Portsmouth Rhode Island Weather Almanac
Thursday, July 4, 2019
Clear early, then Partly Cloudy, Light Winds, Hot and Muggy
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    July 4, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   89   89   78   +11   95   in 1949   64   in 1978  
Minimum Temperature   66   72   62   +4   72   in 2018   52   in 1914  
Average Temperature   78   81   70   +8   83   in 1919   60   in 1978  
Precipitation   .00   .00   .11   -.11   3.01   in 2014            
One Hour   .00   .00           .58   in 2014            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0               in            
HDD   0   0   0   +0   5   in 1978   0   in 2019  
CDD   13   16   6   +7   18   in 1919            
Maximum Dew Point   73   76   67   +6   76   in 2018   52   in 1963  
Minimum Dew Point   62   69   58   +4   70   in 2002   40   in 1982  
Average  Dew Point   68   73   62   +6   73   in 2018   47   in 1982  
Maximum Humidity   91%   96%   92%   -1%   100%   in 2003   56%   in 1953  
Minimum Humidity   53%   64%   56%   -3%   88%   in 1973   30%   in 1956  
Average Humidity   72%   80%   74%   -2%   94%   in 1973   45%   in 1953  
Maximum Barometer   30.16   30.31   30.01   +00.15   30.34   in 1988   29.63   in 1996  
Minimum Barometer   29.97   30.22   29.81   +00.16   30.22   in 2018   29.47   in 1990  
Average Barometer   30.07   30.27   29.91   +00.15   30.27   in 2018   29.56   in 1996  
Average Wind   3.7   4.0   5.7   -2.0   13.1   in 1978   1.8   in 1995  
Direction   S   SW   SW       NE         SSW        
High Wind Gust   16   12   20   -4   36   in 2014   11   in 2015  
Direction   S   SSW   SW       N         ESE        
High Heat Index   97   98   80   +17   100   in 2002            
Wind Chill                                      
Maximum Water Temp   70.3   71.6   69.8   +0.5   76.6   in 2002   66.4   in 1996  
Minimum Water Temp   66.3   66.2   65.1   +1.2   70.2   in 1998   60.3   in 2003  
Average Water Temp   68.3   68.9   67.4   +0.9   71.8   in 2002   64.1   in 2003  
Sunrise/ AM Twilight   5:17:21 AM   4:43:48 AM            
Sunset / PM Twilight   8:22:18 PM   8:55:51 PM            
Length Of Day   15:04:57                          
Special Conditions   Light Fog                              
Comments      
    July 4, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   84.5   87.0   78.0   +6.5   88.5   in 1955   68.3   in 1914  
Avg Minimum Temperature   64.3   69.0   62.0   +2.3   70.8   in 1901   53.0   in 1962  
Average Temperature   74.4   78.0   70.0   +4.4   78.9   in 2002   61.0   in 1914  
Total Precipitation   .00   .00   .44   -.44   3.01   in 2014   .00   in 2019  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   0   3   -3   15   in 1914   0   in 2019  
Total CDD   39   53   22   +17   56   in 2002   0   in 1914  
Avg Maximum Dew Point   68.3   74.8   66.6   +1.7   74.8   in 2018   50.3   in 1982  
Avg Minimum Dew Point   60.3   66.3   57.5   +2.8   68.5   in 2013   42.3   in 1982  
Average  Dew Point   64.3   70.5   62.0   +2.2   70.6   in 2013   46.3   in 1982  
    July 4, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   29.06   24.39   24.74   +4.32   40.39   in 1998   12.92   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   15   in 1914   0   in 2019  
Total CDD (since Jan 1)   134   130   111   +23   196   in 1957   31   in 1972  
                             
Hour-by-Hour Weather For July 4, 2019  
Climate Weather for July 4  
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