Portsmouth Rhode Island Weather Almanac
Saturday, March 21, 2020
Mostly Cloudy & Warm early, Partly Cloudy Day to Clear and Colder PM, Breezy
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    March 21, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   59   48   47   +12   71   in 1921   26   in 1912  
Minimum Temperature   33   35   31   +2   50   in 2012   13   in 1986  
Average Temperature   46   42   39   +7   60   in 2012   23   in 1986  
Precipitation   .00   .06   .17   -.17   1.78   in 1983        
One Hour   .00   .06           .79   in 1983            
Snow   0.0   0.0   0.1   -0.1   5.3   in 1912            
Snow Depth   0   0           15   in 1956            
HDD   19   23   25   -6   42   in 1986   5   in 2012  
CDD   0   0   0   +0   0   in              
Maximum Dew Point   53   40   35   +18   58   in 2012   7   in 1988  
Minimum Dew Point   12   31   21   -9   50   in 2012   -11   in 1988  
Average  Dew Point   33   36   28   +5   54   in 2012   -2   in 1988  
Maximum Humidity   85%   92%   87%   -2%   100%   in 2012   52%   in 1988  
Minimum Humidity   22%   52%   53%   -31%   93%   in 2003   19%   in 1991  
Average Humidity   54%   72%   70%   -17%   97%   in 2003   37%   in 1985  
Maximum Barometer   30.45   30.33   30.05   +00.40   30.80   in 2007   29.38   in 1958  
Minimum Barometer   29.83   29.78   29.73   +00.10   30.57   in 2007   29.03   in 1958  
Average Barometer   30.14   30.06   29.88   +00.26   30.69   in 2007   29.21   in 1958  
Average Wind   10.9   10.4   8.6   +2.3   18.8   in 2008   1.8   in 2005  
Direction   NW   SE   WNW       WNW         WNW        
High Wind Gust   31   22   27   +4   45   in 1980   11   in 1952  
Direction   NNW   SE   WNW       ESE         SSE        
Wind Chill   28   29   22   +6             -4   in 1986  
Maximum Water Temp   40.6   38.7   40.9   -0.3   49.8   in 2012   36.0   in 2015  
Minimum Water Temp   39.4   37.8   38.9   +0.5   47.5   in 2012   34.7   in 2015  
Average Water Temp   40.0   38.3   39.9   +0.1   48.7   in 2012   35.4   in 2015  
Sunrise/ AM Twilight   6:44:23 AM   6:16:48 AM            
Sunset / PM Twilight   6:59:39 PM   7:27:14 PM            
Length Of Day   12:15:16                          
Special Conditions   None                                  
Comments      
    March 21, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   52.0   41.9   44.6   +7.3   #N/A   in #N/A   31.6   in 1916  
Avg Minimum Temperature   35.5   27.8   29.1   +6.4   #N/A   in #N/A   19.8   in 1916  
Average Temperature   43.7   34.8   36.7   +7.1   #N/A   in #N/A   25.7   in 1916  
Total Precipitation   2.24   2.55   3.48   -1.24   #N/A   in #N/A   .08   in 1915  
Total Snow   0.7   9.6   4.1   -3.4   #N/A   in #N/A   0.0   in 1947  
Total HDD   442   627   588   -146   #N/A   in #N/A   437   in 2010  
Total CDD   0   0   0   +0   0   in     0   in    
Avg Maximum Dew Point   40.0   30.7   32.9   +7.1   #N/A   in #N/A   22.0   in 1960  
Avg Minimum Dew Point   23.1   17.4   18.0   +5.2   #N/A   in #N/A   5.7   in 1950  
Average  Dew Point   31.6   24.0   25.4   +6.1   #N/A   in #N/A   15.8   in 1950  
    March 21, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   8.05   11.66   10.68   -2.63   19.23   in 1979   5.75   in 2012  
Total Snow (since Jul 1 18)   12.9   20.9   29.8   -16.9   75.0   in 2005   4.8   in 1998  
Total HDD (since Jul 1 18)   4003   4515   4539   -536   5468   in 1905   3649   in 2016  
Total CDD (since Jan 1)   0   0   0   +0   0   in     0   in    
                             
Hour-by-Hour Weather For March 21, 2020  
Climate Weather for March 21  
Weather History For March 21  
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