Portsmouth Rhode Island Weather Almanac
Sunday, December 27, 2020
Clear to Partly Cloudy PM, Light Winds, Seasonal Temperatures
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    December 27, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   39   50   39   +0   59   in 2015   12   in 1925  
Minimum Temperature   24   33   25   -1   45   in 2015   2   in 1914  
Average Temperature   32   42   32   +0   52   in 2015   9   in 1925  
Precipitation   .00   .00   .13   -.13   2.52   in 1905            
One Hour   .00   .00           .26   in 1973            
Snow   0.0   0.0   0.3   -0.3   5.7   in 1944            
Snow Depth   0   0           13   in 1947            
HDD   33   23   33   +0   56   in 1925   13   in 2015  
CDD   0   0   0   +0   0   in   0   in    
Maximum Dew Point   25   46   31   -6   57   in 2015   -8   in 1993  
Minimum Dew Point   18   29   15   +4   42   in 2015   -17   in 1968  
Average  Dew Point   22   38   23   -1   50   in 2015   -11   in 1993  
Maximum Humidity   81%   93%   82%   -1%   100%   in 2015   49%   in 1993  
Minimum Humidity   50%   80%   53%   -3%   93%   in 1973   20%   in 1960  
Average Humidity   66%   87%   68%   -2%   96%   in 1973   39%   in 1993  
Maximum Barometer   30.36   30.43   30.19   +00.17   30.92   in 1990   29.20   in 1969  
Minimum Barometer   29.98   30.05   29.83   +00.15   30.56   in 1990   28.71   in 2010  
Average Barometer   30.17   30.24   30.01   +00.16   30.74   in 1990   28.97   in 1969  
Average Wind   4.3   7.1   8.1   -3.8   23.4   in 2010   2.1   in 1961  
Direction   NW   SSW   NW       NNW         SSW        
High Wind Gust   17   23   26   -9   55   in 1934   10   in 1967  
Direction   W   SSW   WNW       NW         N        
High Heat Index                                      
Wind Chill   18   30   15   +3             -16   in 1989  
Maximum Water Temp   44.8   40.2   43.8   +1.0   50.5   in 2015   39.0   in 2000  
Minimum Water Temp   42.4   37.8   41.6   +0.8   49.7   in 2015   34.5   in 2000  
Average Water Temp   43.6   39.0   42.7   +0.9   50.1   in 2015   36.8   in 2000  
Sunrise/ AM Twilight   7:10:56 AM   6:39:41 AM            
Sunset / PM Twilight   4:23:00 PM   4:54:15 PM            
Length Of Day   9:12:04                          
Special Conditions   None                                  
Comments      
    December 27, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   43.0   42.3   42.6   +0.4   55.1   in 2015   30.5   in 1989  
Avg Minimum Temperature   31.2   28.6   28.7   +2.4   42.7   in 2015   14.0   in 1989  
Average Temperature   37.4   35.8   35.6   +1.8   49.3   in 2015   22.5   in 1989  
Total Precipitation   6.08   5.28   3.83   +2.25   9.28   in 1936   .56   in 1955  
Total Snow   7.4   8.4   6.4   +1.0   21.7   in 1981   0.0   in 2015  
Total HDD   746   788   787   -41   1148   in 1989   425   in 2015  
Total CDD   0   0   0   +0   0   in         in    
Avg Maximum Dew Point   36.6   35.6   34.5   +2.1   50.1   in 2015   15.1   in 1989  
Avg Minimum Dew Point   23.7   21.1   19.0   +4.6   37.6   in 2015   -1.6   in 1989  
Average  Dew Point   30.4   28.7   26.8   +3.6   44.1   in 2015   6.7   in 1989  
    December 27, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   42.96   54.78   47.81   -4.85   65.27   in 1983   27.66   in 1965  
Total Snow (since Jul 1 20)   8.0   8.4   7.5   +0.5   22.3   in 1904   0.0   in 2015  
Total HDD (since Jul 1 20)   1539   1778   1819   -280   2351   in 1904   1220   in 2015  
Total CDD (since Jan 1)   871   731   563   +308   871   in 2020   290   in 1902  
                                   
Hour-by-Hour Weather For December 27, 2020  
Climate Weather for December 27  
Weather History For December 27  
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