Portsmouth Rhode Island Weather Almanac  
Monday, December 25, 2023  
Cloudy Morning then Partly Cloudy, Very Light Winds, Warmer  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    December 25, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   55   27   41   +14   65   in 2015   12   in 1983  
Minimum Temperature   40   13   28   +12   54   in 2015   -4   in 1980  
Average Temperature   48   20   35   +13   60   in 2015   8   in 1983  
 Month Avg Max Temperature   47.2   42.6   43.8   +3.4   54.9   in 2015   30.9   in 1989  
Month Avg Min Temperature   34.3   30.0   30.7   +3.6   42.5   in 2015   14.2   in 1989  
Month Average Temperature   41.0   36.5   37.2   +3.8   49.0   in 2015   22.8   in 1989  
High Heat Index                   #N/A   in #N/A            
Low Wind Chill   39   -3   15   +24             -31   in 1980  
Heating Degree Days   17   45   30   -13   57   in 1983   5   in 2015  
Month Heating DD   600   712   692   -92   1056   in 1989   399   in 2015  
Season Heating DD   1541   1533   1682   -141   2282   in 1904   1194   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   47   13   34   +13   59   in 2014   -6   in 1983  
Minimum Dew Point   38   3   18   +20   50   in 2015   -28   in 1980  
Average  Dew Point   43   8   26   +17   54   in 2015   -11   in 1983  
 Month Avg Max Dew Point   39.9   36.1   34.8   +5.1   49.8   in 2015   15.3   in 1989  
Month Avg Min Dew Point   28.1   22.0   19.4   +8.7   37.5   in 2015   -1.4   in 1989  
Month Average Dew Point   34.2   29.3   27.1   +7.1   43.8   in 2015   7.0   in 1989  
Precipitation   .00   .00   .14   -.14   1.83   in 2020            
One Hour Rain   .00   .00           .48   in 2020            
Half Hour Rain   .00   .00           .35   in 2020            
Hourly Rain Rate   .00   .00           3.49   in 2020            
Month Precipitation   4.63   4.66   3.72   +.91   9.27   in 1936   .45   in 1943  
Year Precipitation   53.68   42.47   45.15   +8.53   65.27   in 1983   27.52   in 1965  
Snow   0.0   0.0   0.2   -0.2   3.6   in 1909            
Snow Depth   0   0   1   -1   10   in 2009            
Month Snow   0.1   1.5   4.7   -4.6   21.3   in 1981   0.0   in 2015  
Season Snow   0.1   1.5   5.3   +5.3   21.3   in 1898   0.0   in 2015  
    December 25, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   98%   66%   86%   +12%   100%   in 2015   48%   in 1983  
Minimum Humidity   70%   47%   54%   +16%   88%   in 1982   19%   in 1968  
Average Humidity   84%   57%   70%   +14%   94%   in 1982   39%   in 1968  
Maximum Barometer   30.47   29.97   30.15   +00.32   30.97   in 1949   29.48   in 1966  
Minimum Barometer   30.36   29.80   29.78   +00.58   30.68   in 1949   28.74   in 1978  
Average Barometer   30.42   29.89   29.97   +00.45   30.83   in 1949   29.20   in 1978  
Average Wind   2.2   10.5   8.3   -6.1   21.0   in 1966   1.4   in 2015  
Direction   E   W   WNW       W SE
High Wind Gust   9   32   27   -18   52   in 1966   9   in 2023  
Direction   NW   WSW   NW       W NW
Maximum Water Temp   47.3   41.5   44.6   +2.7   51.1   in 2015   40.2   in 2019  
Minimum Water Temp   46.0   37.9   42.2   +3.8   50.2   in 2015   34.5   in 2000  
Average Water Temp   46.7   39.7   43.4   +3.2   50.7   in 2015   37.6   in 2000  
Sunrise/ AM Twilight   7:09:55 AM   6:40:23 AM            
Sunset / PM Twilight   4:20:16 PM   4:50:20 PM            
Length Of Day   9:10:21                          
Special Conditions   Fog                                  
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