Portsmouth Rhode Island Weather Almanac  
Sunday, January 5, 2025  
Mostly Cloudy early then Partly Cloudy, Continued Windy and Cold  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2025
    January 5, 2025   Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   35   35   40   -5   57   in 1950   17   in 1904  
Minimum Temperature   26   21   26   +0   46   in 2007   -5   in 1981  
Average Temperature   31   28   33   -2   52   in 1950   8   in 1904  
 Month Avg Max Temperature   40.0   40.4   40.0   +0.0   54.4   in 2000   16.0   in 1918  
Month Avg Min Temperature   26.0   26.0   26.2   -0.2   38.6   in 1950   2.6   in 1918  
Month Average Temperature   33.0   33.2   33.2   +2.4   45.6   in 2000   9.6   in 1918  
High Heat Index   76               76   in 2024            
Low Wind Chill   16   7   14   +2             -24   in 1981  
Heating Degree Days   34   37   32   +2   57   in 1904   13   in 1950  
Month Heating DD   147   159   159   -12   277   in 1918   97   in 2000  
Season Heating DD   1799   1839   2029   -230   2724   in 1918   1489   in 2016    
Cooling Degree Days   0   0   #REF!   #REF!   0   in 1900   0   in All    
Month Cooling DD                                        
Year Cooling DD                                        
Maximum Dew Point   19   21   32   -13   55   in 1993   -4   in 1989    
Minimum Dew Point   16   10   16   +0   42   in 2007   -21   in 1981    
Average  Dew Point   18   16   24   -6   48   in 2007   -11   in 1981  
 Month Avg Max Dew Point   29.4   28.6   32.6   -3.2   48.6   in 2000   11.2   in 1981  
Month Avg Min Dew Point   20.8   18.4   16.8   +4.0   35.2   in 2023   -12.8   in 1981  
Month Average Dew Point   25.4   23.8   24.8   +0.6   41.2   in 2023   -0.8   in 1981  
Precipitation   .00   .00   .12   -.12   1.15   in 1897            
One Hour Rain   .00   .00           .29   in 1993            
Half Hour Rain   .00   .00         .19   in 2022            
Hourly Rain Rate   .00   .00           2.13   in 2022            
Month Precipitation   .42   .00   .60   -.18   3.53   in 1919   .00   in 2024  
Year Precipitation   .42   .00   .60   -.18   3.53   in 1919   .00   in 2024    
Snow   0.0   0.0   0.3   -0.3   3.0   in 1952   0.0   in      
Snow Depth   0   0   1.1   -1   17   in 1948   0   in      
Month Snow   0.0   0.0   1.5   -1.5   12.5   in 2018   0.0   in 2025    
Season Snow   0.2   0.1   8.6   -8.4   31.1   in 1905   T   in 2000    
    January 5, 2025     Record Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest  
Maximum Humidity   67%   75%   81%   -14%   100%   in 2007   46%   in 1989    
Minimum Humidity   50%   48%   53%   -3%   97%   in 2023   25%   in 1959    
Average Humidity   59%   62%   67%   -8%   98%   in 2023   37%   in 1989    
Maximum Barometer   29.94   30.22   30.12   -00.18   30.81   in 1935   29.63   in 2010  
Minimum Barometer   29.82   30.08   29.80   +00.02   30.44   in 1979   29.27   in 1985  
Average Barometer   29.88   30.15   29.96   -00.08   30.53   in 1979   29.48   in 1985  
Average Wind   13.1   13.4   8.5   +4.6   25.3   in 1959   2.8   in 1984  
Direction   WNW   NW   WNW       WNW         SE        
High Wind Gust   36   33   26   +10   61   in 1959   13   in 1974  
Direction   WNW   NNW   WNW       WNW         WNW        
Maximum Water Temp   41.4   43.5   42.2   -0.8   50.4   in 2007   35.5   in 2018  
Minimum Water Temp   39.9   41.4   40.1   -0.2   48.7   in 2007   31.0   in 2018  
Average Water Temp   40.7   42.5   41.2   -0.6   49.5   in 2007   33.3   in 2018  
Sunrise/ AM Twilight   7:11:46 AM   6:40:41 AM            
Sunset / PM Twilight   4:29:16 PM   5:00:47 PM            
Length Of Day   16:29:45                          
Special Conditions   None                                  
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