Portsmouth Rhode Island Weather Almanac
Monday, December 3, 2018
Cloudy and Fog early then Partly Cloudy, Very Warm
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2018  
    December 3, 2018     Record Record
Observed Daily Data   Observed   2017   Normal   Depart   Highest Lowest
Maximum Temperature   57   44   46   +11   62   in 2009   22   in 1976  
Minimum Temperature   45   33   33   +12   50   in 2009   8   in 1976  
Average Temperature   51   39   39   +12   56   in 2009   15   in 1976  
Precipitation   .00   .00   .15   -.15   2.34   in 1986            
One Hour   .00   .00           .96   in 1986            
Snow   0.0   0.0   0.2   -0.2   2.7   in 1893            
Snow Depth   0   0           6   in 1898            
HDD   14   26   25   -11   50   in 1976   9   in 2009  
CDD   0   0   0   +0   0   in              
Maximum Dew Point   54   35   38   +16   61   in 2009   9   in 1976  
Minimum Dew Point   35   30   24   +12   41   in 2009   -15   in 1976  
Average  Dew Point   45   33   31   +14   51   in 2009   -3   in 1976  
Maximum Humidity   100%   88%   86%   +14%   100%   in 2018   52%   in 1976  
Minimum Humidity   53%   63%   53%   -0%   87%   in 1982   24%   in 1960  
Average Humidity   77%   76%   70%   +7%   93%   in 1963   40%   in 1976  
Maximum Barometer   29.66   30.30   30.15   -00.49   30.76   in 1990   29.41   in 1974  
Minimum Barometer   29.53   30.21   29.85   -00.32   30.48   in 2011   29.03   in 1989  
Average Barometer   29.60   30.26   30.00   -00.40   30.59   in 2011   29.23   in 1974  
Average Wind   6.9   2.6   7.4   -0.5   17.3   in 2002   1.8   in 1962  
Direction   NW   NE   WNW       WNW         SSE        
High Wind Gust   25   9   24   +1   48   in 2009   8   in 1999  
Direction   W   N   WNW       SSW         NW        
High Heat Index                                      
Wind Chill   38   32   23   +15             -12   in 1976  
Maximum Water Temp   46.2   50.9   48.7   -2.5   53.1   in 2001   43.0   in 1997  
Minimum Water Temp   45.1   49.1   46.3   -1.2   50.5   in 2001   39.6   in 2003  
Average Water Temp   45.7   50.0   47.5   -1.8   51.8   in 2001   41.4   in 1997  
Sunrise/ AM Twilight   6:54:59 AM   6:24:08 AM            
Sunset / PM Twilight   4:15:47 PM   4:46:38 PM            
Length Of Day   9:20:48                          
Special Conditions   Fog                                  
Comments      
    December 3, 2018     Record Record
Month-to-Date Summary   Observed   2017   Normal Depart Highest Lowest
 Avg Maximum Temperature   52.3   47.0   46.7   +5.7   57.7   in 1932   25.7   in 1896  
Avg Minimum Temperature   38.3   34.7   33.0   +5.3   43.3   in 1998   14.3   in 1989  
Average Temperature   45.3   40.8   39.7   +5.7   50.0   in 1998   21.8   in 1896  
Total Precipitation   1.15   .04   .45   +.70   2.35   in 1925   .00   in 2011  
Total Snow   0.0   0.0   0.5   -0.5   3.4   in 1894   0.0   in    
Total HDD   58   72   75   -17   129   in 1896   44   in 1998  
Total CDD   0   0   0   +0   807   in 2016   290   in 1902  
Avg Maximum Dew Point   48.7   39.7   38.8   +9.9   52.7   in 2006   13.3   in 1976  
Avg Minimum Dew Point   33.0   29.0   20.2   +12.8   37.3   in 1982   -1.3   in 1989  
Average  Dew Point   40.8   34.3   28.0   +12.8   43.5   in 2015   6.7   in 1976  
    December 3, 2018     Record Record
Year-to-Date Summary   Observed   2017   Normal Depart Highest Lowest
Total Precipitation   50.38   39.15   44.30   +6.08   60.42   in 1983   24.15   in 1957  
Total Snow (since Jul 1 18)   4.2   0.0   1.6   +2.6   19.5   in 1898   0.0   in    
Total HDD (since Jul 1 18)   1118   869   1107   +11   1418   in 1904   842   in 2011  
Total CDD (since Jan 1)   775   580   563   +212   807   in 2016   290   in 1902  
                             
Hour-by-Hour Weather For December 3, 2018  
Climate Weather for December 3  
Weather History For December 3  
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