Portsmouth Rhode Island Weather Almanac  
Tuesday, June 17, 2025  
Cloudy, Light Rain, Fog Late, Cooler  
  Climate Normal Period Climate Record Period
    1991 - 2020 1893 - 2025
  Jun 17           Record   Record  
Observed Daily Data   2025   2024   Norm   Depart   Highest   Lowest  
Maximum Temperature   68   75   74   -6   91   in 1894   58   in 1959  
Minimum Temperature   61   58   58   +3   68   in 1957   44   in 1954  
Average Temperature   65   67   66   -1   79   in 1957   53   in 2003  
 Month Avg Max Temperature   73.1   74.9   71.8   +1.3   78.4   in 1925   63.7   in 1907  
Month Avg Min Temperature   57.6   57.6   55.6   +2.0   59.5   in 2008   48.4   in 1907  
Month Average Temperature   65.6   66.5   63.8   +1.8   68.8   in 1925   56.2   in 1907  
High Heat Index   70   77           98   in 1894            
Low Wind Chill                             43   in 1954  
Heating Degree Days   0   0   1   -1   12   in 2003   0   in Many  
Month Heating DD   24   5   40   -16   156   in 1907   3   in 1899  
Season Heating DD   5026   4952   5499   -473   6601   in 1905   4417   in 1932    
Cooling Degree Days   0   2   3   -3   14   in 1957   0   in All    
Month Cooling DD   35   31   28   +7   81   in 1984   0   in Many    
Year Cooling DD   35   31   28   +7   86   in 1991   0   in Many    
Maximum Dew Point   66   65   63   +3   73   in 2004   42   in 1964    
Minimum Dew Point   58   53   54   +4   65   in 2001   36   in 1965    
Average  Dew Point   62   59   58   +4   68   in 2001   39   in 1964  
 Month Avg Max Dew Point   63.8   63.5   60.9   +2.9   65.8   in 1996   52.3   in 1988  
Month Avg Min Dew Point   53.2   52.8   51.0   +2.2   55.4   in 2005   42.3   in 1958  
Month Average Dew Point   58.5   58.1   55.8   +2.7   60.2   in 1996   48.3   in 1988  
Precipitation   .09   .00   .12   -.03   2.41   in 2001            
One Hour Rain   .06   .00           1.08   in 2001            
Half Hour Rain   .06   .00         .27   in 2011            
Hourly Rain Rate   .22   .00           6.78   in 2022            
Month Precipitation   .78   .77   2.01   -1.23   8.66   in 1982   T   in 1949  
Year Precipitation   21.17   29.93   21.05   +.12   38.11   in 1998   12.64   in 1957  
Snow   0.0   0.0   #N/A   #N/A   0.0   in 1900   0.0   in Many  
Snow Depth   0   0   0       0   in 2020   0   in Many  
Month Snow   0.0   0.0   T       #N/A   in #N/A   0.0   in Many  
Season Snow   11.9   12.7   33.8   21.9   84.1   in 1996   5.0   in 1998  
    Jun 17           Record Record
Observed Daily Data   2025   2024   Norm   Depart   Highest Lowest
Maximum Humidity   98%   94%   93%   +5%   100%   in 2017   57%   in 1964  
Minimum Humidity   89%   68%   59%   +30%   93%   in 1974   28%   in 1987  
Average Humidity   94%   81%   76%   +18%   96%   in 1974   44%   in 1964  
Maximum Barometer   30.10   30.26   30.05   +00.05   30.42   in 1978   29.69   in 2023  
Minimum Barometer   30.01   30.17   29.85   +00.16   30.23   in 1954   29.48   in 1958  
Average Barometer   30.06   30.22   29.95   +00.10   30.32   in 1978   29.63   in 1958  
Average Wind   5.9   9.3   5.7   +0.2   12.7   in 1986   1.2   in 1996  
Direction   E   S   S       WNW         SE        
High Wind Gust   17   25   21   -4   35   in 1964   10   in 2004  
Direction   SE   S   S       W         ESE        
Maximum Water Temp   64.4   67.5   64.9   -0.5   69.6   in 2007   60.1   in 2020  
Minimum Water Temp   63.0   65.3   61.3   +1.7   66.4   in 2007   56.5   in 2006  
Average Water Temp   63.7   66.4   63.1   +0.6   68.0   in 2007   58.8   in 2020  
Sunrise/ AM Twilight   5:10:31 AM   4:37:03 AM            
Sunset / PM Twilight   8:21:32 PM   8:55:47 PM            
Length Of Day   15:11:01                          
Special Conditions   Fog                                  
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Hour-by-Hour Weather For June 17, 2025            
Climate Weather for June 17            
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