Portsmouth Rhode Island Weather Almanac  
Friday, August 27, 2021  
Clear to P Cloudy PM, Very Light Rain & Winds &  Continued Hot and Very Humid w/Haze & Fog  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2021
    August 27, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   91   76   78   +13   97   in 1948   62   in 1927  
Minimum Temperature   72   61   63   +9   73   in 1948   49   in 1954  
Average Temperature   82   69   70   +12   85   in 1948   59   in 1927  
 Month Avg Max Temperature   81.9   83.2   78.8   +3.1   83.2   in 2020   73.3   in 1964  
Month Avg Min Temperature   67.2   67.1   64.0   +3.2   67.7   in 2018   56.9   in 1964  
Month Average Temperature   74.9   75.4   71.4   +3.5   75.6   in 1939   65.4   in 1964  
High Heat Index   104   74   80   +24   104   in 2021            
Low Wind Chill                             #N/A   in #N/A  
HDD   0   0   0   +0   6   in 1927   0   in    
Month HDD   0   0   0   +0   31   in 1905   0   in 2021  
Season HDD   9   0   3   +6   37   in 1914   0   in 2020  
CDD   17   4   6   +11   20   in 1948   0   in 2019  
Month CDD   266   280   187   +79   285   in 1939   36   in 1964  
Year CDD   656   744   515   +141   744   in 2020   233   in 1902  
Maximum Dew Point   79   64   66   +13   79   in 2021   51   in 1968  
Minimum Dew Point   70   47   58   +12   70   in 2021   41   in 1989  
Average  Dew Point   75   56   62   +13   75   in 2021   46   in 1968  
 Month Avg Max Dew Point   72.7   70.8   68.2   +4.5   72.7   in 2021   59.6   in 1964  
Month Avg Min Dew Point   64.6   62.1   59.9   +4.7   64.8   in 2018   49.3   in 1964  
Month Average Dew Point   68.7   66.4   64.0   +4.6   68.7   in 2021   54.5   in 1964  
Precipitation   T   .17   .11   .00   2.28   in 1922            
One Hour   T   .09           .49   in 1972            
Hourly Rate   .00   .13           2.14   in 2011            
Month Precipitation   6.03   1.57   3.19   +2.84   11.69   in 1946   .27   in 1993  
Year Precipitation   28.86   23.95   28.84   +.02   44.79   in 1998   16.49   in 1957  
Snow   0.0   0.0   #N/A   #N/A   #N/A   in #N/A            
Snow Depth   0   0           #N/A   in              
Month Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in    
Season Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in #N/A  
    August 27, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   96%   95%   93%   +3%   100%   in 2004   74%   in 1980  
Minimum Humidity   65%   52%   59%   +6%   94%   in 1976   33%   in 1968  
Average Humidity   81%   74%   76%   +4%   97%   in 1976   55%   in 1968  
Maximum Barometer   30.15   29.87   30.09   +00.06   30.34   in 1944   29.82   in 1965  
Minimum Barometer   30.03   29.63   29.90   +00.13   30.21   in 2017   29.51   in 1986  
Average Barometer   30.09   29.75   29.99   +00.10   30.24   in 2017   29.72   in 1986  
Average Wind   2.6   4.0   5.2   -2.6   11.3   in 1974   2.4   in 1992  
Direction   WNW   NW   SSW       SSW         SSW        
High Wind Gust   11   19   19   -8   32   in 1974   11   in 2021  
Direction   WNW   SSE   SSW       SSW         WNW        
Maximum Water Temp   76.8   64.4   71.3   +5.5   76.8   in 2021   64.4   in 2020  
Minimum Water Temp   73.9   62.8   68.4   +5.5   73.9   in 2021   62.7   in 2003  
Average Water Temp   75.4   63.6   69.8   +5.5   75.4   in 2021   63.6   in 2020  
Sunrise/ AM Twilight   6:07:29 AM   5:38:52 AM            
Sunset / PM Twilight   7:25:25 PM   7:54:03 PM            
Length Of Day   13:17:56                          
Special Conditions   Fog, Haze                              
Comments   Record breaking high Dew Points and heat Index          
Hour-by-Hour Weather For August 27, 2021            
Climate Weather for August 27            
Weather History For August 27            
Weather Calendar            
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