Portsmouth Rhode Island Weather Almanac  
Friday, October 15, 2021  
Partly Cloudy to Mostly Cloudy PM, Light Winds, Continued Very Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2021
    October 15, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   71   70   62   +9   78   in 1956   44   in 2009  
Minimum Temperature   58   53   48   +10   64   in 2014   32   in 1979  
Average Temperature   65   62   55   +10   69   in 2014   41   in 2009  
 Month Avg Max Temperature   69.6   66.7   64.7   +4.9   72.5   in 1990   55.4   in 1896  
Month Avg Min Temperature   55.1   51.3   50.1   +5.1   56.1   in 2017   39.7   in 1981  
Month Average Temperature   62.7   59.3   57.6   +5.1   64.3   in 1990   49.6   in 1981  
High Heat Index                   78   in 1956            
Low Wind Chill                             31   in 1979  
HDD   0   3   10   -10   24   in 2009   0   in 2021  
Month HDD   40   86   111   -71   231   in 1981   35   in 1990  
Season HDD   65   142   191   -126   402   in 1956   65   in 2021  
CDD   0   0   0   +0   4   in 2014   0   in    
Month CDD   5   1   6   -1   48   in 1954   0   in 2016  
Year CDD   791   868   609   +182   868   in 2020   290   in 1902  
Maximum Dew Point   64   61   53   +11   69   in 2014   37   in 1983  
Minimum Dew Point   55   51   41   +14   63   in 2014   23   in 1996  
Average  Dew Point   60   56   47   +13   66   in 2014   31   in 1996  
 Month Avg Max Dew Point   60.9   57.7   56.2   +4.7   62.9   in 2018   43.3   in 1981  
Month Avg Min Dew Point   53.3   45.5   44.3   +9.0   54.0   in 2005   32.3   in 1981  
Month Average Dew Point   57.3   51.9   50.2   +7.1   58.4   in 2005   37.8   in 1981  
Precipitation   .00   .00   .14   -.14   3.15   in 2005            
One Hour   .00   .00           .92   in 2005            
Hourly Rate   .00   .00           4.88   in 2004            
Month Precipitation   1.25   1.73   2.10   -.85   8.11   in 2005   .00   in 1914  
Year Precipitation   40.35   26.99   35.18   +5.17   51.27   in 1998   18.73   in 1957  
Snow   0.0   0.0   0.0   +0.0   0.0   in         in    
Snow Depth   0   0   0       0   in         in    
Month Snow   0.0   0.0   0.0   -0.0   0.7   in 1979       in    
Season Snow   0.0   0.0   0.0   -0.0   0.7   in 1979       in    
    October 15, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   96%   96%   91%   +5%   100%   in 2018   56%   in 1973  
Minimum Humidity   80%   63%   56%   +24%   92%   in 1955   27%   in 1996  
Average Humidity   88%   80%   73%   +15%   96%   in 2017   46%   in 1996  
Maximum Barometer   29.95   30.08   30.10   -00.15   30.46   in 2016   29.58   in 2010  
Minimum Barometer   29.91   30.02   29.86   +00.05   30.41   in 2016   29.09   in 2003  
Average Barometer   29.93   30.05   29.98   -00.05   30.44   in 2016   29.40   in 2003  
Average Wind   4.4   7.6   7.0   -2.6   20.5   in 1955   1.6   in 1959  
Direction   S   S   SW       ENE         N        
High Wind Gust   18   27   24   -6   55   in 1954   9   in 1997  
Direction   SSE   SSW   WSW       ESE         N        
Maximum Water Temp   64.0   67.5   62.3   +1.7   67.5   in 2021   58.7   in 2009  
Minimum Water Temp   62.6   66.4   60.7   +1.9   66.4   in 2021   54.9   in 2009  
Average Water Temp   63.3   67.0   61.5   +1.8   67.0   in 2021   56.8   in 2009  
Sunrise/ AM Twilight   6:56:19 AM   6:29:51 AM            
Sunset / PM Twilight   6:05:32 PM   6:32:00 PM            
Length Of Day   11:09:13                          
Special Conditions   None                              
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Hour-by-Hour Weather For October 15, 2021            
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