Portsmouth Rhode Island Weather Almanac  
Tuesday, July 6, 2021  
M Cloudy early/ P Cloudy Day/M Cloudy, Rain/Thunderstorm PM, Windy & Much Warmer & Muggy  
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    July 6, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   82   80   79   +3   98   in 2010   61   in 1956  
Minimum Temperature   68   65   64   +4   74   in 1999   50   in 1979  
Average Temperature   75   73   72   +3   85   in 2010   58   in 1956  
 Month Avg Max Temperature   72.8   80.2   78.8   -6.0   89.0   in 1955   68.8   in 1914  
Month Avg Min Temperature   60.8   63.7   63.5   -2.7   70.3   in 2013   53.7   in 1962  
Month Average Temperature   67.2   72.3   71.5   -4.3   77.8   in 1955   62.0   in 1914  
HDD   0   0   0   +0   7   in 1956   0   in    
Month HDD   9   0   3   +6   19   in 1914   0   in 2020  
Season HDD   9   0   3   +6   19   in 1914   0   in 2020  
CDD   10   8   7   +3   20   in 2010   0   in 2001  
Month CDD   22   44   39   -17   77   in 1955   1   in 1914  
Year CDD   184   177   132   +52   215   in 1957   31   in 1972  
Maximum Dew Point   74   69   68   +6   77   in 1994   45   in 1979  
Minimum Dew Point   65   61   59   +6   71   in 1999   38   in 1965  
Average  Dew Point   70   65   64   +6   73   in 1999   44   in 1979  
 Month Avg Max Dew Point   67.0   69.8   67.5   -0.5   74.7   in 2018   51.3   in 1982  
Month Avg Min Dew Point   58.8   61.2   58.8   +0.0   68.2   in 2013   43.7   in 1982  
Month Average Dew Point   62.9   65.5   63.2   -0.3   70.9   in 2013   47.5   in 1982  
Precipitation   .13   .00   .11   +.02   1.70   in 1955            
One Hour   .12   .00           .59   in 1955            
Hourly Rate   .37   .00           1.17   in 2018            
Month Precipitation   2.15   T   .66   +1.49   3.03   in 2014   .00   in 2019  
Year Precipitation   21.21   21.02   23.23   -2.02   40.73   in 1998   12.92   in 1957  
Snow   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 6, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   96%   99%   92%   +4%   100%   in 2004   60%   in 1977  
Minimum Humidity   76%   62%   56%   +20%   87%   in 1989   26%   in 1965  
Average Humidity   86%   81%   74%   +12%   94%   in 1989   46%   in 1977  
Maximum Barometer   30.04   30.16   30.02   +00.02   30.45   in 1906   29.75   in 1954  
Minimum Barometer   29.86   29.95   29.84   +00.02   30.11   in 1995   29.47   in 1951  
Average Barometer   29.95   30.06   29.93   +00.02   30.18   in 1995   29.64   in 1951  
Average Wind   9.4   4.8   5.4   +4.0   15.8   in 1984   1.3   in 1989  
Direction   SW   NNE   SSW       SSW         SW        
High Wind Gust   28   24   20   +8   39   in 1980   11   in 2006  
Direction   SSW   NNE   SSW       NNW         W        
High Heat Index   88   82   80   +8   111   in 2010            
Low Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   69.8   64.8   70.4   -0.6   76.3   in 2013   64.8   in 2020  
Minimum Water Temp   67.6   61.2   65.6   +2.0   70.8   in 2013   60.8   in 2005  
Average Water Temp   68.7   63.0   68.0   +0.7   73.6   in 2013   63.0   in 2020  
Sunrise/ AM Twilight   5:18:48 AM   4:45:23 AM            
Sunset / PM Twilight   8:21:38 PM   8:55:02 PM            
Length Of Day   15:02:50                          
Special Conditions   Fog, Haze, Thunderstorm                      
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