Portsmouth Rhode Island Weather Almanac  
Thursday, June 3, 2021  
Mostly Cloudy early, Cloudy & Light Rain Day to Dense Fog PM, Seasonal Temps  
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    June 3, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   69   74   70   -1   88   in 1943   51   in 1907  
Minimum Temperature   56   56   54   +2   65   in 1918   44   in 1946  
Average Temperature   63   65   62   +1   75   in 1943   49   in 1907  
 Month Avg Max Temperature   71.3   69.0   70.0   +1.3   84.7   in 1944   53.3   in 1907  
Month Avg Min Temperature   54.7   48.0   53.3   +1.3   63.0   in 1895   44.3   in 1945  
Month Average Temperature   63.3   58.7   62.0   +1.3   74.0   in 1895   49.3   in 1907  
HDD   2   0   4   -2   16   in 1907   0   in 2020  
Month HDD   5   19   11   -6   47   in 1907   0   in 2008  
Season HDD   5050   5111   5439   -389   6548   in 1905   4483   in 2012  
CDD   0   0   1   -1   10   in 1943   0   in    
Month CDD   0   0   3   -3   27   in 1895   0   in 2021  
Year CDD   17   8   14   +9   55   in 1991   0   in 2005  
Maximum Dew Point   66   65   59   +7   67   in 1999   41   in 1953  
Minimum Dew Point   54   54   49   +5   59   in 2013   27   in 1986  
Average  Dew Point   60   60   54   +6   63   in 2013   35   in 1986  
 Month Avg Max Dew Point   60.7   54.7   59.0   +1.7   66.3   in 2013   43.3   in 1953  
Month Avg Min Dew Point   50.0   42.7   48.7   +1.3   58.3   in 2013   34.3   in 1953  
Month Average Dew Point   55.3   48.7   53.7   +1.7   62.3   in 2013   38.8   in 1953  
Precipitation   .12   T   .11   +.01   1.30   in 1959            
One Hour   .07   T           .73   in 1960            
Hourly Rate   .26   .00           4.00   in 2012            
Month Precipitation   .12   .00   .33   -.21   2.19   in 1984   .00   in 2020  
Year Precipitation   17.12   19.21   19.37   -2.25   35.86   in 1983   11.66   in 1905  
Snow   0.0   0.0   #####   #####   0.0   in              
Snow Depth   0   0           43985   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 3, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   100%   93%   91%   +9%   100%   in 2021   52%   in 1953  
Minimum Humidity   86%   67%   56%   +30%   93%   in 2013   28%   in 1953  
Average Humidity   93%   80%   73%   +20%   97%   in 2013   40%   in 1953  
Maximum Barometer   30.21   29.81   30.02   +00.19   30.49   in 1986   29.61   in 1954  
Minimum Barometer   29.96   29.56   29.81   +00.15   30.15   in 2015   29.42   in 1907  
Average Barometer   30.09   29.69   29.92   +00.17   30.23   in 1996   29.55   in 1954  
Average Wind   5.2   6.5   6.4   -1.2   13.4   in 1990   2.6   in 2016  
Direction   SSW   S   SSW       SW         SSW        
High Wind Gust   22   20   22   +0   44   in 1902   10   in 2016  
Direction   SSW   SSW   SW       NW         SE        
High Heat Index   70   76   70   +0   81   in 1961            
Low Wind Chill                             39   in 1954  
Maximum Water Temp   59.9   53.8   60.5   -0.6   67.6   in 2007   53.8   in 2020  
Minimum Water Temp   57.9   51.6   57.1   +0.8   63.9   in 2010   51.6   in 2020  
Average Water Temp   58.9   52.7   58.8   +0.1   65.3   in 2010   52.7   in 2020  
Sunrise/ AM Twilight   5:12:29 AM   4:39:07 AM            
Sunset / PM Twilight   8:14:44 PM   8:48:06 PM            
Length Of Day   15:02:15                          
Special Conditions   Dense Fog                              
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