Portsmouth Rhode Island Weather Almanac
Saturday, August 29, 2020
Cloudy, Light Rain and Fog, Breezy, Warm and Humid
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    August 29, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   77   83   77   +0   93   in 1953   63   in 2006  
Minimum Temperature   69   66   61   +8   73   in 2018   46   in 1982  
Average Temperature   73   75   69   +4   83   in 1948   57   in 1986  
Precipitation   .08   .42   .13   -.05   3.97   in 1997            
One Hour   .04   .23           2.44   in 1997            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0           0   in            
HDD   0   0   1   -1   8   in 1986   0   in 2020  
CDD   8   10   4   +4   18   in 1948   0   in 2017  
Maximum Dew Point   74   71   64   +10   78   in 2018   44   in 1965  
Minimum Dew Point   67   58   56   +11   72   in 2018   35   in 1982  
Average  Dew Point   71   65   60   +11   75   in 2018   40   in 1965  
Maximum Humidity   96%   96%   93%   +3%   100%   in 2017   70%   in 1965  
Minimum Humidity   89%   52%   60%   +29%   91%   in 1987   35%   in 1982  
Average Humidity   93%   74%   76%   +16%   96%   in 1987   54%   in 1982  
Maximum Barometer   29.80   29.96   30.07   -00.27   30.37   in 1941   29.73   in 1962  
Minimum Barometer   29.44   29.75   29.86   -00.42   30.23   in 2000   29.43   in 1990  
Average Barometer   29.62   29.86   29.97   -00.35   30.27   in 2000   29.62   in 2020  
Average Wind   6.8   7.6   6.2   +0.6   17.3   in 1962   1.3   in 1964  
Direction   S   NNW   S       NNE         S        
High Wind Gust   27   17   22   +5   42   in 1962   12   in 2007  
Direction   S   NNW   S       NNE         SSE        
High Heat Index   81   85   78   +3   103   in 2018            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   64.8   70.7   70.3   -5.5   74.4   in 2018   64.8   in 2020  
Minimum Water Temp   63.7   68.9   68.0   -4.3   72.3   in 2018   64.1   in 2003  
Average Water Temp   64.3   69.8   69.2   -4.9   73.4   in 2018   64.3   in 2020  
Sunrise/ AM Twilight   6:09:14 AM   5:40:43 AM            
Sunset / PM Twilight   7:22:37 PM   7:51:08 PM            
Length Of Day   13:13:23                          
Special Conditions   Fog                                  
Comments      
    August 29, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   83.0   80.6   78.4   +4.6   83.0   in 2016   73.5   in 1964  
Avg Minimum Temperature   67.1   64.2   63.6   +3.5   68.1   in 2018   56.9   in 1964  
Average Temperature   75.2   72.7   71.0   +4.3   75.3   in 2018   65.6   in 1964  
Total Precipitation   1.65   2.60   3.55   -1.90   11.69   in 1946   .33   in 1993  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   3   4   -4   36   in 1905   0   in 2020  
Total CDD   297   226   186   +111   300   in 2018   43   in 1964  
Avg Maximum Dew Point   70.8   68.5   66.7   +4.1   72.3   in 2018   60.1   in 1964  
Avg Minimum Dew Point   62.2   59.2   58.6   +3.6   65.2   in 2018   49.8   in 1964  
Average  Dew Point   66.5   63.8   62.7   +3.9   68.8   in 2018   54.9   in 1964  
    August 29, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   24.03   37.83   31.36   -7.33   45.24   in 1998   16.49   in 1957  
Total Snow (since Jul 1 20)   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD (since Jul 1 20)   0   3   7   -7   36   in 1905   0   in 2020  
Total CDD (since Jan 1)   761   646   490   +271   761   in 2020   241   in 1902  
                             
Hour-by-Hour Weather For August 29, 2020  
Climate Weather for August 29  
Weather History For August 29  
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