Portsmouth Rhode Island Weather Almanac
Tuesday, March 12, 2019
Mostly Cloudy early then Partly Cloudy, Windy and Cooler
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2019  
    March 12, 2019     Record Record
Observed Daily Data   Observed   2018   Normal   Depart   Highest Lowest
Maximum Temperature   43   46   45   -2   65   in 1973   26   in 2017  
Minimum Temperature   32   30   29   +3   44   in 1982   9   in 1900  
Average Temperature   38   38   37   +1   55   in 1973   19   in 1900  
Precipitation   .00   .00   .17   -.17   2.05   in 1985            
One Hour   .00   .00           .59   in 1959            
Snow   0.0   0.0   0.2   -0.2   7.6   in 1939            
Snow Depth   T   0           12   in 1941            
HDD   27   27   28   -1   46   in 1900   10   in 1973  
CDD   0   0   0   +0   0   in              
Maximum Dew Point   26   32   33   -7   53   in 1973   1   in 1984  
Minimum Dew Point   21   24   18   +3   44   in 1982   -10   in 1984  
Average  Dew Point   24   28   26   -2   47   in 1982   -5   in 1984  
Maximum Humidity   69%   81%   83%   -14%   100%   in 2013   44%   in 1984  
Minimum Humidity   46%   52%   48%   -2%   91%   in 2013   19%   in 1974  
Average Humidity   58%   67%   66%   -8%   96%   in 2013   33%   in 1974  
Maximum Barometer   30.25   30.08   30.15   +00.10   30.72   in 1995   29.30   in 1983  
Minimum Barometer   29.99   29.76   29.79   +00.20   30.56   in 1995   28.90   in 1983  
Average Barometer   30.12   29.92   29.97   +00.15   30.64   in 1995   29.10   in 1983  
Average Wind   12.7   7.8   8.4   +4.3   18.0   in 1980   2.8   in 1964  
Direction   NW   NNE   WNW       WNW         SW        
High Wind Gust   28   27   27   +1   47   in 1980   12   in 1964  
Direction   NW   ENE   WNW       W         S        
High Heat Index                                      
Wind Chill   23   24   20   +3             -8   in 1984  
Maximum Water Temp   37.4   38.5   39.4   -2.0   45.8   in 2012   35.1   in 2005  
Minimum Water Temp   36.0   37.1   37.8   -1.8   43.7   in 2012   33.6   in 2017  
Average Water Temp   36.7   37.8   38.7   -2.0   44.8   in 2012   34.8   in 2005  
Sunrise/ AM Twilight   7:00:49 AM   6:33:19 AM            
Sunset / PM Twilight   6:48:49 PM   7:16:19 PM            
Length Of Day   11:48:00                          
Special Conditions   None                                  
Comments      
    March 12, 2019     Record Record
Month-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
 Avg Maximum Temperature   37.8   44.0   43.5   -5.8   52.5   in 1894   32.1   in 1916  
Avg Minimum Temperature   24.6   31.9   28.2   -3.6   36.4   in 1973   18.2   in 1950  
Average Temperature   31.2   38.0   35.6   -4.4   43.8   in 1973   26.1   in 1916  
Total Precipitation   2.41   4.38   1.95   +.46   5.49   in 1983   T   in 1894  
Total Snow   9.6   1.2   2.5   +7.1   18.9   in 1941   0.0   in 2011  
Total HDD   402   322   350   +52   464   in 1916   250   in 1973  
Total CDD   0   0   0   +0   0   in     0   in    
Avg Maximum Dew Point   27.9   33.3   31.8   -3.9   41.4   in 1973   17.9   in 1960  
Avg Minimum Dew Point   14.3   26.0   16.7   -2.5   30.6   in 1973   2.4   in 1950  
Average  Dew Point   21.1   29.6   24.3   -3.2   36.0   in 1973   11.6   in 1960  
    March 12, 2019     Record Record
Year-to-Date Summary   Observed   2018   Normal Depart Highest Lowest
Total Precipitation   11.52   15.35   9.15   +2.37   18.97   in 1979   3.23   in 1980  
Total Snow (since Jul 1 18)   20.9   31.6   28.2   -7.3   75.0   in 2005   4.7   in 1998  
Total HDD (since Jul 1 18)   4290   3967   4301   -11   5210   in 1918   3462   in 2016  
Total CDD (since Jan 1)   0   0   0   +0   0   in     0   in    
                             
Hour-by-Hour Weather For March 12, 2019  
Climate Weather for March 12  
Weather History For March 12  
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