Portsmouth Rhode Island Weather Almanac  
Monday, January 13, 2025  
Mostly Cloudy, Light Winds, Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2025
    January 13, 2025   Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   41   55   38   +3   58   in 1932   8   in 1914  
Minimum Temperature   27   36   24   +3   47   in 1932   -5   in 1912  
Average Temperature   34   46   31   +3   53   in 1932   4   in 1912  
 Month Avg Max Temperature   35.9   42.7   39.2   -3.2   49.2   in 2007   23.6   in 1981  
Month Avg Min Temperature   25.3   29.1   25.4   -0.1   37.2   in 2007   6.6   in 1981  
Month Average Temperature   30.9   36.0   32.4   -1.5   43.3   in 2007   15.4   in 1981  
High Heat Index   76               76   in 2024            
Low Wind Chill   26   28   13   +13             -19   in 1912  
Heating Degree Days   31   19   34   -3   61   in 1912   12   in 1932  
Month Heating DD   443   377   424   +19   645   in 1981   282   in 2007  
Season Heating DD   2095   2057   2294   -199   3016   in 1918   1714   in 2016    
Cooling Degree Days   0   0   #REF!   #REF!   0   in 1900   0   in All    
Month Cooling DD                                        
Year Cooling DD                                        
Maximum Dew Point   30   54   31   -1   55   in 2023   -8   in 1981    
Minimum Dew Point   21   23   14   +7   43   in 2013   -13   in 1981    
Average  Dew Point   26   39   23   +3   46   in 2023   -11   in 1981  
 Month Avg Max Dew Point   25.0   35.5   31.8   -6.8   43.6   in 2007   9.2   in 1981  
Month Avg Min Dew Point   16.6   22.6   15.8   +0.8   29.4   in 2023   -10.3   in 1981  
Month Average Dew Point   21.1   29.3   23.9   -2.8   35.5   in 2023   -0.6   in 1981  
Precipitation   .00   1.04   .12   -.12   1.62   in 1948            
One Hour Rain   .00   .25           .30   in 2023            
Half Hour Rain   .00   .13         .18   in 2023            
Hourly Rain Rate   .00   1.04           2.40   in 2018            
Month Precipitation   .46   4.29   1.58   -1.12   5.05   in 1979   .09   in 1984  
Year Precipitation   .46   4.29   1.58   -1.12   5.05   in 1979   .09   in 1984    
Snow   0.0   0.0   0.3   -0.3   6.0   in 1964   0.0   in      
Snow Depth   T   0   1.3   -1   18   in 1904   0   in      
Month Snow   0.4   3.4   3.9   -3.5   25.8   in 1996   0.0   in 2007    
Season Snow   0.6   3.5   11.0   -10.4   41.6   in 1996   0.2   in 1914    
    January 13, 2025     Record Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest  
Maximum Humidity   86%   99%   87%   -1%   100%   in 2013   43%   in 1981    
Minimum Humidity   62%   54%   56%   +6%   100%   in 2005   24%   in 1981    
Average Humidity   74%   77%   71%   +3%   100%   in 2005   34%   in 1981    
Maximum Barometer   30.02   29.91   30.16   -00.14   30.84   in 1968   29.49   in 1956  
Minimum Barometer   29.83   29.16   29.82   +00.01   30.56   in 1984   29.15   in 2002  
Average Barometer   29.93   29.54   29.99   -00.07   30.66   in 1984   29.44   in 2002  
Average Wind   4.8   17.0   8.2   -3.4   17.0   in 2024   2.6   in 1966  
Direction   SSW   W   WNW       W         W        
High Wind Gust   21   54   27   -6   54   in 2024   12   in 1968  
Direction   SSW   SE   NW       SE         N        
Maximum Water Temp   40.5   46.2   41.9   -1.4   48.7   in 2012   37.4   in 2010  
Minimum Water Temp   39.4   44.8   39.7   -0.3   46.3   in 2012   34.5   in 2019  
Average Water Temp   40.0   45.5   40.7   -0.8   47.5   in 2012   36.1   in 2019  
Sunrise/ AM Twilight   7:09:58 AM   6:39:22 AM            
Sunset / PM Twilight   4:37:34 PM   5:08:38 PM            
Length Of Day   16:38:09                          
Special Conditions   None                                  
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