Portsmouth Rhode Island Weather Almanac  
Thursday, December 22, 2022  
Partly Cloudy early, Mostly Cloudy Day to Cloudy, Moderate Rain & Fog PM, Breezy & Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2022
    December 22, 2022   Record   Record  
Observed Daily Data   2022   2021   Norm   Depart   Highest   Lowest  
Maximum Temperature   46   49   42   +4   59   in 2013   17   in 1989  
Minimum Temperature   28   32   29   -1   53   in 2015   4   in 1989  
Average Temperature   37   41   35   +2   56   in 2015   11   in 1989  
 Month Avg Max Temperature   43.9   48.5   44.2   -0.3   53.5   in 2015   31.8   in 1904  
Month Avg Min Temperature   32.4   34.7   31.1   +1.3   41.3   in 2015   15.5   in 1989  
Month Average Temperature   38.4   41.9   37.5   +0.9   47.7   in 2015   24.0   in 1989  
High Heat Index                                      
Low Wind Chill   24   23   17   +7             -16   in 1989  
Heating Degree Days   28   24   30   -2   54   in 1989   9   in 2015  
Month HDD   585   509   602   -17   903   in 1989   380   in 2015  
Season HDD   1406   1303   1592   -186   2176   in 1904   1175   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   46   47   34   +12   57   in 2015   -5   in 1989  
Minimum Dew Point   27   21   19   +8   50   in 2015   -12   in 1989  
Average  Dew Point   37   34   27   +10   54   in 2015   -9   in 1989  
 Month Avg Max Dew Point   37.6   41.9   35.2   +2.3   48.2   in 2015   16.7   in 1989  
Month Avg Min Dew Point   24.7   22.8   20.0   +4.8   35.8   in 2015   -1.0   in 1989  
Month Average Dew Point   31.4   32.5   27.6   +3.8   42.2   in 2015   7.9   in 1989  
Precipitation   .47   .07   .14   +.33   1.49   in 1969            
One Hour   .13   .04           .48   in 1984            
Hourly Rate   .58   .06           1.72   in 2011            
Month Precipitation   4.02   1.04   3.30   +.72   9.27   in 1936   .37   in 1998  
Year Precipitation   41.83   46.62   44.73   -2.90   65.09   in 1983   27.14   in 1965  
Snow   0.0   0.0   0.2   -0.2   3.3   in 1962       in    
Snow Depth   0   0           19   in 2009       in    
Month Snow   1.5   0.2   4.0   -2.5   21.3   in 1981   0.0   in 2015  
Season Snow   1.5   0.2   4.6   -3.1   21.3   in 1981   0.0   in 2015  
    December 22, 2022     Record Record
Observed Daily Data   2022   2021   Norm   Depart   Highest Lowest
Maximum Humidity   98%   96%   85%   +13%   100%   in 2018   52%   in 1989  
Minimum Humidity   78%   58%   56%   +22%   93%   in 1990   20%   in 1988  
Average Humidity   88%   77%   70%   +18%   97%   in 1990   42%   in 1971  
Maximum Barometer   30.50   29.86   30.18   +00.32   30.72   in 1971   29.68   in 2012  
Minimum Barometer   29.93   29.43   29.81   +00.12   30.47   in 2007   28.97   in 1969  
Average Barometer   30.22   29.65   29.99   +00.22   30.56   in 1980   29.38   in 1969  
Average Wind   8.8   8.3   8.5   +0.3   16.7   in 1952   1.8   in 1994  
Direction   E   NW   WNW       N SSW
High Wind Gust   36   46   27   +9   49   in 2012   10   in 1994  
Direction   ESE   WNW   WNW       NNW SSW
Maximum Water Temp   46.2   48.0   44.6   +1.6   50.7   in 2011   40.4   in 2019  
Minimum Water Temp   43.9   45.1   42.2   +1.7   49.5   in 2011   37.3   in 2019  
Average Water Temp   45.1   46.6   43.4   +1.6   50.1   in 2011   38.9   in 2019  
Sunrise/ AM Twilight   7:08:45 AM   6:39:06 AM            
Sunset / PM Twilight   4:18:40 PM   4:48:34 PM            
Length Of Day   9:09:55                          
Special Conditions   Fog                                  
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Hour-by-Hour Weather For December 22, 2022            
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