Portsmouth Rhode Island Weather Almanac  
Sunday, July 25, 2021  
Partly Cloudy early, Cloudy, Light Rain Day to Mostly Cloudy PM, Breezy and Continued Cool  
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    July 25, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   73   88   80   -7   90   in 1972   65   in 2017  
Minimum Temperature   67   67   66   +1   73   in 2010   53   in 1953  
Average Temperature   70   78   73   -3   81   in 2010   61   in 2017  
 Month Avg Max Temperature   78.7   82.1   79.7   -1.0   84.8   in 1955   74.0   in 1902  
Month Avg Min Temperature   65.0   66.2   64.6   +0.4   70.6   in 2013   58.9   in 1962  
Month Average Temperature   72.2   74.5   72.5   -0.3   76.9   in 2013   67.6   in 1909  
HDD   0   0   0   +0   4   in 2017   0   in    
Month HDD   9   0   3   +6   23   in 1914   0   in 2020  
Season HDD   9   0   3   +6   23   in 1914   0   in 2020  
CDD   5   13   8   -3   16   in 2010   0   in 2017  
Month CDD   188   237   187   +1   298   in 2013   74   in 1909  
Year CDD   350   370   280   +70   422   in 2010   103   in 1902  
Maximum Dew Point   69   74   69   +0   77   in 1995   53   in 1984  
Minimum Dew Point   63   65   61   +2   71   in 1961   43   in 1976  
Average  Dew Point   66   70   65   +1   73   in 1995   49   in 1976  
 Month Avg Max Dew Point   70.6   71.3   68.5   +2.1   73.7   in 2013   62.1   in 1966  
Month Avg Min Dew Point   62.3   63.5   60.1   +2.2   67.8   in 2013   52.2   in 1957  
Month Average Dew Point   66.4   67.4   64.3   +2.2   70.8   in 2013   57.3   in 1962  
Precipitation   .01   .00   .10   -.09   1.33   in 1900            
One Hour   .01   .00           .46   in 1990            
Hourly Rate   .00   .00           1.32   in 2009            
Month Precipitation   3.62   1.30   2.48   +1.14   8.59   in 2009   .36   in 1952  
Year Precipitation   22.68   22.32   25.05   -2.37   41.06   in 1998   13.67   in 1957  
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0           0   in              
Month Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in    
Season Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in #N/A  
    July 25, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   98%   96%   92%   +6%   100%   in 2018   67%   in 1976  
Minimum Humidity   80%   53%   58%   +22%   88%   in 1990   32%   in 1980  
Average Humidity   89%   75%   75%   +14%   94%   in 1990   51%   in 1980  
Maximum Barometer   30.04   30.09   30.06   -00.02   30.36   in 1985   29.71   in 1965  
Minimum Barometer   29.86   30.00   29.87   -00.01   30.25   in 2004   29.57   in 1977  
Average Barometer   29.95   30.05   29.96   -00.01   30.29   in 2004   29.66   in 1965  
Average Wind   7.6   4.6   5.8   +1.8   11.8   in 1977   1.3   in 1991  
Direction   SW   NW   SSW       SSW         SW        
High Wind Gust   27   24   20   +7   39   in 1997   11   in 1958  
Direction   SSW   SW   SW       N         SE        
High Heat Index   75   95   80   -5   98   in 1972            
Low Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   73.6   68.5   71.0   +2.6   74.8   in 2010   64.9   in 1997  
Minimum Water Temp   72.5   64.0   67.8   +4.7   72.5   in 2021   63.5   in 2000  
Average Water Temp   73.1   66.3   69.4   +3.6   73.2   in 2010   64.5   in 1997  
Sunrise/ AM Twilight   5:34:23 AM   5:02:40 AM            
Sunset / PM Twilight   8:09:13 PM   8:40:56 PM            
Length Of Day   14:34:50                          
Special Conditions   None                              
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Hour-by-Hour Weather For July 25, 2021            
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