Portsmouth Rhode Island Weather Almanac  
Monday, August 16, 2021  
Partly Cloudy, Light Winds and Cooler  
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    August 16, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   80   70   79   +1   92   in 1938   59   in 1905  
Minimum Temperature   63   64   64   -1   73   in 2002   52   in 1972  
Average Temperature   72   67   71   +1   83   in 1938   58   in 1905  
 Month Avg Max Temperature   80.9   83.8   79.3   +1.6   85.2   in 1944   72.4   in 1964  
Month Avg Min Temperature   65.6   68.8   64.6   +1.1   72.1   in 1988   55.6   in 1964  
Month Average Temperature   73.6   76.5   71.9   +1.7   78.7   in 1988   64.3   in 1964  
HDD   0   0   0   +0   7   in 1905   0   in    
Month HDD   0   0   0   +0   22   in 1964   0   in 2021  
Season HDD   9   0   3   +6   34   in 1914   0   in 2020  
CDD   7   2   7   +0   18   in 1938   0   in 2004  
Month CDD   137   184   119   +18   219   in 1988   11   in 1964  
Year CDD   527   648   447   +80   648   in 2020   208   in 1902  
Maximum Dew Point   68   66   68   +0   78   in 1995   51   in 1972  
Minimum Dew Point   59   62   60   -1   70   in 2002   45   in 1968  
Average  Dew Point   64   64   64   +0   74   in 1995   49   in 1964  
 Month Avg Max Dew Point   70.9   72.5   68.8   +2.2   74.1   in 2018   57.1   in 1964  
Month Avg Min Dew Point   62.4   64.6   60.8   +1.6   68.3   in 2003   46.7   in 1964  
Month Average Dew Point   66.7   68.5   64.7   +2.0   71.0   in 2018   51.9   in 1964  
Precipitation   .00   .23   .12   -.12   1.32   in 1947            
One Hour   .00   .08           .42   in 1981            
Hourly Rate   .00   .10           .42   in 2010            
Month Precipitation   4.02   .78   1.91   +2.11   7.15   in 1946   .07   in 1940  
Year Precipitation   26.85   23.16   27.56   -.71   43.87   in 1983   15.70   in 1957  
Snow   0.0   0.0   #N/A   #N/A   #N/A   in #N/A            
Snow Depth   0   0           #N/A   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  
    August 16, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   93%   94%   92%   +1%   100%   in 2017   75%   in 1980  
Minimum Humidity   64%   84%   58%   +6%   90%   in 2004   37%   in 1979  
Average Humidity   79%   89%   75%   +3%   94%   in 2004   59%   in 1974  
Maximum Barometer   30.23   30.06   30.06   +00.17   30.33   in 1992   29.81   in 1981  
Minimum Barometer   30.18   29.86   29.87   +00.31   30.18   in 2021   29.38   in 1981  
Average Barometer   30.21   29.96   29.97   +00.24   30.21   in 2021   29.60   in 1981  
Average Wind   3.2   5.7   5.6   -2.4   12.1   in 1980   1.5   in 1975  
Direction   ENE   NE   SSW       NW         WSW        
High Wind Gust   17   22   20   -3   37   in 1951   9   in 1998  
Direction   SSE   ENE   SSW       SSE         SSE        
High Heat Index   82   71   81   +1   94   in 2018            
Low Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   74.5   66.2   71.8   +2.7   76.1   in 2003   66.2   in 2020  
Minimum Water Temp   71.8   65.3   68.9   +2.9   74.1   in 2018   64.8   in 2006  
Average Water Temp   73.2   65.8   70.4   +2.8   75.0   in 2018   65.8   in 2020  
Sunrise/ AM Twilight   5:56:18 AM   5:26:47 AM            
Sunset / PM Twilight   7:42:18 PM   8:11:49 PM            
Length Of Day   13:46:00                          
Special Conditions   None                              
Comments                                      
Hour-by-Hour Weather For August 16, 2021            
Climate Weather for August 16            
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