Portsmouth Rhode Island Weather Almanac  
Sunday, January 8, 2023  
Clear to Mostly Cloudy PM and Colder  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    January 8, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   36   28   39   -3   57   in 1930   9   in 1968  
Minimum Temperature   26   16   25   +1   46   in 1930   2   in 2015  
Average Temperature   31   22   32   -1   52   in 1930   6   in 1968  
 Month Avg Max Temperature   45.8   40.9   39.6   +6.1   52.8   in 2007   22.4   in 1918  
Month Avg Min Temperature   35.3   27.8   25.9   +9.4   40.3   in 2007   6.9   in 1904  
Month Average Temperature   40.8   34.5   32.9   +7.9   46.6   in 2007   15.1   in 1904  
High Heat Index                                      
Low Wind Chill   17   1   10   +7             -21   in 1968  
Heating Degree Days   34   43   33   +1   59   in 1968   13   in 1930  
Month HDD   194   244   257   -63   399   in 1904   147   in 2007  
Season HDD   1887   1800   2127   -240   2833   in 1918   1580   in 2016  
Cooling Degree Days   0   #N/A   #REF!   #REF!   0   in 2023   0   in    
Month CDD                                 in    
Year CDD                                      
Maximum Dew Point   30   13   32   -2   55   in 2007   -11   in 1968  
Minimum Dew Point   18   6   16   +2   41   in 2008   -20   in 1968  
Average  Dew Point   24   10   24   +0   45   in 1998   -16   in 1968  
 Month Avg Max Dew Point   42.6   36.5   32.4   +10.3   49.0   in 2007   14.6   in 2018  
Month Avg Min Dew Point   32.0   19.3   16.5   +15.5   32.0   in 2023   -9.3   in 1981  
Month Average Dew Point   37.4   23.7   24.5   +12.9   40.0   in 2007   2.7   in 1981  
Precipitation   .00   .00   .13   -.13   1.73   in 1979            
One Hour   .00   .00           .26   in 2007            
Hourly Rate   .00   .00           1.44   in 2007            
Month Precipitation   .82   1.31   .98   -.16   4.52   in 1979   .00   in 1901  
Year Precipitation   .82   1.31   .98   -.16   4.52   in 1979   .00   in 1901  
Snow   0.0   0.0   0.3   -0.3   13.5   in 1996       in    
Snow Depth   0   5           16   in 2017       in    
Month Snow   0.0   4.5   2.4   -2.4   24.8   in 1996   0.0   in 2023  
Season Snow   1.5   5.3   9.5   -8.0   40.6   in 1996   T   in 2000  
    January 8, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   86%   73%   82%   +4%   100%   in 2019   38%   in 1968  
Minimum Humidity   50%   42%   52%   -2%   98%   in 1998   24%   in 1950  
Average Humidity   68%   58%   67%   +1%   99%   in 1998   34%   in 1968  
Maximum Barometer   30.31   30.60   30.11   +00.20   30.95   in 1991   29.45   in 2011  
Minimum Barometer   30.12   30.07   29.76   +00.36   30.43   in 1991   28.77   in 1958  
Average Barometer   30.22   30.34   29.93   +00.28   30.69   in 1991   29.23   in 1958  
Average Wind   5.8   8.7   9.4   -3.6   17.8   in 1996   2.9   in 2006  
Direction   NW   NW   WNW       N ESE
High Wind Gust   23   32   29   -6   50   in 1958   13   in 2001  
Direction   NNW   NW   WNW       NNW N
Maximum Water Temp   44.8   43.9   41.5   +3.3   50.5   in 2007   31.8   in 2018  
Minimum Water Temp   41.9   40.1   39.1   +2.8   49.3   in 2007   29.1   in 2018  
Average Water Temp   43.4   42.0   40.1   +3.2   49.9   in 2007   30.5   in 2018  
Sunrise/ AM Twilight   7:11:28 AM   6:40:28 AM            
Sunset / PM Twilight   4:32:13 PM   5:03:35 PM            
Length Of Day   9:20:45                          
Special Conditions   None                              
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