Portsmouth Rhode Island Weather Almanac  
Thursday, March 9, 2023  
Mostly Cloudy early, Partly Cloudy Day To Cloudy PM, Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    March 9, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   50   38   43   +7   61   in 2021   23   in 1996  
Minimum Temperature   36   31   29   +7   45   in 1921   7   in 2007  
Average Temperature   43   35   36   +7   51   in 2020   17   in 1996  
 Month Avg Max Temperature   45.9   45.4   42.2   +3.7   53.8   in 1974   31.2   in 1916  
Month Avg Min Temperature   32.0   29.8   27.8   +4.2   37.6   in 1974   16.8   in 1950  
Month Average Temperature   39.1   38.0   35.3   +3.8   46.0   in 1974   24.8   in 1978  
High Heat Index                                      
Low Wind Chill   28   26   18   +10             -8   in 2005  
Heating Degree Days   22   30   29   -7   48   in 1996   14   in 2020  
Month HDD   233   243   267   -34   362   in 1978   171   in 1974  
Season HDD   3543   3813   4093   -550   5114   in 1905   3416   in 2016  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   33   33   33   +0   51   in 1998   4   in 1991  
Minimum Dew Point   27   19   18   +9   41   in 2002   -15   in 2007  
Average  Dew Point   30   26   26   +4   46   in 2002   -1   in 1991  
 Month Avg Max Dew Point   33.9   39.4   32.4   +1.4   40.9   in 2008   15.2   in 1978  
Month Avg Min Dew Point   23.0   17.2   17.1   +5.9   32.0   in 1998   -0.9   in 1950  
Month Average Dew Point   28.7   28.3   25.1   +3.6   35.6   in 1998   10.2   in 1978  
Precipitation   .00   .35   .13   -.13   1.95   in 1998            
One Hour   .00   .00           .41   in 1998            
Hourly Rate   .00   .00           .26   in 2012            
Month Precipitation   1.34   .59   1.17   +.17   4.38   in 2018   .00   in 1894  
Year Precipitation   10.47   9.98   8.27   +2.20   18.83   in 1979   2.98   in 1980  
Snow   0.0   0.5   0.2   -0.2   6.1   in 1928       in    
Snow Depth   0   0           19   in 2015       in    
Month Snow   0.1   0.5   2.0   -1.9   18.4   in 1941   0.0   in 2017  
Season Snow   9.1   34.2   29.3   -20.2   74.5   in 1996   4.7   in 1998  
    March 9, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   85%   97%   85%   +0%   100%   in 2003   40%   in 1991  
Minimum Humidity   45%   57%   48%   -3%   93%   in 1998   16%   in 1991  
Average Humidity   65%   77%   66%   -1%   97%   in 1998   28%   in 1991  
Maximum Barometer   30.16   30.21   30.16   +00.00   31.01   in 1942   29.19   in 1957  
Minimum Barometer   30.05   29.89   29.79   +00.26   30.58   in 2011   28.93   in 1957  
Average Barometer   30.11   30.05   29.97   +00.13   30.64   in 2011   29.06   in 1957  
Average Wind   8.4   4.7   8.4   -0.0   16.9   in 1950   2.6   in 2004  
Direction   NNW   NW   NW       SE SE
High Wind Gust   22   20   27   -5   48   in 2017   11   in 2004  
Direction   NNW   SSW   NW       W SW
Maximum Water Temp   41.9   42.3   39.2   +2.7   45.2   in 2012   32.2   in 2017  
Minimum Water Temp   40.8   40.5   37.5   +3.3   43.7   in 2012   32.5   in 2005  
Average Water Temp   41.4   41.4   38.6   +2.8   44.5   in 2012   33.6   in 2005  
Sunrise/ AM Twilight   6:07:09 AM   5:37:21 AM            
Sunset / PM Twilight   5:44:40 PM   6:13:35 PM            
Length Of Day   11:37:31                          
Special Conditions   None                              
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