Portsmouth Rhode Island Weather Almanac  
Saturday, June 26, 2021  
Dense Fog early then Cloudy & Fog, Warmer and Muggy  
   Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    June 26, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   76   80   77   -1   95   in 1952   61   in 1974  
Minimum Temperature   66   66   62   +4   71   in 1909   46   in 1979  
Average Temperature   71   73   69   +2   82   in 1952   58   in 1979  
 Month Avg Max Temperature   76.4   76.5   73.2   +3.2   78.6   in 1957   65.7   in 1903  
Month Avg Min Temperature   58.9   58.3   57.2   +1.7   60.5   in 2001   52.2   in 1907  
Month Average Temperature   67.9   67.7   65.3   +2.6   68.7   in 1949   59.9   in 1903  
HDD   0   0   1   -1   7   in 1979   0   in 2021  
Month HDD   19   28   49   -30   159   in 1907   5   in 1899  
Season HDD   5064   5120   5477   -413   6619   in 1905   4549   in 2012  
CDD   6   8   4   +2   17   in 1952   0   in    
Month CDD   94   97   60   +34   129   in 1949   5   in 1972  
Year CDD   111   105   72   +6   142   in 1957   5   in 1972  
Maximum Dew Point   72   70   66   +6   77   in 1998   46   in 1965  
Minimum Dew Point   64   60   57   +7   66   in 2013   37   in 1965  
Average  Dew Point   68   65   62   +6   72   in 1998   42   in 1965  
 Month Avg Max Dew Point   65.3   64.0   62.3   +3.0   65.3   in 2021   54.2   in 1965  
Month Avg Min Dew Point   54.7   54.0   52.5   +2.2   56.7   in 2010   44.2   in 1958  
Month Average Dew Point   60.0   59.0   57.3   +2.7   61.0   in 2010   49.6   in 1965  
Precipitation   .01   .01   .12   -.11   2.20   in 1988            
One Hour   .01   .01           .69   in 1997            
Hourly Rate   .00   .00           9.60   in 2004            
Month Precipitation   2.05   1.17   3.09   -1.04   8.93   in 1982   .05   in 1949  
Year Precipitation   19.05   20.38   22.13   -3.08   38.25   in 1998   12.67   in 1957  
Snow   0.0   0.0   #####   #####   0.0   in              
Snow Depth   0   0           44008   in              
Month Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in    
Season Snow   27.7   12.9   33.5   -5.8   84.1   in 1996   5.0   in 1998  
    June 26, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   100%   95%   92%   +8%   100%   in 2021   67%   in 1960  
Minimum Humidity   87%   68%   57%   +30%   93%   in 1968   28%   in 1951  
Average Humidity   94%   82%   74%   +19%   97%   in 1968   51%   in 1960  
Maximum Barometer   30.30   29.97   30.02   +00.28   30.49   in 1979   29.69   in 2012  
Minimum Barometer   30.21   29.87   29.83   +00.38   30.27   in 2001   29.25   in 1902  
Average Barometer   30.26   29.92   29.93   +00.33   30.38   in 1979   29.61   in 1988  
Average Wind   6.8   5.5   5.8   +1.0   11.4   in 1968   2.1   in 1965  
Direction   SW   SW   SW       ENE         NW        
High Wind Gust   24   21   21   +3   39   in 1945   10   in 1959  
Direction   SW   S   S       NE         SSE        
High Heat Index   79   82   80   -1   105   in 1952            
Low Wind Chill                             44   in 1979  
Maximum Water Temp   66.2   63.9   67.7   -1.5   75.3   in 2007   62.6   in 2009  
Minimum Water Temp   65.1   59.7   63.4   +1.7   69.8   in 2007   59.3   in 2005  
Average Water Temp   65.7   61.8   65.6   +0.1   72.5   in 2007   61.6   in 2009  
Sunrise/ AM Twilight   5:13:27 AM   4:39:33 AM            
Sunset / PM Twilight   8:23:16 PM   8:57:10 PM            
Length Of Day   15:09:49                          
Special Conditions   Dense Fog                              
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