Portsmouth Rhode Island Weather Almanac
Wednesday, March 24, 2021
Partly Cloudy to Cloudy Evening, Light Rain Late, Light Fog, Low Winds and Continued Warm
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    March 24, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   61   51   48   +13   66   in 1938   28   in 1940  
Minimum Temperature   37   36   33   +4   46   in 1903   12   in 1906  
Average Temperature   49   44   41   +8   53   in 1938   22   in 1940  
 Month Avg Max Temperature   47.0   51.1   44.5   +2.5   52.5   in 2012   32.0   in 1916  
Month Avg Min Temperature   28.4   35.0   29.8   -1.3   38.1   in 2012   20.1   in 1916  
Month Average Temperature   38.0   43.3   37.4   +0.6   45.5   in 2012   26.3   in 1916  
HDD   16   21   24   -8   43   in 1940   12   in 1938  
Month HDD   649   521   663   -14   928   in 1916   467   in 2012  
Season HDD   4216   4082   4489   -273   5556   in 1905   3708   in 2012  
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   49   40   36   +13   56   in 1974   9   in 2014  
Minimum Dew Point   37   32   22   +15   44   in 1953   -1   in 2014  
Average  Dew Point   43   36   29   +14   48   in 1953   4   in 2014  
 Month Avg Max Dew Point   31.0   39.5   33.9   -2.9   42.7   in 2012   22.6   in 1960  
Month Avg Min Dew Point   14.0   22.7   19.1   -5.2   29.8   in 2012   8.3   in 1950  
Month Average Dew Point   22.5   31.1   26.8   -4.3   36.3   in 2012   16.5   in 1960  
Precipitation   .01   .05   .15   -.14   1.43   in 1993            
One Hour   .01   .02           .34   in 1989            
Hourly Rate   .00   .05           .06   in 2007            
Month Precipitation   1.89   3.92   3.35   -1.46   8.47   in 1983   .22   in 1915  
Year Precipitation   7.39   9.73   10.45   -3.06   19.24   in 1998   5.76   in 2012  
Snow   0.0   T   0.2   -0.2   3.5   in 1896            
Snow Depth   0   0           7   in 1967            
Month Snow   T   0.7   5.0   -5.0   30.6   in 1956   0.0   in 1947  
Season Snow   27.7   12.9   32.3   -4.6   78.0   in 2005   5.0   in 1998  
    March 24, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   97%   95%   83%   +14%   100%   in 2003   49%   in 2014  
Minimum Humidity   59%   61%   47%   +12%   93%   in 1953   20%   in 1973  
Average Humidity   78%   78%   65%   +13%   97%   in 1953   36%   in 2014  
Maximum Barometer   30.28   30.20   30.11   +00.17   30.88   in 1906   29.52   in 1950  
Minimum Barometer   30.13   29.81   29.81   +00.32   30.39   in 2004   29.11   in 1950  
Average Barometer   30.21   30.01   29.96   +00.25   30.50   in 2004   29.32   in 1950  
Average Wind   3.2   11.4   8.1   -4.9   16.8   in 1968   3.1   in 1981  
Direction   SE   N   NW       SW         E        
High Wind Gust   15   31   26   -11   47   in 1926   13   in 2015  
Direction   SE   NNW   NW       NW         WNW        
High Heat Index                                      
Wind Chill   37   24   23   +14             5   in 2014  
Maximum Water Temp   40.1   39.8   41.2   -1.1   50.0   in 2012   36.5   in 2015  
Minimum Water Temp   38.9   37.6   39.0   -0.1   47.7   in 2012   34.4   in 2015  
Average Water Temp   39.5   38.7   40.2   -0.7   48.9   in 2012   35.5   in 2015  
Sunrise/ AM Twilight   6:39:42 AM   6:12:03 AM            
Sunset / PM Twilight   7:02:40 PM   7:30:18 PM            
Length Of Day   12:22:58                          
Special Conditions   Fog                                  
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