Portsmouth Rhode Island Weather Almanac  
Thursday, April 6, 2023  
Cloudy, Light Rain and Dense Fog AM, to Mostly Cloudy PM, Light Wind and Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    April 6, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   56   47   52   +4   73   in 1921   34   in 1982  
Minimum Temperature   41   41   37   +4   48   in 1962   19   in 1982  
Average Temperature   49   44   45   +4   57   in 1991   27   in 1982  
 Month Avg Max Temperature   53.5   53.3   51.2   +2.3   61.8   in 2010   40.7   in 1898  
Month Avg Min Temperature   39.2   37.8   36.2   +3.0   43.5   in 2010   25.0   in 1954  
Month Average Temperature   46.5   45.7   44.0   +2.5   52.8   in 2010   35.0   in 1954  
High Heat Index                                      
Low Wind Chill   39   36   28   +11             5   in 1982  
Heating Degree Days   16   21   20   -4   38   in 1982   8   in 1991  
Month HDD   111   116   126   -15   180   in 1954   73   in 2010  
Season HDD   4178   4416   4776   -598   5805   in 1918   3974   in 2012  
Cooling Degree Days   0   #N/A   0   +0   0   in     0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   54   46   40   +14   54   in 2023   22   in 2007  
Minimum Dew Point   41   39   26   +15   44   in 2010   0   in 1995  
Average  Dew Point   48   43   33   +15   49   in 2010   14   in 1995  
 Month Avg Max Dew Point   49.3   41.7   39.2   +10.2   50.8   in 2010   17.0   in 1965  
Month Avg Min Dew Point   30.2   28.0   25.5   +4.7   39.5   in 2010   7.2   in 1965  
Month Average Dew Point   39.8   34.8   32.3   +7.4   45.2   in 2010   12.1   in 1965  
Precipitation   .02   .65   .15   -.13   2.17   in 2009            
One Hour   .01   .17           .69   in 2009            
Hourly Rate   .00   .52           3.58   in 2017            
Month Precipitation   .68   .94   .90   -.22   3.72   in 2017   .00   in 1925  
Year Precipitation   14.18   13.84   12.36   +1.82   21.34   in 1998   6.44   in 2012  
Snow   0.0   0.0   0.0   +0.0   6.3   in 1982       in    
Snow Depth   0   0           2   in 1915       in    
Month Snow   0.0   0.0   0.5   -0.5   7.9   in 1915   0.0   in 2023  
Season Snow   9.1   34.2   33.5   -24.4   78.0   in 2005   5.0   in 1998  
    April 6, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   98%   86%   +13%   100%   in 2017   52%   in 1992  
Minimum Humidity   61%   87%   47%   +14%   94%   in 1987   18%   in 2013  
Average Humidity   80%   93%   66%   +14%   97%   in 1987   37%   in 1963  
Maximum Barometer   30.20   30.03   30.03   +00.17   30.55   in 2003   29.52   in 1957  
Minimum Barometer   30.07   29.82   29.73   +00.34   30.25   in 1993   29.04   in 1982  
Average Barometer   30.14   29.93   29.88   +00.26   30.29   in 1993   29.34   in 1982  
Average Wind   3.9   6.5   8.3   -4.4   19.1   in 1985   3.4   in 1965  
Direction   SW   ENE   WNW       SSW NNW
High Wind Gust   24   21   27   -3   56   in 1949   14   in 2010  
Direction   NNW   ENE   nnw       SW SE
Maximum Water Temp   45.9   45.9   44.2   +1.7   53.9   in 2010   40.3   in 2018  
Minimum Water Temp   44.4   44.2   41.8   +2.6   50.7   in 2010   38.7   in 2003  
Average Water Temp   45.2   45.1   43.0   +2.1   52.3   in 2010   39.8   in 2003  
Sunrise/ AM Twilight   6:20:05 AM   5:49:44 AM            
Sunset / PM Twilight   7:15:37 PM   7:45:14 PM            
Length Of Day   12:55:32                          
Special Conditions   Dense Fog                              
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