Portsmouth Rhode Island Weather Almanac  
Sunday, December 11, 2022  
Cloudy, Light Snow and Fog PM, Windy and Cold  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2022
    December 11, 2022   Record   Record  
Observed Daily Data   2022   2021   Norm   Depart   Highest   Lowest  
Maximum Temperature   34   60   44   -10   65   in 1971   19   in 1977  
Minimum Temperature   29   37   31   -2   47   in 2015   8   in 1977  
Average Temperature   32   49   38   -6   53   in 2015   14   in 1977  
 Month Avg Max Temperature   47.4   48.4   45.5   +1.9   55.0   in 1953   30.5   in 1904  
Month Avg Min Temperature   35.5   34.3   32.5   +3.0   41.4   in 1998   16.0   in 1989  
Month Average Temperature   41.6   41.5   38.9   +2.7   48.2   in 1998   25.5   in 1904  
High Heat Index                                      
Low Wind Chill   19   36   20   -1             -13   in 1977  
Heating Degree Days   33   16   27   +6   51   in 1977   12   in 2015  
Month HDD   257   258   287   -30   434   in 1904   185   in 1998  
Season HDD   1078   1052   1277   -199   1746   in 1904   996   in 2015  
Cooling Degree Days   0   0   #REF!   #REF!   0   in 2022   0   in    
Month CDD                                 in    
Year CDD   777   795   609   +168   871   in 2020   290   in 1902  
Maximum Dew Point   32   59   37   -5   59   in 2021   -4   in 1977  
Minimum Dew Point   25   36   22   +3   47   in 2015   -15   in 1980  
Average  Dew Point   29   48   30   -1   52   in 2015   -9   in 1977  
 Month Avg Max Dew Point   42.2   41.5   37.0   +5.2   47.4   in 2001   19.1   in 1989  
Month Avg Min Dew Point   27.0   24.3   22.2   +4.8   36.5   in 2015   -1.8   in 1989  
Month Average Dew Point   34.8   33.2   29.6   +5.2   42.0   in 2015   8.6   in 1989  
Precipitation   .11   .23   .15   -.04   2.79   in 1992            
One Hour   .00   .06           .41   in 2008            
Hourly Rate   .00   .42           1.37   in 2008            
Month Precipitation   1.94   .64   1.66   +.28   5.89   in 1936   .00   in 1946  
Year Precipitation   39.75   46.22   43.09   -3.34   61.88   in 1983   26.29   in 1965  
Snow   1.4   0.0   0.2   +1.2   3.8   in 2019       in    
Snow Depth   0   0           10   in 1981       in    
Month Snow   1.4   0.2   1.8   -0.4   17.0   in 1981   0.0   in 2015  
Season Snow   1.4   0.2   2.4   -1.0   19.5   in 1898   0.0   in 2015  
    December 11, 2022     Record Record
Observed Daily Data   2022   2021   Norm   Depart   Highest Lowest
Maximum Humidity   99%   100%   87%   +12%   100%   in 2021   45%   in 1990  
Minimum Humidity   82%   91%   57%   +25%   92%   in 2008   20%   in 1980  
Average Humidity   91%   96%   72%   +19%   96%   in 2021   35%   in 1990  
Maximum Barometer   30.39   30.14   30.16   +00.23   30.78   in 1983   29.42   in 2004  
Minimum Barometer   30.05   29.54   29.83   +00.22   30.46   in 2011   29.18   in 1969  
Average Barometer   30.22   29.84   29.99   +00.23   30.61   in 1983   29.35   in 1957  
Average Wind   10.6   10.6   8.3   +2.3   21.9   in 1952   2.1   in 1996  
Direction   N   SSW   N       SE ENE
High Wind Gust   22   33   26   -4   64   in 1943   13   in 2006  
Direction   N   S   N       NW W
Maximum Water Temp   47.7   50.4   47.1   +0.6   51.2   in 2011   42.6   in 2019  
Minimum Water Temp   45.7   48.2   44.6   +1.1   50.4   in 2015   39.1   in 2002  
Average Water Temp   46.7   49.3   45.8   +0.9   50.6   in 2015   41.2   in 2010  
Sunrise/ AM Twilight   7:01:33 AM   6:32:08 AM            
Sunset / PM Twilight   4:15:03 PM   4:44:41 PM            
Length Of Day   9:13:30                          
Special Conditions   Fog                                  
Comments   First measurable snow of season;  Abnormally Dry  
Hour-by-Hour Weather For December 11, 2022            
Climate Weather for December 11            
Weather History For December 11            
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