Portsmouth Rhode Island Weather Almanac
Thursday, December 6, 2018
Clear early, Partly Cloudy Day to Mostly Cloudy PM, Continued Dry and Cold
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2018  
    December 6, 2018     Record Record
Observed Daily Data   Observed   2017   Normal   Depart   Highest Lowest
Maximum Temperature   41   58   45   -4   62   in 2001   24   in 1902  
Minimum Temperature   27   38   31   -4   54   in 1999   11   in 1901  
Average Temperature   34   48   38   -4   58   in 2001   19   in 1902  
Precipitation   .00   .35   .15   -.15   2.06   in 1945            
One Hour   .00   .21           .50   in 1953            
Snow   0.0   0.0   0.2   -0.2   13.9   in 1981            
Snow Depth   0   0           8   in 2002            
HDD   31   17   27   +4   46   in 1902   7   in 2001  
CDD   0   0   0   +0   0   in              
Maximum Dew Point   27   55   37   -10   59   in 1982   12   in 1969  
Minimum Dew Point   19   24   22   -3   52   in 2011   2   in 1992  
Average  Dew Point   23   40   29   -6   54   in 2011   10   in 1969  
Maximum Humidity   74%   97%   89%   -15%   100%   in 2013   56%   in 1992  
Minimum Humidity   42%   52%   60%   -18%   95%   in 2014   32%   in 1958  
Average Humidity   58%   75%   74%   -16%   98%   in 1972   47%   in 1992  
Maximum Barometer   30.15   29.97   30.10   +00.05   30.63   in 1976   29.52   in 1997  
Minimum Barometer   30.07   29.80   29.77   +00.30   30.28   in 2004   28.85   in 1977  
Average Barometer   30.11   29.89   29.93   +00.18   30.46   in 1976   29.19   in 1977  
Average Wind   6.3   8.8   8.4   -2.1   20.7   in 2003   2.0   in 1974  
Direction   W   W   W       NNE         SW        
High Wind Gust   21   37   27   -6   52   in 1953   9   in 1974  
Direction   W   SSE   W       SSW         S        
High Heat Index                                      
Wind Chill   22   33   22   +0             0   in 1954  
Maximum Water Temp   45.5   50.9   48.2   -2.7   53.0   in 2011   42.6   in 2007  
Minimum Water Temp   41.9   49.4   45.9   -4.0   51.8   in 2011   40.8   in 2007  
Average Water Temp   43.7   50.2   47.1   -3.4   52.4   in 2011   41.7   in 2007  
Sunrise/ AM Twilight   6:57:50 AM   6:26:51 AM            
Sunset / PM Twilight   4:15:26 PM   4:46:26 PM            
Length Of Day   9:17:36                          
Special Conditions   None                                  
Comments      
    December 6, 2018     Record Record
Month-to-Date Summary   Observed   2017   Normal Depart Highest Lowest
 Avg Maximum Temperature   46.5   50.5   46.0   +0.5   59.2   in 2001   33.0   in 1904  
Avg Minimum Temperature   32.2   35.5   32.3   -0.2   45.3   in 2001   14.5   in 1989  
Average Temperature   39.3   43.0   39.2   +0.2   52.3   in 2001   24.8   in 1976  
Total Precipitation   1.15   .55   .90   +.25   4.15   in 1981   .00   in 2000  
Total Snow   0.0   0.0   1.1   -1.1   17.0   in 1981   0.0   in    
Total HDD   152   131   154   -2   241   in 1976   74   in 2001  
Total CDD   0   0   0   +0   807   in 2016   290   in 1902  
Avg Maximum Dew Point   37.8   44.3   38.0   -0.2   52.7   in 1982   16.0   in 1976  
Avg Minimum Dew Point   24.2   29.0   20.7   +3.5   39.8   in 1982   -2.7   in 1989  
Average  Dew Point   31.0   36.7   28.3   +2.7   46.3   in 1982   9.3   in 1989  
    December 6, 2018     Record Record
Year-to-Date Summary   Observed   2017   Normal Depart Highest Lowest
Total Precipitation   50.38   39.66   44.75   +5.63   61.67   in 1983   24.19   in 1957  
Total Snow (since Jul 1 18)   4.2   0.0   2.2   +2.0   19.5   in 1898   0.0   in    
Total HDD (since Jul 1 18)   1212   928   1186   +26   1534   in 1904   888   in 2011  
Total CDD (since Jan 1)   775   580   563   +212   807   in 2016   290   in 1902  
                             
Hour-by-Hour Weather For December 6, 2018  
Climate Weather for December 6  
Weather History For December 6  
Weather Calendar  
Back To Weather Stat Page  
Home