29.06   in 1953  
Average Barometer   29.74   29.97   29.99   -00.26   30.57   in 1993   29.29   in 2010  
Average Wind   9.8   6.3   7.7   +2.1   19.7   in 2010   1.4   in 1967  
Direction   W   WNW   WNW       WNW         NNE        
High Wind Gust   28   17   25   +3   62   in 1960   9   in 1988  
Direction   W   NNW   WNW       S         NE        
Maximum Water Temp   43.0   45.0   42.5   +0.5   49.6   in 2007   36.2   in 2018  
Minimum Water Temp   41.4   44.1   40.2   +1.2   47.5   in 2007   33.4   in 2018  
Average Water Temp   42.2   44.6   41.4   +0.8   48.6   in 2007   34.8   in 2018  
Sunrise/ AM Twilight   7:11:49 AM   6:40:39 AM            
Sunset / PM Twilight   4:27:24 PM   4:59:00 PM            
Length Of Day   16:27:52                          
Special Conditions   None                                  
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