Portsmouth Rhode Island Weather Almanac
Thursday, March 11, 2021
Partly Cloudy, Windy and Much Warmer
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    March 11, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   57   57   44   +13   63   in 1977   22   in 2017  
Minimum Temperature   37   39   29   +8   44   in 1925   9   in 1939  
Average Temperature   47   48   37   +10   50   in 2016   19   in 2017  
 Month Avg Max Temperature   43.7   52.1   42.5   +1.2   52.7   in 1894   31.8   in 1916  
Month Avg Min Temperature   25.8   35.1   28.0   -2.2   35.7   in 1973   16.7   in 1950  
Month Average Temperature   35.1   43.7   35.6   -0.5   44.2   in 1974   26.3   in 1916  
HDD   18   17   28   -10   46   in 2017   15   in 2016  
Month HDD   329   234   323   +6   426   in 1916   229   in 1974  
Season HDD   3896   3795   4149   -253   5182   in 1918   3437   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   45   48   34   +11   54   in 2016   7   in 1960  
Minimum Dew Point   36   31   19   +17   38   in 2011   -10   in 1953  
Average  Dew Point   41   40   27   +14   46   in 2016   -1   in 1960  
 Month Avg Max Dew Point   27.4   38.5   32.6   -5.3   40.4   in 1973   17.1   in 1960  
Month Avg Min Dew Point   11.5   22.6   17.4   -5.8   29.8   in 1973   0.3   in 1950  
Month Average Dew Point   19.5   30.6   25.4   -5.9   35.1   in 1973   11.3   in 1953  
Precipitation   .00   .00   .14   -.14   3.38   in 2000            
One Hour   .00   .00           .87   in 2000            
Hourly Rate   .00   .00           .75   in 2011            
Month Precipitation   .45   .39   1.45   -1.00   5.20   in 1994   T   in 1894  
Year Precipitation   5.95   6.20   8.55   -2.60   18.97   in 1979   3.23   in 1980  
Snow   0.0   0.0   0.2   -0.2   4.4   in 1924            
Snow Depth   0   0           13   in 1941            
Month Snow   0.0   0.6   2.4   -2.4   18.9   in 1941   0.0   in 2021  
Season Snow   27.7   12.8   29.7   -2.0   74.5   in 1996   4.7   in 1998  
    March 11, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   96%   90%   84%   +12%   100%   in 2015   44%   in 1974  
Minimum Humidity   60%   41%   47%   +13%   94%   in 2011   16%   in 1957  
Average Humidity   78%   66%   66%   +12%   97%   in 2011   37%   in 1974  
Maximum Barometer   30.43   30.14   30.12   +00.31   30.81   in 1996   29.43   in 1969  
Minimum Barometer   30.02   29.89   29.80   +00.22   30.44   in 1995   28.94   in 1992  
Average Barometer   30.23   30.02   29.96   +00.26   30.62   in 1996   29.24   in 1992  
Average Wind   10.5   7.9   8.5   +2.0   18.2   in 2017   1.1   in 1996  
Direction   SW   NW   WNW       WNW         SSE        
High Wind Gust   31   22   28   +4   52   in 1955   11   in 1996  
Direction   SSW   NW   NW       SSW         S        
High Heat Index                                      
Wind Chill   34   36   19   +15             -6   in 1960  
Maximum Water Temp   39.8   39.7   39.5   +0.3   44.2   in 2012   35.2   in 2005  
Minimum Water Temp   37.7   38.1   37.7   -0.0   42.4   in 2012   32.6   in 2003  
Average Water Temp   38.8   38.9   38.6   +0.1   43.3   in 2012   34.0   in 2003  
Sunrise/ AM Twilight   6:01:34 AM   5:34:03 AM            
Sunset / PM Twilight   5:48:19 PM   6:15:49 PM            
Length Of Day   11:46:45                          
Special Conditions   None                              
Comments      
Hour-by-Hour Weather For March 11, 2021  
Climate Weather for March 11  
Weather History For March 11  
Weather Calendar  
Back To Weather Stat Page  
Home