Portsmouth Rhode Island Weather Almanac
Monday, September 9, 2019
Partly Cloudy, Light Winds and Seasonal Temperatures
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    September 9, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   77   66   74   +3   91   in 2016   62   in 1919  
Minimum Temperature   57   56   59   -2   71   in 2015   45   in 1952  
Average Temperature   67   61   66   +1   81   in 2016   56   in 1938  
Precipitation   .00   .00   .13   -.13   2.59   in 1969            
One Hour   .00   .00           .47   in 1969            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   0   4   1   -1   9   in 1938   0   in 2019  
CDD   2   0   3   -1   16   in 2016   0   in 2018  
Maximum Dew Point   64   56   62   +2   75   in 2016   46   in 1956  
Minimum Dew Point   52   48   53   -1   70   in 1999   36   in 1980  
Average  Dew Point   58   52   57   +1   72   in 2016   44   in 1956  
Maximum Humidity   94%   84%   92%   +2%   100%   in 2005   69%   in 1980  
Minimum Humidity   51%   67%   58%   -7%   90%   in 1999   29%   in 1957  
Average Humidity   73%   76%   75%   -3%   95%   in 1999   52%   in 1980  
Maximum Barometer   30.31   30.32   30.12   +00.19   30.44   in 1986   29.72   in 2010  
Minimum Barometer   30.16   30.19   29.93   +00.23   30.22   in 1952   29.41   in 1987  
Average Barometer   30.24   30.26   30.02   +00.21   30.32   in 1952   29.62   in 1969  
Average Wind   4.3   7.8   5.6   -1.3   10.8   in 1969   2.3   in 1961  
Direction   N   NE   SSW       NNE         SSW        
High Wind Gust   17   23   20   -3   45   in 1949   12   in 2002  
Direction   S   ENE   SSW       NW         SSW        
High Heat Index   77   65   75   +2   100   in 2016            
Wind Chill                                      
Maximum Water Temp   69.4   72.9   69.9   -0.5   74.5   in 2015   65.7   in 1997  
Minimum Water Temp   68.2   70.1   67.4   +0.8   72.0   in 2015   63.9   in 2004  
Average Water Temp   68.8   71.5   68.7   +0.1   73.3   in 2015   65.0   in 2017  
Sunrise/ AM Twilight   6:20:21 AM   5:52:26 AM            
Sunset / PM Twilight   7:04:13 PM   7:32:08 PM            
Length Of Day   12:43:52                          
Special Conditions   None                                  
Comments      
    September 9, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   75.0   77.6   74.9   +0.1   84.7   in 1983   69.0   in 1994  
Avg Minimum Temperature   58.6   64.7   59.8   -1.2   68.0   in 1898   51.4   in 1893  
Average Temperature   66.8   71.1   67.3   -0.6   75.5   in 1959   61.8   in 1994  
Total Precipitation   .08   .11   1.17   -1.09   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   5   9   -4   33   in 1994   0   in 2016  
Total CDD   22   62   32   -10   96   in 1959   0   in 1893  
Avg Maximum Dew Point   64.3   60.4   62.8   +1.5   70.7   in 1959   52.9   in 1984  
Avg Minimum Dew Point   54.6   49.2   53.8   +0.7   64.0   in 1959   43.6   in 1984  
Average  Dew Point   59.4   55.1   58.3   +1.1   67.3   in 1959   48.2   in 1984  
    September 9, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   37.91   28.95   32.66   +5.25   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   5   18   -10   54   in 1914   0   in 2015  
Total CDD (since Jan 1)   680   710   530   +150   752   in 2010   279   in 1902  
                             
Hour-by-Hour Weather For September 9, 2019  
Climate Weather for September 9  
Weather History For September 9  
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