Portsmouth Rhode Island Weather Almanac
Wednesday, November 18, 2020
Partly Cloudy early then Clear, Windy and Very Cold
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    November 18, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   37   44   51   -14   69   in 1953   31   in 1924  
Minimum Temperature   25   37   37   -12   51   in 1958   18   in 1924  
Average Temperature   31   41   44   -13   57   in 2013   25   in 1924  
Precipitation   .00   .09   .16   -.16   1.76   in 1927            
One Hour   .00   .04           .84   in 1994            
Snow   0.0   0.0   0.0   +0.0   1.5   in 1980            
Snow Depth   0   0           3   in 1980            
HDD   34   24   20   +14   40   in 1924   8   in 2013  
CDD   0   0   0   +0   0   in   0   in    
Maximum Dew Point   29   38   42   -13   62   in 1978   20   in 1965  
Minimum Dew Point   13   35   28   -15   49   in 1958   3   in 1959  
Average  Dew Point   21   37   35   -14   52   in 1958   13   in 1959  
Maximum Humidity   72%   94%   85%   -13%   100%   in 2013   57%   in 1965  
Minimum Humidity   42%   75%   52%   -10%   90%   in 1968   17%   in 1991  
Average Humidity   57%   85%   68%   -11%   95%   in 1968   40%   in 1991  
Maximum Barometer   30.57   30.03   30.17   +00.40   30.68   in 2012   29.54   in 1981  
Minimum Barometer   30.05   29.64   29.87   +00.18   30.59   in 2012   29.07   in 1980  
Average Barometer   30.31   29.84   30.02   +00.29   30.64   in 2012   29.35   in 1981  
Average Wind   10.9   15.5   7.7   +3.2   16.1   in 1965   1.7   in 1971  
Direction   NNW   N   N       WNW         W        
High Wind Gust   29   34   25   +4   46   in 1987   9   in 1971  
Direction   NNW   N   N       SW         ESE        
High Heat Index                                      
Wind Chill   18   28   31   -13             12   in 1959  
Maximum Water Temp   53.2   48.4   52.0   +1.2   55.9   in 2006   48.0   in 2018  
Minimum Water Temp   50.4   45.2   49.8   +0.6   55.2   in 2006   44.6   in 2018  
Average Water Temp   51.8   46.8   50.9   +0.9   55.6   in 2006   46.3   in 2018  
Sunrise/ AM Twilight   6:39:05 AM   6:09:09 AM            
Sunset / PM Twilight   4:22:20 PM   4:52:17 PM            
Length Of Day   9:43:15                          
Special Conditions   None                                  
Comments      
    November 18, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   58.7   50.9   54.0   +4.7   61.6   in 1975   45.8   in 1904  
Avg Minimum Temperature   42.8   32.8   39.2   +3.6   45.5   in 2006   31.6   in 1933  
Average Temperature   50.9   42.0   46.7   +4.2   52.6   in 1975   39.1   in 1933  
Total Precipitation   2.08   1.27   2.70   -.62   7.28   in 1969   .00   in 1917  
Total Snow   0.0   T   0.0   +0.0   8.3   in 1987   0.0   in 2020  
Total HDD   253   414   327   -74   467   in 1933   224   in 1975  
Total CDD   0   0   0   +0   0   in         in    
Avg Maximum Dew Point   49.8   41.5   43.7   +6.1   51.6   in 2005   31.6   in 1976  
Avg Minimum Dew Point   35.7   21.9   30.1   +5.7   41.1   in 2006   19.6   in 1980  
Average  Dew Point   43.0   32.0   36.9   +6.1   46.2   in 2006   26.7   in 1976  
    November 18, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   33.36   47.64   42.14   -8.78   55.21   in 1983   22.69   in 1957  
Total Snow (since Jul 1 20)   0.6   T   T   +0.6   8.3   in 1987   0.0   in 2017  
Total HDD (since Jul 1 20)   581   726   762   -181   1001   in 1992   525   in 1961  
Total CDD (since Jan 1)   871   731   563   +308   871   in 2020   290   in 1902  
                                   
Hour-by-Hour Weather For November 18, 2020  
Climate Weather for November 18  
Weather History For November 18  
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