Portsmouth Rhode Island Weather Almanac  
Tuesday, March 21, 2023  
Clear to Partly Cloudy PM and Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    March 21, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   55   59   47   +8   71   in 1921   26   in 1912  
Minimum Temperature   33   42   32   +1   50   in 2012   13   in 1986  
Average Temperature   44   51   40   +4   60   in 2012   23   in 1986  
 Month Avg Max Temperature   45.9   50.6   44.0   +1.8   52.0   in 2020   31.6   in 1916  
Month Avg Min Temperature   32.4   32.6   29.3   +3.1   36.7   in 1973   19.8   in 1916  
Month Average Temperature   39.3   41.9   37.0   +2.4   44.2   in 2010   25.9   in 1916  
High Heat Index                                      
Low Wind Chill   30   36   23   +7             -1   in 1986  
Heating Degree Days   21   14   25   -4   42   in 1986   5   in 2012  
Month HDD   539   485   589   -50   821   in 1916   437   in 2010  
Season HDD   3849   4055   4415   -566   5468   in 1905   3649   in 2016  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   34   35   36   -2   58   in 2012   7   in 1988  
Minimum Dew Point   22   19   21   +1   50   in 2012   -11   in 1988  
Average  Dew Point   28   27   29   -1   54   in 2012   -2   in 1988  
 Month Avg Max Dew Point   35.1   41.7   33.6   +1.5   41.7   in 2022   22.0   in 1960  
Month Avg Min Dew Point   23.2   22.9   18.7   +4.5   29.6   in 1983   5.7   in 1950  
Month Average Dew Point   29.4   32.3   26.5   +2.9   35.1   in 2012   15.8   in 1950  
Precipitation   .00   T   .15   -.15   1.78   in 1983            
One Hour   .00   T           .79   in 1983            
Hourly Rate   .00   .00           .30   in 2004            
Month Precipitation   3.48   1.65   2.90   +.58   8.46   in 1983   .08   in 1915  
Year Precipitation   12.61   11.04   10.00   +2.61   19.23   in 1979   5.75   in 2012  
Snow   0.0   0.0   0.2   -0.2   5.3   in 1912       in    
Snow Depth   0   0           15   in 1956       in    
Month Snow   0.1   0.5   4.4   -4.3   27.8   in 1956   0.0   in 1947  
Season Snow   9.1   34.2   31.7   -22.6   75.0   in 2005   4.8   in 1998  
    March 21, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   89%   74%   87%   +2%   100%   in 2012   52%   in 1988  
Minimum Humidity   30%   26%   52%   -22%   93%   in 2003   19%   in 1991  
Average Humidity   60%   50%   70%   -10%   97%   in 2003   37%   in 1985  
Maximum Barometer   30.36   30.01   30.06   +00.30   30.80   in 2007   29.38   in 1958  
Minimum Barometer   30.24   29.76   29.75   +00.49   30.57   in 2007   29.03   in 1958  
Average Barometer   30.30   29.89   29.90   +00.40   30.69   in 2007   29.21   in 1958  
Average Wind   6.6   12.0   8.6   -2.0   18.8   in 2008   1.8   in 2005  
Direction   SSW   WNW   WNW       WNW WNW
High Wind Gust   32   43   27   +5   45   in 1980   11   in 1952  
Direction   SW   NW   SW       ESE SSE
Maximum Water Temp   43.7   45.1   41.1   +2.6   49.8   in 2012   36.0   in 2015  
Minimum Water Temp   41.7   43.7   39.2   +2.5   47.5   in 2012   34.7   in 2015  
Average Water Temp   42.7   44.4   40.2   +2.5   48.7   in 2012   35.4   in 2015  
Sunrise/ AM Twilight   6:47:03 AM   7:17:13 AM            
Sunset / PM Twilight   6:58:08 PM   7:26:57 PM            
Length Of Day   12:11:05                          
Special Conditions   None                              
Comments      
Hour-by-Hour Weather For March 21, 2023            
Climate Weather for March 21            
Weather History For March 21            
Weather Calendar            
Back To Weather Stat Page            
Home