Portsmouth Rhode Island Weather Almanac
Thursday, March 25, 2021
Cloudy, Light Rain early, Mostly Cloudy PM, Foggy and Record Breaking Heat
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    March 25, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   66   44   48   +18   66   in 2021   30   in 1956  
Minimum Temperature   47   38   33   +14   47   in 2021   13   in 1956  
Average Temperature   57   41   41   +16   57   in 2021   22   in 1956  
 Month Avg Max Temperature   47.8   50.8   44.6   +3.2   52.3   in 2012   32.8   in 1916  
Month Avg Min Temperature   29.2   35.1   29.9   -0.7   38.2   in 2012   20.6   in 1916  
Month Average Temperature   38.7   43.2   37.5   +1.2   45.5   in 2012   27.0   in 1916  
HDD   8   24   24   -16   43   in 1956   8   in 2021  
Month HDD   657   545   687   -30   951   in 1916   487   in 2012  
Season HDD   4224   4106   4513   -289   5575   in 1905   3728   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   60   39   36   +24   60   in 2021   12   in 1974  
Minimum Dew Point   47   31   23   +24   47   in 2021   -5   in 1956  
Average  Dew Point   54   35   30   +24   54   in 2021   6   in 1983  
 Month Avg Max Dew Point   32.2   39.5   34.0   -1.8   42.7   in 2012   22.6   in 1960  
Month Avg Min Dew Point   15.3   23.0   19.3   -4.0   30.0   in 2012   8.9   in 1950  
Month Average Dew Point   23.7   31.3   26.9   -3.2   36.3   in 2012   16.3   in 1960  
Precipitation   .08   .00   .15   -.07   2.03   in 1969            
One Hour   .03   .00           .47   in 1969            
Hourly Rate   .04   .00           .17   in 2015            
Month Precipitation   1.97   3.92   3.50   -1.53   8.47   in 1983   .22   in 1915  
Year Precipitation   7.47   9.73   10.60   -3.13   19.47   in 1979   5.76   in 2012  
Snow   0.0   0.0   0.1   -0.1   1.7   in 1960            
Snow Depth   0   0           5   in 1967            
Month Snow   T   0.7   5.1   -5.1   30.6   in 1956   0.0   in 1947  
Season Snow   27.7   12.9   32.4   -4.7   78.0   in 2005   5.0   in 1998  
    March 25, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   99%   85%   83%   +16%   100%   in 2016   50%   in 1977  
Minimum Humidity   76%   68%   48%   +28%   93%   in 1953   20%   in 1983  
Average Humidity   88%   77%   66%   +21%   97%   in 1953   37%   in 1983  
Maximum Barometer   30.13   30.19   30.13   +00.00   30.78   in 1986   29.70   in 1975  
Minimum Barometer   30.01   30.00   29.83   +00.18   30.58   in 2004   28.97   in 1909  
Average Barometer   30.07   30.10   29.98   +00.09   30.62   in 2004   29.40   in 1969  
Average Wind   5.6   10.4   7.8   -2.2   18.1   in 1983   3.2   in 1981  
Direction   SE   NNE   N       N         ENE        
High Wind Gust   20   25   25   -5   54   in 1909   14   in 1975  
Direction   SW   NNE   SW       SE         SE        
High Heat Index                                      
Wind Chill   41   29   24   +17             -3   in 1956  
Maximum Water Temp   40.3   39.4   41.4   -1.1   48.9   in 2012   37.9   in 2015  
Minimum Water Temp   39.2   37.9   39.3   -0.1   46.9   in 2012   35.4   in 2015  
Average Water Temp   39.8   38.7   40.5   -0.7   47.9   in 2012   36.7   in 2015  
Sunrise/ AM Twilight   6:38:00 AM   6:10:20 AM            
Sunset / PM Twilight   7:03:45 PM   7:31:25 PM            
Length Of Day   12:25:45                          
Special Conditions   Dense Fog                              
Comments   8 high temperature & dew points records broken  
Hour-by-Hour Weather For March 25, 2021  
Climate Weather for March 25  
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