Portsmouth Rhode Island Weather Almanac
Sunday, September 8, 2019
Clear early then Partly Cloudy and Warmer
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    September 8, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   76   68   74   +2   88   in 1945   62   in 1932  
Minimum Temperature   60   59   59   +1   70   in 2015   46   in 1952  
Average Temperature   68   64   66   +2   79   in 2015   56   in 1952  
Precipitation   .00   .00   .13   -.13   1.84   in 2011            
One Hour   .00   .00           .69   in 2011            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   0   1   1   -1   9   in 1952   0   in 2019  
CDD   3   0   3   +0   14   in 2015   0   in 2018  
Maximum Dew Point   59   62   62   -3   74   in 2012   48   in 1980  
Minimum Dew Point   54   51   53   +1   69   in 2004   37   in 1955  
Average  Dew Point   57   57   58   -1   71   in 2004   44   in 1980  
Maximum Humidity   86%   91%   92%   -6%   100%   in 2006   60%   in 1983  
Minimum Humidity   51%   69%   59%   -8%   96%   in 1993   30%   in 1980  
Average Humidity   69%   80%   75%   -7%   98%   in 1993   48%   in 1983  
Maximum Barometer   30.16   30.20   30.12   +00.04   30.54   in 1984   29.59   in 1998  
Minimum Barometer   29.85   30.08   29.93   -00.08   30.27   in 1984   29.47   in 1998  
Average Barometer   30.01   30.14   30.03   -00.02   30.41   in 1984   29.53   in 1998  
Average Wind   6.7   5.0   5.5   +1.2   10.2   in 1981   1.0   in 1989  
Direction   WNW   NNE   NNE       S         SW        
High Wind Gust   18   17   20   -2   47   in 1932   11   in 2009  
Direction   NW   NNE   NNE       N         WNW        
High Heat Index   76   69   75   +1   93   in 2015            
Wind Chill                                      
Maximum Water Temp   69.6   73.6   70.1   -0.5   74.3   in 2015   66.2   in 2017  
Minimum Water Temp   68.3   71.2   67.8   +0.5   72.2   in 2012   64.3   in 2017  
Average Water Temp   69.0   72.4   69.0   -0.0   73.1   in 2012   65.3   in 2017  
Sunrise/ AM Twilight   6:19:20 AM   5:51:23 AM            
Sunset / PM Twilight   7:05:55 PM   7:33:53 PM            
Length Of Day   12:46:35                          
Special Conditions   None                                  
Comments      
    September 8, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   74.8   79.0   75.0   -0.3   85.0   in 1983   68.3   in 1994  
Avg Minimum Temperature   58.8   65.8   59.9   -1.1   69.3   in 1898   51.4   in 1893  
Average Temperature   66.8   72.4   67.4   -0.7   76.5   in 1898   61.1   in 1994  
Total Precipitation   .08   .11   1.04   -.96   4.18   in 1905   .00   in 2015  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   5   1   8   -3   33   in 1994   0   in 2016  
Total CDD   20   62   29   -9   94   in 1898   0   in 1893  
Avg Maximum Dew Point   64.4   60.4   63.0   +1.4   71.3   in 2014   52.9   in 1984  
Avg Minimum Dew Point   54.9   49.5   54.0   +0.9   64.3   in 1959   43.6   in 1984  
Average  Dew Point   59.6   55.3   58.5   +1.2   67.4   in 1959   48.3   in 1984  
    September 8, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   37.91   28.95   32.53   +5.38   46.33   in 1998   16.94   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)   8   1   17   -9   49   in 1994   0   in 2015  
Total CDD (since Jan 1)   678   710   527   +151   752   in 2010   276   in 1902  
                             
Hour-by-Hour Weather For September 8, 2019  
Climate Weather for September 8  
Weather History For September 8  
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