Portsmouth Rhode Island Weather Almanac
Tuesday, July 28, 2020
Clear to Partly Cloudy PM, Very Hot, Record Breaking Heat
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    July 28, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   93   86   80   +13   93   in 2020   66   in 1911  
Minimum Temperature   75   64   65   +10   75   in 2020   54   in 2001  
Average Temperature   84   75   73   +11   84   in 2020   63   in 1914  
Precipitation   .00   .00   .10   -.10   3.17   in 2012            
One Hour   .00   .00           2.51   in 2012            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0           0   in            
Heating Degree Days   0   0   0   +0   2   in 1914   0   in 2020  
Cooling Degree Days   19   10   8   +11   19   in 2020   0   in 2001  
Maximum Dew Point   76   73   68   +8   76   in 2020   56   in 1962  
Minimum Dew Point   66   60   60   +6   70   in 2007   47   in 2001  
Average  Dew Point   71   67   64   +7   73   in 2006   52   in 2001  
Maximum Humidity   88%   92%   93%   -5%   100%   in 2017   75%   in 1968  
Minimum Humidity   51%   58%   62%   -11%   94%   in 2004   26%   in 1999  
Average Humidity   70%   75%   78%   -8%   97%   in 2004   56%   in 1999  
Maximum Barometer   29.86   30.20   30.01   -00.15   30.32   in 2001   29.67   in 2014  
Minimum Barometer   29.70   30.01   29.83   -00.13   30.21   in 1996   29.44   in 1989  
Average Barometer   29.78   30.11   29.92   -00.14   30.26   in 1996   29.57   in 2014  
Average Wind   6.0   7.2   5.4   +0.6   10.3   in 1969   2.1   in 2004  
Direction   SW   S   S       S         N        
High Wind Gust   28   23   20   +8   42   in 1989   12   in 2011  
Direction   SW   SSW   S       NNW         S        
High Heat Index   104   93   82   +22   104   in 2020            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   71.1   73.2   71.6   -0.5   74.5   in 2007   68.2   in 2004  
Minimum Water Temp   66.2   69.9   68.2   -2.0   71.1   in 2007   61.3   in 2003  
Average Water Temp   68.7   71.6   69.9   -1.3   72.8   in 2007   66.7   in 2004  
Sunrise/ AM Twilight   5:37:29 AM   5:06:05 AM            
Sunset / PM Twilight   8:05:59 PM   8:37:22 PM            
Length Of Day   14:28:30                          
Special Conditions   None                                  
Comments   Record Breaking Heat  
    July 28, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   83.2   83.8   79.2   +4.0   84.6   in 1952   73.8   in 1902  
Avg Minimum Temperature   66.9   65.7   63.6   +3.3   70.1   in 2013   59.2   in 1962  
Average Temperature   75.4   74.7   71.4   +3.9   76.3   in 2013   67.6   in 1902  
Total Precipitation   1.30   6.17   3.05   -1.75   8.73   in 2009   .36   in 1952  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total Heating Deg Days   0   0   3   -3   25   in 1914   0   in 2020  
Total Cooling Deg Days   290   280   191   +99   316   in 2013   87   in 1902  
Avg Maximum Dew Point   71.6   70.2   67.4   +4.2   73.4   in 2013   61.8   in 1962  
Avg Minimum Dew Point   63.7   61.6   58.7   +5.0   67.4   in 2013   52.1   in 1965  
Average  Dew Point   67.7   65.9   63.1   +4.6   70.4   in 2013   56.9   in 1962  
    July 28, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   22.32   35.23   27.48   -5.16   41.06   in 1998   13.93   in 1957  
Total Snow (since Jul 1 20)   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD (since Jul 1 20)   0   0   3   -3   25   in 1914   0   in 2020  
Total CDD (since Jan 1)   423   375   280   +143   450   in 2010   112   in 1902  
                             
Hour-by-Hour Weather For July 28, 2020  
Climate Weather for July 28  
Weather History For July 28  
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