Portsmouth Rhode Island Weather Almanac  
Saturday, June 19, 2021  
Mostly Cloudy early, Partly Cloudy Day to Cloudy, Heavy Rain in Thunderstorm, Breezy & Warmer  
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    June 19, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   82   80   75   +7   89   in 1994   60   in 1958  
Minimum Temperature   64   64   59   +5   67   in 1994   45   in 1956  
Average Temperature   73   72   67   +6   78   in 1994   54   in 1950  
 Month Avg Max Temperature   76.5   74.5   72.2   +4.4   78.3   in 1925   64.7   in 1907  
Month Avg Min Temperature   58.2   56.0   56.0   +2.2   59.2   in 1899   49.6   in 1907  
Month Average Temperature   67.6   65.5   64.2   +3.5   68.8   in 1925   57.3   in 1907  
HDD   0   0   1   -1   11   in 1950   0   in 2021  
Month HDD   16   28   42   -26   156   in 1907   3   in 1899  
Season HDD   5061   5120   5470   -409   6605   in 1905   4549   in 2012  
CDD   8   7   3   +5   13   in 1994   0   in    
Month CDD   66   38   34   +32   89   in 1925   0   in 1965  
Year CDD   83   46   45   +37   97   in 1929   1   in 1948  
Maximum Dew Point   70   70   64   +6   77   in 1994   50   in 1956  
Minimum Dew Point   58   61   54   +4   64   in 2017   31   in 1986  
Average  Dew Point   64   66   59   +5   70   in 1994   43   in 1986  
 Month Avg Max Dew Point   64.5   61.4   61.2   +3.3   65.4   in 1996   53.1   in 1965  
Month Avg Min Dew Point   53.4   51.5   51.3   +2.1   54.8   in 2005   42.6   in 1958  
Month Average Dew Point   58.9   56.4   56.2   +2.8   60.0   in 1996   48.3   in 1965  
Precipitation   .93   .00   .12   +.81   2.21   in 1972            
One Hour   .88   .00           .88   in 2021            
Hourly Rate   3.89   .00           3.89   in 2021            
Month Precipitation   1.51   1.16   2.25   -.74   8.85   in 1982   .01   in 1949  
Year Precipitation   18.51   20.37   21.29   -2.78   38.24   in 1998   12.67   in 1957  
Snow   0.0   0.0   #####   #####   0.0   in              
Snow Depth   0   0           44001   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 19, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   97%   97%   94%   +3%   100%   in 2017   64%   in 1954  
Minimum Humidity   66%   67%   59%   +7%   92%   in 1958   33%   in 1986  
Average Humidity   82%   82%   77%   +5%   96%   in 2017   52%   in 1954  
Maximum Barometer   29.88   30.16   30.03   -00.15   30.47   in 2002   29.69   in 1959  
Minimum Barometer   29.69   30.06   29.83   -00.14   30.30   in 1999   29.37   in 1990  
Average Barometer   29.79   30.11   29.93   -00.15   30.37   in 2002   29.60   in 1985  
Average Wind   8.7   5.8   5.9   +2.8   12.6   in 1957   1.5   in 1996  
Direction   SW   SW   SSW       SSW         ESE        
High Wind Gust   31   22   21   +10   36   in 1979   11   in 1997  
Direction   SW   SW   SSW       NE         W        
High Heat Index   86   83   76   +10   97   in 1994            
Low Wind Chill                             41   in 1956  
Maximum Water Temp   67.3   62.8   65.4   +1.9   71.4   in 2007   61.4   in 2005  
Minimum Water Temp   63.3   59.4   61.6   +1.7   66.9   in 2007   57.0   in 2005  
Average Water Temp   65.3   61.1   63.5   +1.8   69.2   in 2007   59.2   in 2005  
Sunrise/ AM Twilight   5:11:20 AM   4:37:22 AM            
Sunset / PM Twilight   8:22:23 PM   8:56:21 PM            
Length Of Day   15:11:03                          
Special Conditions   Haze, Heavy Thunderstorm                      
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