Portsmouth Rhode Island Weather Almanac
Thursday, September 5, 2019
Clear to Mostly Cloudy PM, Much Cooler
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    September 5, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   73   81   75   -2   91   in 1961   59   in 1994  
Minimum Temperature   57   69   60   -3   72   in 1953   47   in 1906  
Average Temperature   65   75   67   -2   80   in 1961   56   in 1994  
Precipitation   .00   .00   .13   -.13   2.84   in 1991            
One Hour   .00   .00           .67   in 1991            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   0   0   1   -1   9   in 1994   0   in 2019  
CDD   0   10   4   -4   15   in 1961   0   in 2019  
Maximum Dew Point   66   71   63   +3   74   in 2008   50   in 1965  
Minimum Dew Point   50   67   54   -4   69   in 1953   35   in 2000  
Average  Dew Point   58   69   58   -0   71   in 2008   43   in 2000  
Maximum Humidity   91%   97%   92%   -1%   100%   in 2003   78%   in 1998  
Minimum Humidity   57%   68%   57%   +0%   92%   in 1991   32%   in 2007  
Average Humidity   74%   83%   74%   -0%   96%   in 1991   58%   in 1964  
Maximum Barometer   30.09   30.28   30.11   -00.02   30.57   in 1989   29.66   in 1988  
Minimum Barometer   29.97   30.20   29.91   +00.06   30.28   in 2004   29.15   in 1988  
Average Barometer   30.03   30.24   30.01   +00.02   30.39   in 1989   29.41   in 1988  
Average Wind   6.8   5.0   5.8   +1.0   13.5   in 2016   1.6   in 2006  
Direction   NNE   SSE   SSW       NNE         SSW        
High Wind Gust   22   18   20   +2   41   in 2016   11   in 1952  
Direction   NNE   SSE   SSW       NNE         SW        
High Heat Index   73   84   77   -4   102   in 1961            
Wind Chill                                      
Maximum Water Temp   70.5   73.9   70.3   +0.2   73.8   in 2018   66.9   in 1997  
Minimum Water Temp   68.6   71.5   67.6   +1.0   71.5   in 2018   64.7   in 2017  
Average Water Temp   69.6   72.7   69.0   +0.6   72.7   in 2018   65.9   in 2017  
Sunrise/ AM Twilight   6:16:19 AM   5:48:12 AM            
Sunset / PM Twilight   7:11:01 PM   7:39:07 PM            
Length Of Day   12:54:42                          
Special Conditions   None                                  
Comments      
    September 5, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   76.8   81.2   75.4   +1.4   86.6   in 1898   66.6   in 1994  
Avg Minimum Temperature   59.8   66.0   60.4   -0.6   70.6   in 1959   51.4   in 1893  
Average Temperature   68.3   73.6   67.9   +0.4   78.5   in 1898   60.5   in 1994  
Total Precipitation   .00   .00   .65   -.65   4.15   in 1905   .00   in 2018  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   0   5   -5   25   in 1994   0   in 2019  
Total CDD   17   44   20   -3   69   in 1898   0   in 1986  
Avg Maximum Dew Point   67.2   61.0   63.4   +3.8   73.4   in 1973   54.4   in 1987  
Avg Minimum Dew Point   56.4   50.0   54.4   +2.0   67.6   in 1959   44.4   in 1967  
Average  Dew Point   61.8   55.8   58.9   +2.9   70.3   in 1973   49.6   in 1987  
    September 5, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   37.83   28.84   32.14   +5.69   45.30   in 1998   16.55   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   14   -11   42   in 1905   0   in 2018  
Total CDD (since Jan 1)   675   692   518   +157   739   in 2010   272   in 1902  
                             
Hour-by-Hour Weather For September 5, 2019  
Climate Weather for September 5  
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