Portsmouth Rhode Island Weather Almanac  
Friday, January 17, 2025  
Partly Cloudy early, Clear Day to Partly Cloudy PM, Light Winds, Continued Cold  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2025
    January 17, 2025   Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   37   26   37   +0   58   in 1995   18   in 1971  
Minimum Temperature   22   18   24   -2   41   in 1995   -5   in 1982  
Average Temperature   30   22   31   -1   50   in 1995   11   in 1971  
 Month Avg Max Temperature   35.5   40.6   38.8   -3.3   46.9   in 2007   24.5   in 1981  
Month Avg Min Temperature   24.4   27.2   25.1   -0.6   34.5   in 2007   8.1   in 1981  
Month Average Temperature   30.2   34.3   32.1   -1.8   40.8   in 2007   16.6   in 1981  
High Heat Index   76               76   in 2024            
Low Wind Chill   13   6   8   +5             -30   in 1982  
Heating Degree Days   35   43   34   +1   54   in 1971   15   in 1995  
Month Heating DD   591   522   560   +31   823   in 1981   411   in 2007  
Season Heating DD   2243   2202   2430   -187   3165   in 1918   1832   in 2016    
Cooling Degree Days   0   0   #REF!   #REF!   0   in 1900   0   in All    
Month Cooling DD                                        
Year Cooling DD                                        
Maximum Dew Point   27   19   30   -3   56   in 1995   -3   in 1971    
Minimum Dew Point   18   7   13   +5   38   in 1995   -21   in 1982    
Average  Dew Point   23   13   22   +1   47   in 1995   -9   in 1971  
 Month Avg Max Dew Point   24.3   33.7   31.4   -7.1   41.6   in 2007   11.7   in 1981  
Month Avg Min Dew Point   15.6   20.1   15.4   +0.3   28.4   in 2023   -7.3   in 1981  
Month Average Dew Point   20.2   27.2   23.5   -3.2   34.2   in 2023   2.2   in 1981  
Precipitation   .00   .00   .12   -.12   2.08   in 1909            
One Hour Rain   .00   .00           .38   in 2022            
Half Hour Rain   .00   .00         .22   in 2022            
Hourly Rain Rate   .00   .00           .65   in 2022            
Month Precipitation   .46   4.93   2.06   -1.60   7.01   in 1979   .12   in 1984  
Year Precipitation   .46   4.93   2.06   -1.60   7.01   in 1979   .12   in 1984    
Snow   0.0   0.0   0.3   -0.3   9.6   in 1956   0.0   in      
Snow Depth   0   0   1.3   -1   13   in 1912   0   in      
Month Snow   0.4   5.6   5.1   -4.7   25.8   in 1996   0.0   in 2007    
Season Snow   0.6   5.7   12.2   -11.6   41.6   in 1996   0.2   in 1914    
    January 17, 2025     Record Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest  
Maximum Humidity   88%   82%   83%   +5%   100%   in 2018   52%   in 1972    
Minimum Humidity   49%   58%   50%   -1%   91%   in 1996   24%   in 2019    
Average Humidity   69%   70%   66%   +2%   96%   in 1996   43%   in 2007    
Maximum Barometer   30.16   30.05   30.14   +00.02   30.76   in 2007   29.33   in 1958  
Minimum Barometer   29.82   29.70   29.82   +00.00   30.29   in 2009   29.08   in 1959  
Average Barometer   29.99   29.88   29.98   +00.01   30.49   in 2007   29.26   in 1958  
Average Wind   5.4   11.1   8.8   -3.4   24.3   in 2000   3.0   in 1978  
Direction   NW   W   WNW       NW         ENE        
High Wind Gust   17   32   27   -10   50   in 2000   12   in 1978  
Direction   NNW   NW   WNW       WNW         ENE        
Maximum Water Temp   39.6   43.5   40.5   -0.9   45.3   in 2007   35.8   in 2009  
Minimum Water Temp   36.9   39.6   37.8   -0.9   43.0   in 2021   31.7   in 2004  
Average Water Temp   38.3   41.6   39.1   -0.8   43.7   in 2021   35.2   in 2004  
Sunrise/ AM Twilight   7:08:09 AM   6:37:50 AM            
Sunset / PM Twilight   4:42:09 PM   5:12:57 PM            
Length Of Day   16:42:45                          
Special Conditions   None                                  
Comments                                      
Hour-by-Hour Weather For January 17, 2025
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