Portsmouth Rhode Island Weather Almanac  
Friday, November 12, 2021  
Cloudy, Moderate Rain & Fog mid day, Partly Cloudy PM, Very Windy and Much Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2021
    November 12, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   63   65   53   +10   71   in 1909   36   in 1894  
Minimum Temperature   49   47   39   +10   56   in 1935   24   in 1926  
Average Temperature   56   56   46   +10   61   in 1909   31   in 1894  
 Month Avg Max Temperature   57.3   62.8   54.5   +2.8   64.8   in 1975   46.3   in 1894  
Month Avg Min Temperature   39.2   46.1   40.8   -1.7   47.9   in 2015   32.3   in 1980  
Month Average Temperature   48.4   54.8   47.8   +0.7   55.7   in 1938   40.4   in 1894  
High Heat Index                                      
Low Wind Chill   47   42   33   +14             10   in 2019  
HDD   9   9   19   -10   34   in 1894   4   in 1909  
Month HDD   199   123   207   -8   295   in 1894   112   in 1938  
Season HDD   389   451   603   -214   844   in 1992   389   in 2021  
CDD   0   0   0   +0       in         in    
Month CDD   0   0   0   +0   0   in         in    
Year CDD   795   871   609   +186   871   in 2020   290   in 1902  
Maximum Dew Point   62   64   44   +18   64   in 2020   19   in 1976  
Minimum Dew Point   44   43   31   +13   52   in 2006   9   in 2019  
Average  Dew Point   53   54   38   +15   57   in 2006   18   in 1976  
 Month Avg Max Dew Point   44.3   53.1   45.8   -1.5   54.0   in 2015   33.3   in 1973  
Month Avg Min Dew Point   32.0   39.7   32.8   -0.8   43.9   in 2015   20.8   in 1980  
Month Average Dew Point   38.4   46.6   39.4   -1.0   49.3   in 2015   27.8   in 1973  
Precipitation   .73   .45   .13   +.60   3.18   in 1947            
One Hour   .24   .19           .53   in 2006            
Hourly Rate   1.86   1.04           3.35   in 2006            
Month Precipitation   .74   1.51   1.56   -.82   6.64   in 1969   .00   in 1917  
Year Precipitation   44.74   32.79   38.92   +5.82   52.79   in 1998   21.93   in 1957  
Snow   0.0   0.0   0.0   +0.0   8.1   in 1987       in    
Snow Depth   0   0           T   in 1987       in    
Month Snow   0.0   0.0   0.0   +0.0   8.3   in 1987       in    
Season Snow   0.0   0.6   0.0   +0.0   8.3   in 1987       in    
    November 12, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   99%   98%   87%   +12%   100%   in 2014   58%   in 2016  
Minimum Humidity   75%   72%   57%   +18%   98%   in 1985   30%   in 2005  
Average Humidity   87%   85%   72%   +15%   99%   in 1985   46%   in 1989  
Maximum Barometer   30.33   30.08   30.18   +00.15   30.69   in 1985   29.59   in 1983  
Minimum Barometer   29.85   29.87   29.89   -00.04   30.41   in 2017   29.07   in 1983  
Average Barometer   30.09   29.98   30.03   +00.06   30.47   in 2017   29.33   in 1983  
Average Wind   14.2   8.1   7.7   +6.5   16.8   in 1982   2.8   in 2005  
Direction   ESE   NNE   NW       S         NW        
High Wind Gust   46   31   24   +22   61   in 1947   10   in 2017  
Direction   SSE   SSW   NW       NW         ENE        
Maximum Water Temp   58.8   59.0   54.2   +4.6   59.0   in 2020   48.8   in 2010  
Minimum Water Temp   57.2   57.4   51.9   +5.3   57.4   in 2020   46.9   in 2010  
Average Water Temp   58.0   58.2   53.1   +4.9   58.2   in 2020   47.9   in 2010  
Sunrise/ AM Twilight   6:29:19 AM   6:01:20 AM            
Sunset / PM Twilight   4:29:34 PM   4:57:33 PM            
Length Of Day   10:00:15                          
Special Conditions   Fog                                  
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