Portsmouth Rhode Island Weather Almanac
Wednesday, December 5, 2018
Clear early then Partly Cloudy, Dry and Very Cold
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2018  
    December 5, 2018     Record Record
Observed Daily Data   Observed   2017   Normal   Depart   Highest Lowest
Maximum Temperature   36   56   45   -9   67   in 2001   24   in 1901  
Minimum Temperature   23   36   32   -9   51   in 2001   6   in 1926  
Average Temperature   30   46   39   -9   59   in 2001   18   in 1926  
Precipitation   .00   .16   .15   -.15   2.81   in 1993            
One Hour   .00   .08           .71   in 1993            
Snow   0.0   0.0   0.2   -0.2   8.3   in 2002            
Snow Depth   0   0           4   in 1901            
HDD   35   19   26   +9   47   in 1926   6   in 2001  
CDD   0   0   0   +0   0   in              
Maximum Dew Point   19   55   37   -18   58   in 1994   3   in 1989  
Minimum Dew Point   14   33   23   -9   46   in 2001   -4   in 1989  
Average  Dew Point   17   44   30   -13   50   in 1951   -1   in 1989  
Maximum Humidity   72%   96%   86%   -14%   100%   in 2013   53%   in 1980  
Minimum Humidity   44%   75%   56%   -12%   96%   in 1972   23%   in 1989  
Average Humidity   58%   86%   71%   -13%   98%   in 1972   42%   in 1989  
Maximum Barometer   30.13   30.48   30.16   -00.03   30.77   in 1971   29.30   in 1968  
Minimum Barometer   30.01   29.84   29.83   +00.18   30.52   in 2015   29.01   in 1968  
Average Barometer   30.07   30.16   29.99   +00.08   30.58   in 2015   29.16   in 1968  
Average Wind   5.5   13.3   8.0   -2.5   18.5   in 1961   2.4   in 1963  
Direction   NNE   SSE   WNW       S         W        
High Wind Gust   22   43   27   -5   50   in 1957   12   in 1998  
Direction   NNE   SSE   WNW       NNW         N        
High Heat Index                                      
Wind Chill   15   33   22   -7             0   in 1989  
Maximum Water Temp   46.0   50.5   48.6   -2.6   52.0   in 2001   43.9   in 2007  
Minimum Water Temp   41.9   49.0   45.9   -4.0   50.9   in 2001   40.3   in 2007  
Average Water Temp   44.0   49.8   47.2   -3.3   51.5   in 2001   42.1   in 2007  
Sunrise/ AM Twilight   6:56:54 AM   6:25:58 AM            
Sunset / PM Twilight   4:15:31 PM   4:46:28 PM            
Length Of Day   9:18:37                          
Special Conditions   None                                  
Comments      
    December 5, 2018     Record Record
Month-to-Date Summary   Observed   2017   Normal Depart Highest Lowest
 Avg Maximum Temperature   47.6   49.0   46.2   +1.4   58.6   in 2001   32.2   in 1896  
Avg Minimum Temperature   33.2   35.0   32.6   +0.6   43.8   in 2001   13.6   in 1989  
Average Temperature   40.4   42.0   39.4   +1.0   51.2   in 2001   23.7   in 1976  
Total Precipitation   1.15   .20   .75   +.40   3.48   in 1893   .00   in 2011  
Total Snow   0.0   0.0   0.9   -0.9   9.6   in 2002   0.0   in    
Total HDD   121   114   127   -6   206   in 1976   67   in 2001  
Total CDD   0   0   0   +0   807   in 2016   290   in 1902  
Avg Maximum Dew Point   40.0   42.2   38.2   +1.8   51.4   in 1982   14.0   in 1976  
Avg Minimum Dew Point   25.2   30.0   20.4   +4.8   39.0   in 1982   -3.8   in 1989  
Average  Dew Point   32.6   36.1   28.0   +4.6   45.2   in 1982   6.6   in 1989  
    December 5, 2018     Record Record
Year-to-Date Summary   Observed   2017   Normal Depart Highest Lowest
Total Precipitation   50.38   39.31   44.60   +5.78   61.39   in 1983   24.18   in 1957  
Total Snow (since Jul 1 18)   4.2   0.0   2.0   +2.2   19.5   in 1898   0.0   in    
Total HDD (since Jul 1 18)   1181   911   1159   +22   1498   in 1904   878   in 2011  
Total CDD (since Jan 1)   775   580   563   +212   807   in 2016   290   in 1902  
                             
Hour-by-Hour Weather For December 5, 2018  
Climate Weather for December 5  
Weather History For December 5  
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