Portsmouth Rhode Island Weather Almanac
Monday, July 20, 2020
Cloudy, Light Rain & Dense Fog early then Partly Cloudy, Hazy, Hot and Very Humid
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    July 20, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   90   94   80   +10   94   in 2019   66   in 1902  
Minimum Temperature   71   74   65   +6   74   in 2019   55   in 2000  
Average Temperature   81   84   72   +9   84   in 2019   63   in 1903  
Precipitation   .03   .00   .11   -.08   1.57   in 1988            
One Hour   .03   .00           .33   in 1982            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0           0   in            
HDD   0   0   0   +0   2   in 1903   0   in 2020  
CDD   16   19   7   +9   19   in 2019   0   in 2012  
Maximum Dew Point   79   79   68   +11   79   in 2020   51   in 1965  
Minimum Dew Point   69   72   59   +10   72   in 2019   43   in 1965  
Average  Dew Point   74   76   64   +10   76   in 2019   47   in 1965  
Maximum Humidity   96%   96%   92%   +4%   100%   in 2004   64%   in 1957  
Minimum Humidity   63%   60%   59%   +4%   92%   in 1988   30%   in 1957  
Average Humidity   80%   78%   76%   +4%   96%   in 1988   47%   in 1957  
Maximum Barometer   29.89   29.84   30.01   -00.12   30.24   in 2006   29.66   in 1963  
Minimum Barometer   29.78   29.75   29.82   -00.04   30.15   in 1956   29.48   in 1963  
Average Barometer   29.84   29.80   29.92   -00.08   30.20   in 1956   29.57   in 1963  
Average Wind   7.3   4.7   5.8   +1.5   11.3   in 1974   2.1   in 2009  
Direction   SW   SSW   SW       N         SE        
High Wind Gust   24   17   20   +4   34   in 1996   10   in 1967  
Direction   WSW   SW   SW       WNW         N        
High Heat Index   103   113   82   +21   113   in 2019            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   69.1   73.4   71.1   -2.0   75.3   in 2013   67.5   in 2000  
Minimum Water Temp   66.0   70.3   67.3   -1.3   70.6   in 2010   64.2   in 2003  
Average Water Temp   67.6   71.9   69.2   -1.7   72.6   in 2013   66.5   in 2000  
Sunrise/ AM Twilight   5:29:07 AM   4:56:49 AM            
Sunset / PM Twilight   8:14:11 PM   8:46:29 PM            
Length Of Day   14:43:23                          
Special Conditions   Dense Fog, Haze                            
Comments      
    July 20, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   80.9   84.3   78.9   +2.0   84.6   in 1955   74.6   in 1902  
Avg Minimum Temperature   65.3   65.8   63.1   +2.2   71.3   in 2013   57.9   in 1962  
Average Temperature   73.1   75.1   70.9   +2.2   77.3   in 2013   67.5   in 2009  
Total Precipitation   1.09   3.13   2.20   -1.11   5.31   in 2009   .16   in 2002  
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 2020  
Total CDD   168   208   127   +41   250   in 2013   61   in 1895  
Avg Maximum Dew Point   70.8   70.5   67.1   +3.7   74.3   in 2013   60.8   in 1978  
Avg Minimum Dew Point   62.9   62.0   58.3   +4.6   68.9   in 2013   51.0   in 1962  
Average  Dew Point   66.9   63.7   62.7   +4.1   71.6   in 2013   55.9   in 1962  
    July 20, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Snow (since Jul 1 20)   22.11   32.19   26.63   -4.52   40.76   in 1998   13.52   in 1957  
Total HDD (since Jul 1 20)   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 2020  
Total CDD (since Jan 1)   301   284   216   +85   362   in 2010   93   in 1902  
                             
Hour-by-Hour Weather For July 20, 2019  
Climate Weather for July 20  
Weather History For July 20  
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