Portsmouth Rhode Island Weather Almanac
Tuesday, October 20, 2020
Mostly Cloudy early then Cloudy Heavy Rain and Drizzle, Foggy, Light Winds and Warmer
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    October 20, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   64   63   60   +4   77   in 1947   43   in 1974  
Minimum Temperature   50   40   44   +6   62   in 1916   29   in 1974  
Average Temperature   57   52   52   +5   69   in 1947   36   in 1974  
Precipitation   .38   .02   .13   +.25   3.31   in 1996            
One Hour   .17   .01           .82   in 2012            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0           T   in 1972            
HDD   8   13   13   -5   29   in 1974   0   in 1984  
CDD   0   0   0   +0   4   in 1947   0   in    
Maximum Dew Point   62   52   50   +12   67   in 2011   21   in 1974  
Minimum Dew Point   48   39   38   +11   54   in 1994   13   in 1952  
Average  Dew Point   55   46   44   +11   59   in 2007   19   in 1974  
Maximum Humidity   98%   96%   90%   +8%   100%   in 2012   61%   in 1974  
Minimum Humidity   93%   59%   54%   +39%   94%   in 1996   21%   in 1990  
Average Humidity   96%   78%   72%   +23%   97%   in 1996   50%   in 1991  
Maximum Barometer   30.31   30.11   30.13   +00.18   30.64   in 1971   29.70   in 1966  
Minimum Barometer   30.22   30.03   29.86   +00.36   30.47   in 1970   29.05   in 1927  
Average Barometer   30.27   30.07   29.99   +00.27   30.55   in 1970   29.49   in 2006  
Average Wind   2.8   3.2   6.9   -4.1   16.2   in 1961   2.6   in 1962  
Direction   S   S   SW       N         S        
High Wind Gust   16   15   25   -9   46   in 1960   12   in 1953  
Direction   S   S   SSW       SSW         SW        
High Heat Index                   78   in 1947            
Wind Chill       39                     25   in 1974  
Maximum Water Temp   62.6   59.1   60.4   +2.2   63.5   in 2007   56.7   in 2010  
Minimum Water Temp   62.1   58.0   58.8   +3.3   62.5   in 2016   55.0   in 2009  
Average Water Temp   62.4   58.6   59.7   +2.7   63.0   in 2007   55.9   in 2009  
Sunrise/ AM Twilight   7:04:24 AM   6:36:20 AM            
Sunset / PM Twilight   5:55:14 PM   6:23:18 PM            
Length Of Day   10:50:50                          
Special Conditions   Dense Fog                              
Comments      
    October 20, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   65.9   63.2   63.5   +2.3   70.8   in 1990   55.3   in 1896  
Avg Minimum Temperature   50.0   49.3   48.0   +2.0   54.8   in 2011   39.5   in 1981  
Average Temperature   58.2   56.5   55.7   +2.5   62.3   in 1990   49.6   in 1981  
Total Precipitation   3.63   3.38   2.49   +1.14   8.13   in 2005   .01   in 1963  
Total Snow   0.0   0.0   0.0   +0.0   0.7   in 1979   0.0   in    
Total HDD   137   178   187   -50   308   in 1981   76   in 2011  
Total CDD   1   8   5   -4   48   in 1954   0   in 2015  
Avg Maximum Dew Point   57.1   55.7   53.3   +3.8   60.5   in 2007   44.2   in 1981  
Avg Minimum Dew Point   44.9   44.3   41.8   +3.1   50.7   in 2005   31.5   in 1981  
Average  Dew Point   51.2   50.4   47.5   +3.7   55.4   in 2005   37.8   in 1981  
    October 20, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   28.89   42.78   38.00   -9.11   51.27   in 1998   19.78   in 1957  
Total Snow (since Jul 1 20)   0.0   0.0   0.0   +0.0   0.7   in 1979   0.0   in    
Total HDD (since Jul 1 20)   193   221   276   -83   456   in 1956   118   in 2011  
Total CDD (since Jan 1)   868   731   563   +305   868   in 2020   290   in 1902  
                             
Hour-by-Hour Weather For October 20, 2020  
Climate Weather for October 20  
Weather History For October 20  
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