Portsmouth Rhode Island Weather Almanac  
Sunday, July 9, 2023  
Cloudy early, Partly Cloudy Day to Cloudy PM, Light Winds, Cooler and Muggy  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    July 9, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   81   82   80   +1   96   in 1981   68   in 2016  
Minimum Temperature   68   61   64   +4   72   in 1981   52   in 1894  
Average Temperature   75   72   72   +3   84   in 1981   63   in 2009  
 Month Avg Max Temperature   81.9   79.6   79.1   +2.8   87.2   in 1955   70.0   in 1914  
Month Avg Min Temperature   67.6   63.3   63.7   +3.9   70.4   in 2013   54.7   in 1962  
Month Average Temperature   75.0   71.8   71.7   +3.3   76.8   in 1955   63.3   in 1914  
High Heat Index   87   83           105   in 1981            
Low Wind Chill                                      
Heating Degree Days   0   0   0   +0   2   in 2009   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   10   7   7   +3   19   in 1981   0   in 2016  
Month Cooling DD   90   61   60   +30   106   in 1955   8   in 1914  
Year Cooling DD   166   156   153   +13   232   in 2010   32   in 1972  
Maximum Dew Point   75   69   68   +7   77   in 1994   53   in 1963  
Minimum Dew Point   67   58   60   +7   70   in 2010   39   in 1963  
Average  Dew Point   71   64   64   +7   74   in 1994   46   in 1963  
 Month Avg Max Dew Point   75.0   68.0   67.7   +7.3   75.0   in 2023   56.6   in 1982  
Month Avg Min Dew Point   66.8   57.4   59.1   +7.7   68.0   in 2013   47.6   in 1982  
Month Average Dew Point   70.9   62.7   63.4   +7.4   70.9   in 2023   52.1   in 1982  
Precipitation   .00   .00   .10   -.10   1.23   in 1899            
One Hour Rain   .00   .00           .61   in 1962            
Hourly Rain Rate   .00   .00           3.16   in 2021            
Month Precipitation   1.60   .30   .96   +.64   4.73   in 2009   .00   in 2019  
Year Precipitation   26.08   23.20   23.53   +2.55   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 9, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   94%   92%   +7%   100%   in 2005   70%   in 1954  
Minimum Humidity   79%   47%   57%   +22%   84%   in 1964   27%   in 1956  
Average Humidity   89%   71%   74%   +15%   92%   in 1962   53%   in 1991  
Maximum Barometer   29.89   30.05   29.99   -00.10   30.33   in 1949   29.66   in 1962  
Minimum Barometer   29.83   29.95   29.80   +00.03   30.10   in 1972   29.36   in 1986  
Average Barometer   29.86   30.00   29.90   -00.04   30.17   in 1972   29.58   in 1962  
Average Wind   4.4   5.3   5.9   -1.5   10.4   in 1990   2.0   in 1993  
Direction   SSE   SSE   SW       SW SW
High Wind Gust   14   18   20   -6   36   in 1936   12   in 2013  
Direction   S   NW   S       NNE SE
Maximum Water Temp   73.2   69.8   69.9   +3.3   76.0   in 2013   65.3   in 2009  
Minimum Water Temp   71.2   67.8   65.8   +5.4   71.2   in 2023   59.6   in 2003  
Average Water Temp   72.2   68.8   67.8   +4.4   72.2   in 2023   64.2   in 2005  
Sunrise/ AM Twilight   5:19:31 AM   4:47:40 AM            
Sunset / PM Twilight   8:20:46 PM   8:53:40 PM            
Length Of Day   15:01:15                          
Special Conditions   Fog                                  
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