Portsmouth Rhode Island Weather Almanac
Friday, March 19, 2021
Cloudy, Light Rain and Snow early then Clear, Windy and Colder
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    March 19, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   41   49   46   -5   68   in 2012   27   in 1967  
Minimum Temperature   31   41   31   +0   44   in 1983   7   in 1967  
Average Temperature   36   45   39   -3   56   in 2012   17   in 1967  
 Month Avg Max Temperature   44.2   51.2   43.7   +0.5   51.6   in 1894   31.6   in 1916  
Month Avg Min Temperature   27.0   35.3   29.1   -2.1   37.1   in 1973   19.5   in 1916  
Month Average Temperature   35.9   43.5   36.7   -0.8   44.6   in 1973   25.8   in 1916  
HDD   29   20   26   +3   48   in 1967   9   in 2012  
Month HDD   553   409   538   +15   745   in 1916   388   in 1973  
Season HDD   4120   3970   4364   -244   5410   in 1905   3592   in 2016  
CDD   0   0   0   +0   0   in   0   in    
Month CDD   0   0   0   +0   0   in     0   in    
Year CDD   0   0   0   +0   0   in     0   in    
Maximum Dew Point   38   45   35   +3   57   in 2012   5   in 1967  
Minimum Dew Point   6   35   21   -15   43   in 1983   -13   in 1967  
Average  Dew Point   22   40   28   -6   50   in 2012   -4   in 1967  
 Month Avg Max Dew Point   28.1   38.6   33.4   -5.4   40.8   in 1973   21.5   in 1960  
Month Avg Min Dew Point   10.5   22.8   18.5   -7.9   29.4   in 1983   4.3   in 1950  
Month Average Dew Point   19.3   30.7   26.3   -7.0   35.0   in 1973   14.9   in 1950  
Precipitation   .05   1.16   .15   -.10   2.23   in 1899            
One Hour   .03   .40           .41   in 1983            
Hourly Rate   .03   .69           .69   in 2020            
Month Precipitation   1.88   2.24   2.60   -.72   8.05   in 1968   .08   in 1915  
Year Precipitation   7.38   8.05   9.70   -2.32   19.20   in 1979   5.30   in 1901  
Snow   T   0.0   0.2   -0.2   14.7   in 1956            
Snow Depth   0   0           7   in 1956            
Month Snow   T   0.7   4.0   -4.0   27.8   in 1956   0.0   in 2011  
Season Snow   27.7   12.9   31.3   -3.6   75.0   in 2005   4.7   in 1998  
    March 19, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   92%   95%   84%   +8%   100%   in 2002   53%   in 2018  
Minimum Humidity   25%   79%   49%   -24%   94%   in 1983   18%   in 1954  
Average Humidity   59%   87%   66%   -8%   97%   in 1983   38%   in 1959  
Maximum Barometer   30.40   30.46   30.14   +00.26   30.75   in 1993   29.45   in 1981  
Minimum Barometer   29.78   30.14   29.81   -00.03   30.56   in 1993   28.93   in 1899  
Average Barometer   30.09   30.30   29.97   +00.12   30.66   in 1993   29.30   in 1991  
Average Wind   11.9   9.8   8.4   +3.5   21.3   in 1986   2.6   in 1997  
Direction   NNE   E   WNW       SSW         SSE        
High Wind Gust   35   25   26   +9   55   in 1986   12   in 1997  
Direction   NNE   ESE   WNW       SW         SE        
High Heat Index                                      
Wind Chill   20   35   22   -2             -7   in 1967  
Maximum Water Temp   38.3   40.3   40.5   -2.2   48.9   in 2012   35.0   in 2015  
Minimum Water Temp   37.6   38.7   38.6   -1.0   46.0   in 2012   33.1   in 2015  
Average Water Temp   38.0   39.5   39.6   -1.7   47.5   in 2012   34.1   in 2015  
Sunrise/ AM Twilight   6:48:11 AM   6:20:38 AM            
Sunset / PM Twilight   6:57:11 PM   7:24:43 PM            
Length Of Day   12:09:00                          
Special Conditions   None                              
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