Portsmouth Rhode Island Weather Almanac  
Saturday, January 13, 2024  
Cloudy, Heavy Rain & Fog early, Mostly Cloudy day to P Cloudy PM, Very Windy and Very Warm  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    January 13, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   55   56   38   +17   58   in 1932   8   in 1914  
Minimum Temperature   36   41   24   +12   47   in 1932   -5   in 1912  
Average Temperature   46   49   31   +15   53   in 1932   4   in 1912  
 Month Avg Max Temperature   42.7   45.8   39.2   +3.5   49.2   in 2007   23.6   in 1981  
Month Avg Min Temperature   29.1   33.8   25.4   +3.7   37.2   in 2007   6.6   in 1981  
Month Average Temperature   36.0   40.1   32.4   +3.6   43.3   in 2007   15.4   in 1981  
High Heat Index                   #N/A   in #N/A            
Low Wind Chill   28   34   12   +16             -19   in 1912  
Heating Degree Days   19   16   34   -15   61   in 1912   12   in 1932  
Month Heating DD   377   324   424   -47   645   in 1981   282   in 2007  
Season Heating DD   2054   2017   2294   -240   3016   in 1918   1714   in 2016  
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   54   55   31   +23   55   in 2023   -8   in 1981  
Minimum Dew Point   23   37   14   +9   43   in 2013   -13   in 1981  
Average  Dew Point   39   46   23   +16   46   in 2023   -11   in 1981  
 Month Avg Max Dew Point   35.5   41.6   31.8   +3.6   43.6   in 2007   9.2   in 1981  
Month Avg Min Dew Point   22.6   29.4   15.8   +6.8   29.4   in 2023   -10.3   in 1981  
Month Average Dew Point   29.3   35.5   23.9   +5.4   35.5   in 2023   -0.6   in 1981  
Precipitation   1.04   .94   .12   +.92   1.62   in 1948            
One Hour Rain   .25   .30           .30   in 2023            
Half Hour Rain   .13   .18           .18   in 2023            
Hourly Rain Rate   1.04   2.09           2.40   in 2018            
Month Precipitation   4.29   2.49   1.58   +2.71   5.05   in 1979   .09   in 1984  
Year Precipitation   4.29   2.49   1.58   +2.71   5.05   in 1979   .09   in 1984  
Snow   0.0   0.0   0.3   -0.3   6.0   in 1964            
Snow Depth   0   0   1   -1   18   in 1904            
Month Snow   3.4   T   3.9   -0.5   25.8   in 1996   0.0   in 2007  
Season Snow   3.5   1.5   11.0   -7.5   41.6   in 1996   0.2   in 1914  
    January 13, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   99%   99%   87%   +12%   100%   in 2013   43%   in 1981  
Minimum Humidity   54%   88%   56%   -2%   100%   in 2005   24%   in 1981  
Average Humidity   77%   94%   71%   +5%   100%   in 2005   34%   in 1981  
Maximum Barometer   29.91   29.78   30.16   -00.25   30.84   in 1968   29.49   in 1956  
Minimum Barometer   29.16   29.54   29.82   -00.66   30.56   in 1984   29.15   in 2002  
Average Barometer   29.54   29.66   29.99   -00.46   30.66   in 1984   29.44   in 2002  
Average Wind   17.0   13.0   8.3   +8.7   17.0   in 2024   2.6   in 1966  
Direction   W   S   WNW       W W
High Wind Gust   54   36   27   +27   54   in 2024   12   in 1968  
Direction   SE   SSW   NW       SE N
Maximum Water Temp   46.2   46.4   42.0   +4.2   48.7   in 2012   37.4   in 2010  
Minimum Water Temp   44.8   43.9   39.7   +5.1   46.3   in 2012   34.5   in 2019  
Average Water Temp   45.5   45.2   40.8   +4.7   47.5   in 2012   36.1   in 2019  
Sunrise/ AM Twilight   7:10:14 AM   6:39:22 AM            
Sunset / PM Twilight   4:37:34 PM   5:08:38 PM            
Length Of Day   16:37:18                          
Special Conditions   Dense Fog                              
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