Portsmouth Rhode Island Weather Almanac
Wednesday, March 31, 2021
Mostly Cloudy to Cloudy PM with Light Rain and Fog, Windy and Very Warm
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    March 31, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   62   47   50   +12   71   in 1981   35   in 1970  
Minimum Temperature   45   32   35   +10   49   in 1998   15   in 1923  
Average Temperature   54   40   43   +11   59   in 1998   26   in 1923  
 Month Avg Max Temperature   49.5   51.0   45.6   +3.9   52.0   in 1946   36.0   in 1916  
Month Avg Min Temperature   31.4   35.6   30.7   +0.6   37.4   in 2012   23.4   in 1916  
Month Average Temperature   40.7   43.6   38.4   +2.3   44.9   in 2012   30.0   in 1916  
HDD   11   25   22   -11   39   in 1923   6   in 1998  
Month HDD   753   664   824   -71   1086   in 1916   622   in 2012  
Season HDD   4320   4225   4650   -330   5689   in 1918   3858   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   54   36   38   +16   56   in 1998   12   in 1965  
Minimum Dew Point   42   25   25   +17   47   in 1987   2   in 1964  
Average  Dew Point   48   31   32   +16   51   in 1998   8   in 1965  
 Month Avg Max Dew Point   35.4   39.8   34.6   +0.7   41.6   in 2012   25.9   in 1960  
Month Avg Min Dew Point   18.7   24.2   20.2   -1.4   27.9   in 2010   11.1   in 1950  
Month Average Dew Point   27.0   32.0   27.7   -0.6   34.6   in 2012   19.4   in 1960  
Precipitation   .04   .00   .14   -.10   2.13   in 1997            
One Hour   .02   .00           .68   in 1987            
Hourly Rate   .00   .00           2.53   in 2004            
Month Precipitation   2.92   4.95   4.36   -1.44   13.24   in 2010   .32   in 1915  
Year Precipitation   8.42   10.76   11.46   -3.04   20.09   in 2010   6.16   in 2012  
Snow   0.0   0.0   0.1   -0.1   5.9   in 1970            
Snow Depth   0   0           4   in 1984            
Month Snow   T   0.7   5.7   -5.7   31.6   in 1956   0.0   in 1903  
Season Snow   27.7   12.9   33.0   -5.3   78.0   in 2005   5.0   in 1998  
    March 31, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   98%   92%   87%   +11%   100%   in 2004   44%   in 1950  
Minimum Humidity   68%   44%   52%   +16%   97%   in 1987   14%   in 1963  
Average Humidity   83%   68%   70%   +13%   99%   in 1987   39%   in 1965  
Maximum Barometer   30.32   30.07   30.07   +00.25   30.70   in 2008   29.35   in 1974  
Minimum Barometer   29.84   29.97   29.78   +00.06   30.37   in 1967   29.01   in 1974  
Average Barometer   30.08   30.02   29.93   +00.15   30.50   in 1967   29.18   in 1974  
Average Wind   11.1   11.0   8.5   +2.6   21.2   in 1987   3.2   in 1996  
Direction   S   NNE   NE       SSE         S        
High Wind Gust   33   23   27   +6   51   in 1997   11   in 1973  
Direction   S   N   NW       NNE         S        
High Heat Index                                      
Wind Chill   42   27   27   +15             6   in 1964  
Maximum Water Temp   43.6   40.1   43.0   +0.6   47.3   in 1998   38.7   in 2014  
Minimum Water Temp   41.8   38.3   40.5   +1.3   46.0   in 2012   #N/A   in 2015  
Average Water Temp   42.7   39.2   41.8   +0.9   46.6   in 2012   37.9   in 2015  
Sunrise/ AM Twilight   6:27:53 AM   6:00:00 AM            
Sunset / PM Twilight   7:10:17 PM   7:38:09 PM            
Length Of Day   12:42:24                          
Special Conditions   Fog                                  
Comments      
Hour-by-Hour Weather For March 31, 2021  
Climate Weather for March 31  
Weather History For March 31  
Weather Calendar  
Back To Weather Stat Page  
Home