Portsmouth Rhode Island Weather Almanac  
Tuesday, December 26, 2023  
Dense Fog, Continued Very Light Wind, Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    December 26, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   45   32   41   +4   61   in 1982   15   in 1914  
Minimum Temperature   36   18   28   +8   47   in 1964   -3   in 1980  
Average Temperature   41   25   34   +7   52   in 2015   7   in 1968  
 Month Avg Max Temperature   47.1   42.2   43.7   +3.4   55.0   in 2015   30.8   in 1989  
Month Avg Min Temperature   34.4   29.5   30.6   +3.8   42.7   in 2015   14.3   in 1989  
Month Average Temperature   41.0   36.1   37.1   +3.9   49.2   in 2015   22.8   in 1989  
High Heat Index                   #N/A   in #N/A            
Low Wind Chill   33   6   15   +18             -25   in 1968  
Heating Degree Days   24   40   31   -7   58   in 1968   13   in 2015  
Month Heating DD   624   752   723   -99   1097   in 1989   412   in 2015  
Season Heating DD   1565   1573   1713   -148   2324   in 1904   1207   in 2015  
Cooling Degree Days   0   0   0   +0       in     0   in Many  
Month Cooling DD   0   0   0   +0   3   in 2022   0   in Many  
Year Cooling DD   726   784   609   +117   871   in 2020   290   in 1902  
Maximum Dew Point   45   20   34   +11   55   in 1964   -15   in 1968  
Minimum Dew Point   36   11   18   +18   44   in 1964   -24   in 1968  
Average  Dew Point   41   16   26   +15   50   in 1964   -20   in 1968  
 Month Avg Max Dew Point   40.1   35.5   34.6   +5.4   49.8   in 2015   15.3   in 1989  
Month Avg Min Dew Point   28.4   21.6   19.2   +9.2   37.4   in 2015   -1.2   in 1989  
Month Average Dew Point   34.5   28.8   26.9   +7.6   43.8   in 2015   7.1   in 1989  
Precipitation   .00   .00   .14   -.14   2.05   in 1969            
One Hour Rain   .00   .00           .43   in 1969            
Half Hour Rain   .00   .00           .10   in 2006            
Hourly Rain Rate   .00   .00           .38   in 2006            
Month Precipitation   4.63   4.66   3.86   +.77   9.28   in 1936   .47   in 1943  
Year Precipitation   53.68   42.47   45.29   +8.39   65.27   in 1983   27.66   in 1965  
Snow   0.0   0.0   0.3   -0.3   9.1   in 1947            
Snow Depth   0   0   1   -1   7   in 1896            
Month Snow   0.1   1.5   5.0   -4.9   21.3   in 1981   0.0   in 2015  
Season Snow   0.1   1.5   5.6   +5.6   22.3   in 1904   0.0   in 2015  
    December 26, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   100%   76%   84%   +16%   100%   in 2023   35%   in 1968  
Minimum Humidity   98%   47%   55%   +43%   98%   in 2023   23%   in 1968  
Average Humidity   99%   62%   70%   +29%   99%   in 2023   29%   in 1968  
Maximum Barometer   30.36   30.21   30.17   +00.19   30.77   in 2016   29.47   in 2005  
Minimum Barometer   30.21   29.97   29.78   +00.43   30.45   in 2008   28.90   in 2010  
Average Barometer   30.29   30.09   29.98   +00.31   30.54   in 2008   29.29   in 2005  
Average Wind   2.8   7.2   8.8   -6.0   21.4   in 1957   2.7   in 1981  
Direction   NNE   W   NW       SE ESE
High Wind Gust   11   22   28   -17   60   in 1957   11   in 2023  
Direction   N   W   NNW       SE N
Maximum Water Temp   47.5   41.5   44.1   +3.4   50.5   in 2015   37.2   in 2000  
Minimum Water Temp   46.2   38.3   41.7   +4.5   49.6   in 2015   33.1   in 2000  
Average Water Temp   46.9   39.9   42.9   +3.9   50.1   in 2015   35.2   in 2000  
Sunrise/ AM Twilight   7:10:17 AM   6:40:44 AM            
Sunset / PM Twilight   4:20:55 PM   4:50:59 PM            
Length Of Day   9:10:38                          
Special Conditions   Dense Fog                              
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