Portsmouth Rhode Island Weather Almanac
Sunday, March 17, 2019
Clear Morning, Partly Cloudy Day to Clear Evening, Windy and Colder
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    March 17, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   43   44   46   -3   66   in 2003   25   in 1967  
Minimum Temperature   30   26   31   -1   50   in 1990   10   in 1916  
Average Temperature   37   35   38   -1   55   in 1990   18   in 1916  
Precipitation   .00   .00   .17   -.17   1.60   in 2007            
One Hour   .00   .00           .35   in 2007            
Snow   0.0   0.0   0.2   -0.2   2.0   in 1932            
Snow Depth   0   1           11   in 1896            
HDD   28   30   26   +2   47   in 1916   10   in 1990  
CDD   0   0   0   +0   0   in              
Maximum Dew Point   22   18   34   -12   59   in 1990   9   in 1967  
Minimum Dew Point   12   6   20   -8   50   in 1990   -7   in 1961  
Average  Dew Point   17   12   27   -10   55   in 1990   2   in 1967  
Maximum Humidity   68%   65%   83%   -15%   100%   in 2007   54%   in 1981  
Minimum Humidity   31%   30%   47%   -16%   91%   in 1968   23%   in 1959  
Average Humidity   50%   48%   65%   -16%   96%   in 1968   41%   in 1961  
Maximum Barometer   30.21   29.82   30.05   +00.16   30.61   in 1998   29.22   in 1981  
Minimum Barometer   30.05   29.58   29.76   +00.29   30.48   in 1998   28.88   in 1974  
Average Barometer   30.13   29.70   29.91   +00.22   30.55   in 1998   29.12   in 1981  
Average Wind   10.4   13.1   9.2   +1.2   20.1   in 2000   2.5   in 2012  
Direction   WNW   W   WNW       N         S        
High Wind Gust   28   33   28   -0   61   in 1956   9   in 2003  
Direction   NW   WNW   WNW       NNW         S        
High Heat Index                                      
Wind Chill   20   15   20   +0             -5   in 1956  
Maximum Water Temp   38.7   38.6   40.4   -1.7   46.4   in 2012   36.2   in 2015  
Minimum Water Temp   37.2   36.9   38.2   -1.0   44.7   in 2012   34.9   in 2015  
Average Water Temp   38.0   37.8   39.3   -1.4   45.6   in 2012   35.6   in 2015  
Sunrise/ AM Twilight   6:52:26 AM   6:24:55 AM            
Sunset / PM Twilight   6:54:24 PM   7:21:55 PM            
Length Of Day   12:01:58                          
Special Conditions   None                                  
Comments      
    March 17, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   40.8   43.0   44.1   -3.4   52.1   in 1973   32.2   in 1916  
Avg Minimum Temperature   27.5   31.0   28.7   -1.2   37.8   in 1973   19.7   in 1950  
Average Temperature   34.1   37.0   36.2   -2.1   44.9   in 1973   26.3   in 1916  
Total Precipitation   2.49   5.01   2.80   -.31   5.80   in 2000   .08   in 1915  
Total Snow   9.6   10.7   3.5   +6.1   20.3   in 1916   0.0   in 2011  
Total HDD   520   472   485   +35   654   in 1916   336   in 1973  
Total CDD   0   0   0   +0   0   in     0   in    
Avg Maximum Dew Point   31.1   31.1   32.4   -1.3   42.1   in 1973   20.1   in 1960  
Avg Minimum Dew Point   17.1   23.7   17.4   -0.3   30.2   in 1973   3.6   in 1980  
Average  Dew Point   24.1   27.4   24.9   -0.8   36.2   in 1973   14.6   in 1950  
    March 17, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   11.60   15.98   10.00   +1.60   19.20   in 1979   4.55   in 1980  
Total Snow (since Jul 1 18)   20.9   41.1   29.2   -8.3   75.0   in 2005   4.7   in 1998  
Total HDD (since Jul 1 18)   4408   4117   4436   -28   5366   in 1905   3546   in 2016  
Total CDD (since Jan 1)   0   0   0   +0   0   in     0   in    
                             
Hour-by-Hour Weather For March 17, 2019  
Climate Weather for March 17  
Weather History For March 17  
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