Portsmouth Rhode Island Weather Almanac  
Monday, June 7, 2021  
Clear to Partly Cloudy & Fog PM, Very Warm and Muggy  
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    June 7, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   80   70   71   +9   91   in 1925   55   in 1982  
Minimum Temperature   63   55   55   +8   63   in 2021   46   in 2007  
Average Temperature   72   63   63   +9   75   in 1999   52   in 2002  
 Month Avg Max Temperature   75.6   72.6   70.4   +5.1   85.6   in 1925   58.3   in 1907  
Month Avg Min Temperature   58.7   54.7   54.0   +4.7   61.6   in 1925   45.6   in 1945  
Month Average Temperature   67.4   64.0   62.4   +5.0   73.7   in 1925   52.4   in 1907  
HDD   0   2   3   -3   13   in 2002   0   in 2021  
Month HDD   6   21   23   -17   88   in 1907   0   in 1925  
Season HDD   5051   5113   5451   -400   6571   in 1905   4518   in 2012  
CDD   7   0   1   +6   10   in 1999   0   in    
Month CDD   23   14   7   +16   61   in 1925   0   in 2017  
Year CDD   40   22   18   +18   61   in 1925   0   in 2003  
Maximum Dew Point   71   58   60   +11   72   in 2008   44   in 1958  
Minimum Dew Point   60   51   50   +10   61   in 1995   31   in 1958  
Average  Dew Point   66   55   55   +11   66   in 2021   38   in 1958  
 Month Avg Max Dew Point   65.3   60.9   59.4   +5.9   66.0   in 2010   49.4   in 1988  
Month Avg Min Dew Point   55.6   50.7   49.3   +6.3   56.6   in 2010   40.4   in 1988  
Month Average Dew Point   60.4   55.8   54.3   +6.1   61.3   in 2010   44.9   in 1988  
Precipitation   .00   .00   .12   -.12   3.39   in 2013            
One Hour   .00   .00           .99   in 2013            
Hourly Rate   .00   .00           4.14   in 2013            
Month Precipitation   .13   .48   .81   -.68   6.84   in 1982   .00   in 2005  
Year Precipitation   17.13   19.69   19.85   -2.72   36.73   in 1983   12.64   in 1957  
Snow   0.0   0.0   #####   #####   0.0   in              
Snow Depth   0   0           43989   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 7, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   96%   92%   92%   +4%   100%   in 2017   64%   in 1988  
Minimum Humidity   71%   54%   57%   +14%   94%   in 1989   25%   in 1988  
Average Humidity   84%   73%   75%   +9%   97%   in 1989   45%   in 1988  
Maximum Barometer   30.10   29.95   30.00   +00.10   30.35   in 1974   29.54   in 1977  
Minimum Barometer   30.04   29.74   29.78   +00.26   30.16   in 1974   29.23   in 1975  
Average Barometer   30.07   29.85   29.89   +00.18   30.26   in 1974   29.40   in 1977  
Average Wind   6.9   7.0   6.4   +0.5   17.5   in 1982   2.8   in 2012  
Direction   SW   NW   SSW       NNE         WNW        
High Wind Gust   25   25   22   +3   46   in 1982   12   in 2003  
Direction   S   WNW   SW       NNE         SSE        
High Heat Index   83   69   71   +12   94   in 1999            
Low Wind Chill                             39   in 2002  
Maximum Water Temp   64.6   54.0   61.7   +2.9   68.0   in 2007   54.0   in 2020  
Minimum Water Temp   62.2   50.7   58.2   +4.0   65.3   in 2007   50.7   in 2020  
Average Water Temp   63.4   52.4   59.9   +3.5   66.7   in 2007   52.4   in 2020  
Sunrise/ AM Twilight   5:11:23 AM   4:37:46 AM            
Sunset / PM Twilight   8:17:18 PM   8:50:55 PM            
Length Of Day   15:05:55                          
Special Conditions   Fog                                  
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