Portsmouth Rhode Island Weather Almanac  
Monday, July 10, 2023  
Cloudy, Heavy Rain and Fog, Mostly Cloudy PM, Much Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    July 10, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   71   79   80   -9   95   in 1993   66   in 1964  
Minimum Temperature   67   59   64   +3   74   in 1911   52   in 2009  
Average Temperature   69   69   72   -3   84   in 1911   60   in 1963  
 Month Avg Max Temperature   80.8   79.5   79.2   +1.6   86.8   in 1955   70.2   in 1914  
Month Avg Min Temperature   67.5   62.9   63.7   +3.8   70.6   in 2013   55.3   in 1962  
Month Average Temperature   74.4   71.5   71.7   +2.7   76.7   in 1955   63.6   in 1914  
High Heat Index   74   79           101   in 1993            
Low Wind Chill                                      
Heating Degree Days   0   0   0   +0   5   in 1963   0   in 2023  
Month Heating DD   0   0   3   -3   23   in 1914   0   in 2023  
Season Heating DD   0   0   3   -3   23   in 1914   0   in 2023  
Cooling Degree Days   4   4   7   -3   19   in 1911   0   in 2009  
Month Cooling DD   94   65   67   +27   117   in 1955   9   in 1914  
Year Cooling DD   170   160   160   +10   245   in 2010   35   in 1972  
Maximum Dew Point   70   63   68   +2   75   in 2020   52   in 1983  
Minimum Dew Point   67   53   60   +7   71   in 2013   42   in 1983  
Average  Dew Point   69   58   64   +5   73   in 2013   47   in 1983  
 Month Avg Max Dew Point   74.5   67.5   67.7   +6.8   74.5   in 2023   57.4   in 1982  
Month Avg Min Dew Point   66.8   57.0   59.2   +7.6   68.3   in 2013   47.9   in 1962  
Month Average Dew Point   70.7   62.3   63.5   +7.2   71.1   in 2013   52.8   in 1982  
Precipitation   1.03   .00   .10   +.93   1.03   in 2023            
One Hour Rain   .67   .00           .67   in 2023            
Hourly Rain Rate   6.26   .00           6.26   in 2023            
Month Precipitation   2.63   .30   1.06   +1.57   4.73   in 2009   .00   in 2019  
Year Precipitation   27.11   23.20   23.63   +3.48   40.76   in 1998   13.04   in 1957  
Snow                                      
Snow Depth                                      
Month Snow                                      
Season Snow   0.0   0.0   0.0   +0.0   0.0   in 1996   0.0   in 1998  
    July 10, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   96%   92%   +7%   100%   in 2013   63%   in 1986  
Minimum Humidity   97%   42%   55%   +42%   97%   in 2023   28%   in 1991  
Average Humidity   98%   69%   73%   +25%   98%   in 2023   51%   in 1986  
Maximum Barometer   29.83   30.09   29.99   -00.16   30.39   in 1934   29.75   in 1956  
Minimum Barometer   29.74   30.02   29.81   -00.07   30.25   in 2009   29.53   in 1985  
Average Barometer   29.79   30.06   29.90   -00.11   30.29   in 2009   29.71   in 1956  
Average Wind   5.6   5.3   5.9   -0.3   12.1   in 1986   2.7   in 2014  
Direction   SSE   S   SSW       NW SE
High Wind Gust   20   16   22   -2   42   in 1985   12   in 1973  
Direction   SE   NNE   SSW       SSW S
Maximum Water Temp   71.6   69.8   70.1   +1.5   75.3   in 2013   67.1   in 2020  
Minimum Water Temp   70.0   68.4   65.7   +4.3   70.4   in 2010   60.3   in 2003  
Average Water Temp   70.8   69.1   67.9   +2.9   72.1   in 2010   64.1   in 2003  
Sunrise/ AM Twilight   5:20:13 AM   4:48:28 AM            
Sunset / PM Twilight   8:20:20 PM   8:53:07 PM            
Length Of Day   15:00:07                          
Special Conditions   Fog                                  
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