Portsmouth Rhode Island Weather Almanac  
Sunday, June 6, 2021  
Partly Cloudy early, Clear Day to Partly Cloudy PM and Hot  
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    June 6, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   88   75   71   +17   93   in 1899   52   in 1926  
Minimum Temperature   66   62   55   +11   71   in 1925   41   in 1964  
Average Temperature   77   69   63   +14   81   in 1925   50   in 1926  
 Month Avg Max Temperature   74.8   73.0   70.3   +4.5   84.7   in 1925   56.8   in 1907  
Month Avg Min Temperature   58.0   54.7   53.8   +4.2   62.5   in 1925   45.0   in 1945  
Month Average Temperature   66.7   64.2   62.3   +4.3   73.7   in 1925   51.5   in 1907  
HDD   0   0   3   -3   15   in 1926   0   in 2021  
Month HDD   6   19   20   -14   81   in 1907   0   in 1925  
Season HDD   5051   5111   5448   -397   6558   in 1905   4514   in 2012  
CDD   12   4   1   +11   16   in 1925   0   in    
Month CDD   16   14   6   +10   52   in 1925   0   in 2017  
Year CDD   33   22   17   +11   55   in 1991   0   in 2003  
Maximum Dew Point   69   69   60   +9   70   in 2019   47   in 1991  
Minimum Dew Point   61   57   50   +11   61   in 2021   27   in 1987  
Average  Dew Point   65   63   55   +10   65   in 2021   42   in 1987  
 Month Avg Max Dew Point   64.3   61.3   59.3   +5.0   67.8   in 2010   49.3   in 1976  
Month Avg Min Dew Point   54.8   50.7   49.2   +5.7   58.3   in 2010   39.0   in 1964  
Month Average Dew Point   59.6   56.0   54.2   +5.4   63.1   in 2010   45.0   in 1964  
Precipitation   .00   .35   .12   -.12   1.64   in 1975            
One Hour   .00   .20           .47   in 1975            
Hourly Rate   .00   1.25           1.66   in 2019            
Month Precipitation   .13   .48   .69   -.56   6.78   in 1982   .00   in 2005  
Year Precipitation   17.13   19.69   19.73   -2.60   36.73   in 1983   12.34   in 1905  
Snow   0.0   0.0   #####   #####   0.0   in              
Snow Depth   0   0           43988   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 6, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   87%   99%   92%   -5%   100%   in 2019   59%   in 1988  
Minimum Humidity   44%   79%   57%   -13%   96%   in 1982   27%   in 1987  
Average Humidity   66%   89%   75%   -9%   98%   in 1982   47%   in 1988  
Maximum Barometer   30.06   29.88   29.99   +00.07   30.41   in 1908   29.61   in 2010  
Minimum Barometer   29.92   29.65   29.78   +00.14   30.18   in 1997   29.34   in 1975  
Average Barometer   29.99   29.77   29.89   +00.10   30.23   in 1999   29.48   in 2010  
Average Wind   5.3   7.5   6.5   -1.2   16.2   in 2000   2.4   in 1989  
Direction   WNW   SSW   S       NNE         SSE        
High Wind Gust   29   24   23   +6   43   in 1988   12   in 2011  
Direction   SW   N   SW       N         NNE        
High Heat Index   93   77   71   +22   93   in 2021            
Low Wind Chill                             33   in 1964  
Maximum Water Temp   64.6   54.9   60.9   +3.7   67.3   in 2010   54.9   in 2020  
Minimum Water Temp   59.4   52.3   57.6   +1.8   65.1   in 2010   52.3   in 2020  
Average Water Temp   62.0   53.6   59.3   +2.7   66.2   in 2010   53.6   in 2020  
Sunrise/ AM Twilight   5:11:36 AM   4:38:03 AM            
Sunset / PM Twilight   8:16:41 PM   8:50:15 PM            
Length Of Day   15:05:05                          
Special Conditions   None                              
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