Portsmouth Rhode Island Weather Almanac  
Monday, March 27, 2023  
Clear to Cloudy and Rain PM, Light Winds and Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    March 27, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   56   49   49   +7   70   in 1998   31   in 1894  
Minimum Temperature   36   31   34   +2   46   in 1948   16   in 1975  
Average Temperature   46   40   42   +4   57   in 1998   25   in 1894  
 Month Avg Max Temperature   47.5   50.5   45.0   +2.5   52.3   in 2012   34.1   in 1916  
Month Avg Min Temperature   33.7   33.5   30.1   +3.6   37.6   in 2012   21.6   in 1916  
Month Average Temperature   40.8   42.3   37.8   +3.0   45.2   in 2012   28.1   in 1916  
High Heat Index                                      
Low Wind Chill   35   21   24   +11             -1   in 1975  
Heating Degree Days   19   25   23   -4   40   in 1894   8   in 1998  
Month HDD   654   613   734   -80   996   in 1916   534   in 2012  
Season HDD   3964   4183   4560   -596   5609   in 1905   3775   in 2012  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   40   38   37   +3   55   in 1998   6   in 1975  
Minimum Dew Point   25   15   23   +2   42   in 1998   -3   in 1982  
Average  Dew Point   33   27   30   +3   49   in 1998   3   in 1975  
 Month Avg Max Dew Point   37.3   41.0   34.2   +3.1   41.7   in 2012   23.1   in 1960  
Month Avg Min Dew Point   24.9   23.3   19.6   +5.3   28.0   in 2012   9.6   in 1950  
Month Average Dew Point   31.3   32.1   27.1   +4.2   34.9   in 2012   16.5   in 1960  
Precipitation   .27   T   .15   +.12   1.22   in 1948            
One Hour   .16   T           .36   in 1988            
Hourly Rate   .41   .00           .41   in 2023            
Month Precipitation   4.16   3.11   3.80   +.36   8.47   in 1983   .22   in 1915  
Year Precipitation   13.29   12.50   10.90   +2.39   19.47   in 1979   5.76   in 2012  
Snow   0.0   0.0   0.1   -0.1   1.3   in 1959       in    
Snow Depth   0   0           5   in 2001       in    
Month Snow   0.1   0.5   5.3   -5.2   30.6   in 1956   0.0   in 1919  
Season Snow   9.1   34.2   32.6   -23.5   78.0   in 2005   5.0   in 1998  
    March 27, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   94%   93%   83%   +11%   100%   in 2017   39%   in 2012  
Minimum Humidity   33%   47%   45%   -12%   90%   in 2015   13%   in 2012  
Average Humidity   64%   70%   64%   -0%   95%   in 1978   26%   in 2012  
Maximum Barometer   30.09   29.67   30.11   -00.02   30.70   in 2018   29.37   in 1955  
Minimum Barometer   29.97   29.42   29.82   +00.15   30.36   in 2019   29.22   in 1955  
Average Barometer   30.03   29.55   29.97   +00.06   30.46   in 2019   29.30   in 1955  
Average Wind   4.7   9.6   8.7   -4.0   23.6   in 1955   3.2   in 2008  
Direction   SSE   WNW   WNW       WSW WNW
High Wind Gust   17   30   28   -11   60   in 1955   13   in 1957  
Direction   SSE   NW   NW       WSW NE
Maximum Water Temp   46.6   45.7   42.1   +4.5   46.6   in 2023   37.9   in 2014  
Minimum Water Temp   43.7   44.2   39.7   +4.0   44.5   in 2012   35.6   in 2014  
Average Water Temp   45.2   45.0   40.9   +4.2   45.3   in 2012   36.8   in 2014  
Sunrise/ AM Twilight   6:36:52 AM   7:06:53 AM            
Sunset / PM Twilight   7:04:43 PM   7:33:40 PM            
Length Of Day   12:27:51                          
Special Conditions   None                              
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