Portsmouth Rhode Island Weather Almanac
Thursday, July 18, 2019
Mostly Cloudy early then Cloudy, Steady PM Rain and Fog, Much Cooler
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    July 18, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   76   84   80   -4   92   in 2012   68   in 1913  
Minimum Temperature   65   64   64   +1   74   in 2013   53   in 1956  
Average Temperature   71   74   72   -1   83   in 2013   64   in 1962  
Precipitation   .66   .00   .11   +.55   .98   in 2007            
One Hour   .26   .00           .71   in 2006            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   0   0   0   +0   1   in 1962   0   in 2019  
CDD   6   9   7   -1   18   in 2013            
Maximum Dew Point   73   69   68   +5   77   in 2013   53   in 1976  
Minimum Dew Point   63   55   59   +4   72   in 2013   45   in 1993  
Average  Dew Point   68   62   63   +5   75   in 2013   51   in 1956  
Maximum Humidity   95%   98%   92%   +3%   100%   in 2017   77%   in 1969  
Minimum Humidity   84%   39%   58%   +26%   92%   in 2005   27%   in 1957  
Average Humidity   90%   69%   75%   +14%   96%   in 2005   54%   in 1993  
Maximum Barometer   29.97   29.95   30.03   -00.06   30.38   in 1935   29.74   in 1997  
Minimum Barometer   29.87   29.75   29.84   +00.03   30.10   in 1967   29.56   in 1984  
Average Barometer   29.92   29.85   29.93   -00.01   30.15   in 1967   29.70   in 1997  
Average Wind   6.3   5.6   5.2   +1.1   10.7   in 1974   1.3   in 1994  
Direction   NNE   NNE   SSW       SW         N        
High Wind Gust   19   21   20   -1   42   in 2012   10   in 1994  
Direction   NNE   NNE   SSW       NNW         N        
High Heat Index   80   83   85   -5   106   in 2012            
Wind Chill                                      
Maximum Water Temp   72.7   69.3   71.6   +1.1   77.8   in 2013   68.3   in 2004  
Minimum Water Temp   69.4   65.8   67.4   +2.0   72.1   in 2013   63.1   in 2001  
Average Water Temp   71.1   67.6   69.5   +1.5   74.9   in 2013   65.8   in 2004  
Sunrise/ AM Twilight   5:27:48 AM   4:55:21 AM            
Sunset / PM Twilight   8:15:20 PM   8:47:47 PM            
Length Of Day   14:47:32                          
Special Conditions   Fog                                  
Comments      
    July 18, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   83.8   81.3   78.8   +5.1   85.0   in 1955   74.4   in 1906  
Avg Minimum Temperature   65.4   64.1   62.9   +2.5   70.9   in 2013   57.5   in 1962  
Average Temperature   74.6   72.7   70.8   +3.9   76.9   in 2013   67.2   in 2009  
Total Precipitation   3.13   .25   1.98   +1.15   5.31   in 2009   T   in 1982  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   0   3   -3   23   in 1914   0   in 2019  
Total CDD   180   143   113   +67   218   in 2013   52   in 1895  
Avg Maximum Dew Point   69.8   69.2   67.1   +2.8   74.1   in 2013   60.1   in 1978  
Avg Minimum Dew Point   61.4   59.3   58.2   +3.2   68.4   in 2013   50.5   in 1962  
Average  Dew Point   65.6   64.3   62.6   +3.0   71.3   in 2013   55.6   in 1962  
    July 18, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   32.19   24.64   26.28   +5.91   40.76   in 1998   13.52   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)   0   0   3   -3   23   in 1914   0   in 2019  
Total CDD (since Jan 1)   275   220   202   +73   339   in 2010   86   in 1918  
                             
Hour-by-Hour Weather For July 18, 2019  
Climate Weather for July 18  
Weather History For July 18  
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