Portsmouth Rhode Island Weather Almanac
Saturday, August 31, 2019
Mostly Cloudy early then Partly Cloudy, Light Winds and Warmer
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    August 31, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   84   76   76   +8   93   in 1973   62   in 1903  
Minimum Temperature   59   62   61   -2   72   in 2005   41   in 1965  
Average Temperature   72   69   68   +4   82   in 1973   53   in 1965  
Precipitation   .00   .00   .13   -.13   2.60   in 1954            
One Hour   .00   .00           .80   in 1954            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   0   0   1   -1   12   in 1965   0   in 2019  
CDD   7   4   4   +3   17   in 1973   0   in 2009  
Maximum Dew Point   64   66   64   +0   75   in 2010   49   in 1965  
Minimum Dew Point   52   58   55   -3   72   in 2005   33   in 1965  
Average  Dew Point   58   62   60   -2   73   in 2005   41   in 1965  
Maximum Humidity   89%   89%   93%   -4%   100%   in 2004   62%   in 1953  
Minimum Humidity   36%   58%   58%   -22%   90%   in 1950   31%   in 1968  
Average Humidity   63%   74%   76%   -13%   95%   in 1950   50%   in 1953  
Maximum Barometer   30.29   30.34   30.11   +00.18   30.54   in 2002   29.81   in 1984  
Minimum Barometer   30.07   30.18   29.89   +00.18   30.29   in 2002   28.65   in 1954  
Average Barometer   30.18   30.26   30.00   +00.18   30.42   in 2002   29.26   in 1954  
Average Wind   3.9   7.5   6.2   -2.3   27.5   in 1954   1.3   in 1990  
Direction   NW   NE   SSW       SW         SW        
High Wind Gust   18   18   22   -4   109   in 1954   11   in 1950  
Direction   #N/A   NE   SSW       ESE         SE        
High Heat Index   84   77   79   +5   104   in 1973            
Wind Chill                                      
Maximum Water Temp   70.9   74.2   70.8   +0.1   74.5   in 2010   66.9   in 2003  
Minimum Water Temp   68.6   71.8   68.5   +0.1   71.8   in 2018   64.2   in 2003  
Average Water Temp   69.8   73.0   69.6   +0.1   73.0   in 2018   65.6   in 2003  
Sunrise/ AM Twilight   6:11:16 AM   5:42:52 AM            
Sunset / PM Twilight   7:19:21 PM   7:47:44 PM            
Length Of Day   13:08:05                          
Special Conditions   None                                  
Comments      
    August 31, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   80.7   82.2   78.3   +2.5   82.8   in 2016   73.0   in 1903  
Avg Minimum Temperature   63.8   68.0   63.4   +0.4   68.0   in 2018   57.6   in 1964  
Average Temperature   72.3   75.1   70.8   +1.5   75.1   in 2018   65.8   in 1964  
Total Precipitation   2.60   3.71   3.81   -1.21   11.81   in 1985   .33   in 1993  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   3   0   6   -3   38   in 1905   0   in 2018  
Total CDD   238   320   194   +44   320   in 2018   61   in 1964  
Avg Maximum Dew Point   68.3   72.2   66.5   +1.8   72.2   in 2018   60.8   in 1964  
Avg Minimum Dew Point   58.8   65.0   58.4   +0.4   65.0   in 2018   50.8   in 1964  
Average  Dew Point   63.5   68.6   62.5   +1.1   68.6   in 2018   55.8   in 1964  
    August 31, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   37.83   28.84   31.49   +6.34   45.30   in 1998   16.54   in 1957  
Total Snow (since Jul 1 19)   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD (since Jul 1 19)   3   0   6   -3   38   in 1905   0   in 2018  
Total CDD (since Jan 1)   658   648   498   +160   691   in 2010   253   in 1902  
                             
Hour-by-Hour Weather For August 31, 2019  
Climate Weather for August 31  
Weather History For August 31  
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