Portsmouth Rhode Island Weather Almanac  
Monday, January 6, 2025  
Mostly Cloudy early, Cloudy, Light Snow Flurry Afternoon to Mostly Cloudy PM, Continued Windy and Cold  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2025
    January 6, 2025   Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   28   36   39   -11   57   in 2007   9   in 1896  
Minimum Temperature   21   25   26   -5   52   in 2007   -4   in 1896  
Average Temperature   25   31   33   -8   55   in 2007   3   in 1896  
 Month Avg Max Temperature   38.0   39.7   39.8   -1.8   52.7   in 2000   18.5   in 1918  
Month Avg Min Temperature   28.8   25.8   26.2   +2.7   40.0   in 2007   4.5   in 1904  
Month Average Temperature   33.8   32.8   33.2   +0.7   46.3   in 2007   12.2   in 1918  
High Heat Index   76               76   in 2024            
Low Wind Chill   10   20   14   -4             -21   in 1996  
Heating Degree Days   40   34   32   +8   62   in 1896   10   in 2007  
Month Heating DD   187   193   191   -4   317   in 1918   112   in 2007  
Season Heating DD   1839   1873   2061   -222   2764   in 1918   1523   in 2016    
Cooling Degree Days   0   0   #REF!   #REF!   0   in 1900   0   in All    
Month Cooling DD                                        
Year Cooling DD                                        
Maximum Dew Point   18   33   32   -14   57   in 2007   -3   in 1959    
Minimum Dew Point   11   20   16   -5   42   in 2007   -22   in 1959    
Average  Dew Point   15   27   24   -9   50   in 2007   -13   in 1959  
 Month Avg Max Dew Point   27.5   29.3   32.5   -5.0   49.2   in 2007   11.8   in 2018  
Month Avg Min Dew Point   19.2   18.7   16.7   +2.5   34.7   in 2023   -11.3   in 1981  
Month Average Dew Point   23.7   24.3   24.7   -1.0   40.6   in 2007   1.1   in 1981  
Precipitation   T   .08   .12   -.12   1.97   in 1929            
One Hour Rain   .00   .06           .32   in 1962            
Half Hour Rain   .00   .03         .13   in 2007            
Hourly Rain Rate   .00   .12           1.86   in 2007            
Month Precipitation   .42   .08   .72   -.30   3.54   in 1919   .00   in 1946  
Year Precipitation   .42   .08   .72   -.30   3.54   in 1919   .00   in 1946    
Snow   T   0.1   0.3   -0.3   3.2   in 2017   0.0   in      
Snow Depth   0   0   1.0   -1   16   in 1948   0   in      
Month Snow   T   0.1   1.8   -1.8   12.5   in 2018   0.0   in 2023    
Season Snow   0.2   0.2   8.9   -8.7   32.1   in 1905   T   in 2000    
    January 6, 2025     Record Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest  
Maximum Humidity   71%   95%   85%   -14%   100%   in 2014   43%   in 1959    
Minimum Humidity   60%   64%   56%   +4%   97%   in 2023   22%   in 2016    
Average Humidity   66%   80%   70%   -5%   99%   in 1998   34%   in 1959    
Maximum Barometer   29.95   30.25   30.13   -00.18   30.68   in 2000   29.62   in 1954  
Minimum Barometer   29.53   29.78   29.83   -00.30   30.37   in 2016   28.86   in 1931  
Average Barometer   29.74   30.02   29.98   -00.24   30.53   in 2000   29.53   in 1954  
Average Wind   10.0   7.0   7.5   +2.5   21.7   in 1959   1.2   in 1984  
Direction   NW   E   WNW       WNW         SSE        
High Wind Gust   25   29   24   +1   52   in 1959   12   in 2020  
Direction   NW   E   WNW       WNW         W        
Maximum Water Temp   41.0   44.2   42.1   -1.1   51.3   in 2007   31.0   in 2018  
Minimum Water Temp   39.6   41.0   40.1   -0.5   50.2   in 2007   29.2   in 2018  
Average Water Temp   40.3   42.6   41.1   -0.8   50.7   in 2007   30.1   in 2018  
Sunrise/ AM Twilight   7:11:40 AM   6:40:39 AM            
Sunset / PM Twilight   4:30:13 PM   5:01:42 PM            
Length Of Day   16:30:44                          
Special Conditions   None                                  
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