Portsmouth Rhode Island Weather Almanac  
Tuesday, January 7, 2025  
Partly Cloudy to Clear PM, Continued Very Windy and Colder  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2025
    January 7, 2025   Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   27   35   39   -12   58   in 1907   13   in 1912  
Minimum Temperature   16   25   25   -9   43   in 1946   -1   in 1896  
Average Temperature   22   30   32   -10   48   in 2012   8   in 1912  
 Month Avg Max Temperature   36.4   39.0   39.7   -3.3   52.4   in 2007   20.9   in 1918  
Month Avg Min Temperature   27.0   25.7   26.0   +1.0   40.1   in 2007   6.3   in 1904  
Month Average Temperature   32.1   32.4   33.0   -0.9   46.4   in 2007   14.3   in 1904  
High Heat Index   76               76   in 2024            
Low Wind Chill   -1   12   13   -14             -22   in 2018  
Heating Degree Days   43   35   33   +10   57   in 1912   17   in 2012  
Month Heating DD   230   228   224   +6   355   in 1904   130   in 2007  
Season Heating DD   1882   1908   2094   -212   2797   in 1918   1551   in 2016    
Cooling Degree Days   0   0   #REF!   #REF!   0   in 1900   0   in All    
Month Cooling DD                                        
Year Cooling DD                                        
Maximum Dew Point   15   34   32   -17   53   in 1995   -9   in 1973    
Minimum Dew Point   8   22   16   -8   37   in 1998   -14   in 1973    
Average  Dew Point   12   28   24   -12   44   in 1998   -12   in 1973  
 Month Avg Max Dew Point   25.7   30.0   32.4   -6.7   48.1   in 2007   12.6   in 2018  
Month Avg Min Dew Point   17.6   19.1   16.6   +1.0   34.0   in 2023   -9.1   in 1981  
Month Average Dew Point   22.0   24.9   24.6   -2.6   39.7   in 2007   3.5   in 1981  
Precipitation   .00   .57   .13   -.13   1.94   in 1958            
One Hour Rain   .00   .07           .45   in 1958            
Half Hour Rain   .00   .04         .10   in 2009            
Hourly Rain Rate   .00   .11           .92   in 2009            
Month Precipitation   .42   .65   .85   -.43   3.54   in 1919   .00   in 1928  
Year Precipitation   .42   .65   .85   -.43   3.54   in 1919   .00   in 1928    
Snow   0.0   3.3   0.3   -0.3   12.7   in 2017   0.0   in      
Snow Depth   0   3   0.9   -1   15   in 1948   0   in      
Month Snow   T   3.4   2.1   -2.1   15.9   in 2017   0.0   in 2023    
Season Snow   0.2   3.5   9.2   -9.0   32.1   in 1905   T   in 2000    
    January 7, 2025     Record Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest  
Maximum Humidity   72%   99%   86%   -14%   100%   in 2005   41%   in 1973    
Minimum Humidity   52%   90%   57%   -5%   96%   in 1998   23%   in 2016    
Average Humidity   62%   95%   71%   -9%   98%   in 1998   34%   in 1973    
Maximum Barometer   29.76   29.90   30.08   -00.32   30.69   in 1991   29.55   in 1955  
Minimum Barometer   29.56   29.43   29.72   -00.16   30.29   in 2018   28.96   in 1958  
Average Barometer   29.66   29.67   29.90   -00.24   30.43   in 1991   29.34   in 1969  
Average Wind   18.2   15.0   9.1   +9.1   23.3   in 1952   1.2   in 1963  
Direction   NW   NE   NW       N         SE        
High Wind Gust   39   40   28   +11   61   in 1905   12   in 2016  
Direction   NNW   NNW   WNW       SE         SW        
Maximum Water Temp   40.6   44.7   42.1   -1.5   50.9   in 2007   32.1   in 2018  
Minimum Water Temp   37.8   43.9   39.5   -1.7   49.5   in 2007   28.1   in 2018  
Average Water Temp   39.2   44.3   40.8   -1.6   50.2   in 2007   30.1   in 2018  
Sunrise/ AM Twilight   7:11:32 AM   6:40:34 AM            
Sunset / PM Twilight   4:31:13 PM   5:02:38 PM            
Length Of Day   16:31:44                          
Special Conditions   None                                  
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