Portsmouth Rhode Island Weather Almanac  
Wednesday, January 4, 2023  
Cloudy early, Foggy Day to Cloudy PM and Rain, Light Winds, Continued Very Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    January 4, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   49   31   40   +9   59   in 2000   9   in 1904  
Minimum Temperature   42   17   26   +16   51   in 1950   -4   in 1981  
Average Temperature   46   24   33   +13   54   in 1950   4   in 1904  
 Month Avg Max Temperature   50.3   42.8   40.0   +10.3   55.3   in 2000   13.8   in 1918  
Month Avg Min Temperature   38.5   30.8   26.3   +12.3   39.0   in 2000   0.8   in 1918  
Month Average Temperature   44.8   37.0   33.3   +11.5   47.3   in 2000   7.5   in 1918  
High Heat Index                                      
Low Wind Chill   39   6   16   +23             -28   in 1981  
Heating Degree Days   19   41   32   -13   61   in 1904   11   in 1950  
Month HDD   81   112   127   -46   230   in 1918   71   in 2000  
Season HDD   1774   1668   1997   -223   2677   in 1918   1443   in 2016  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   49   25   32   +17   57   in 2000   7   in 1981  
Minimum Dew Point   41   4   17   +24   46   in 1950   -24   in 1981  
Average  Dew Point   45   15   25   +20   50   in 2000   -9   in 1981  
 Month Avg Max Dew Point   41.1   31.1   32.8   +8.4   47.5   in 2023   14.3   in 1981  
Month Avg Min Dew Point   34.8   22.8   17.0   +17.8   36.3   in 2000   -10.8   in 1981  
Month Average Dew Point   38.0   27.1   25.0   +13.0   43.3   in 2000   1.8   in 1981  
Precipitation   .29   .00   .12   +.17   1.85   in 1944            
One Hour   .08   .00           .30   in 1982            
Hourly Rate   .23   .00           .71   in 2004            
Month Precipitation   .68   .47   .48   +.20   3.53   in 1919   .00   in 2013  
Year Precipitation   .68   .47   .48   +.20   3.53   in 1919   .00   in 2013  
Snow   0.0   0.0   0.3   -0.3   12.5   in 2018       in    
Snow Depth   0   0           19   in 1948       in    
Month Snow   0.0   T   1.2   -1.2   12.5   in 2018   0.0   in 2023  
Season Snow   1.5   0.8   8.3   -6.8   31.1   in 1905   T   in 2000  
    January 4, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   100%   80%   85%   +15%   100%   in 2023   44%   in 1965  
Minimum Humidity   97%   38%   57%   +40%   97%   in 2023   25%   in 2002  
Average Humidity   99%   59%   71%   +27%   99%   in 2023   37%   in 1965  
Maximum Barometer   29.94   30.39   30.11   -00.17   30.86   in 1983   29.60   in 2017  
Minimum Barometer   29.77   30.13   29.77   -00.00   30.38   in 2008   28.79   in 2018  
Average Barometer   29.86   30.26   29.94   -00.09   30.53   in 1983   29.43   in 2018  
Average Wind   3.8   6.9   8.5   -4.7   19.4   in 1951   1.9   in 1997  
Direction   E   NNW   W       SSW N
High Wind Gust   13   24   27   -14   56   in 1944   10   in 1956  
Direction   WSW   N   WNW       NE SW
Maximum Water Temp   45.5   45.3   42.1   +3.4   48.9   in 2007   36.1   in 2001  
Minimum Water Temp   44.1   43.2   40.2   +3.9   47.7   in 2007   33.2   in 2008  
Average Water Temp   44.8   44.3   41.2   +3.6   48.3   in 2007   35.3   in 2001  
Sunrise/ AM Twilight   7:11:50 AM   6:40:41 AM            
Sunset / PM Twilight   4:28:19 PM   4:59:53 PM            
Length Of Day   9:16:29                          
Special Conditions   Dense Fog                              
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Hour-by-Hour Weather For January 4, 2023            
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