Portsmouth Rhode Island Weather Almanac  
Saturday, July 8, 2023  
Mostly Cloudy/Fog early, Partly Cloudy Day to Mostly Cloudy PM, Light Winds, Warm and Very Muggy  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    July 8, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   84   78   80   +4   93   in 1937   62   in 2005  
Minimum Temperature   70   60   64   +6   72   in 1986   52   in 1980  
Average Temperature   77   69   72   +5   82   in 1937   60   in 2005  
 Month Avg Max Temperature   82.0   79.3   79.0   +3.0   87.5   in 1955   69.4   in 1914  
Month Avg Min Temperature   67.5   63.6   63.6   +3.9   70.8   in 2013   54.3   in 1962  
Month Average Temperature   75.0   71.8   71.6   +3.4   77.3   in 1999   62.8   in 1914  
High Heat Index   92   78           105   in 1993            
Low Wind Chill                                      
Heating Degree Days   0   0   0   +0   5   in 2005   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   12   4   6   +6   17   in 1937   0   in 2005  
Month Cooling DD   80   54   53   +27   98   in 1999   5   in 1914  
Year Cooling DD   156   149   146   +10   228   in 1957   31   in 1972  
Maximum Dew Point   76   66   68   +8   77   in 1994   53   in 2000  
Minimum Dew Point   70   54   60   +10   70   in 2023   37   in 1969  
Average  Dew Point   73   60   64   +9   73   in 2023   45   in 1969  
 Month Avg Max Dew Point   75.0   67.9   67.6   +7.4   75.0   in 2023   55.0   in 1982  
Month Avg Min Dew Point   66.8   57.4   59.0   +7.8   68.1   in 2013   46.6   in 1962  
Month Average Dew Point   70.9   62.6   63.4   +7.5   71.0   in 2013   51.0   in 1982  
Precipitation   .00   .00   .10   -.10   1.33   in 2009            
One Hour Rain   .00   .00           1.09   in 2009            
Hourly Rain Rate   .00   .00           4.24   in 2009            
Month Precipitation   1.60   .30   .86   +.74   4.73   in 2009   .00   in 2019  
Year Precipitation   26.08   23.20   23.43   +2.65   40.76   in 1998   12.92   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 8, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   98%   91%   +8%   100%   in 2016   59%   in 1951  
Minimum Humidity   76%   45%   58%   +18%   91%   in 2005   28%   in 1969  
Average Humidity   88%   72%   74%   +13%   95%   in 2005   50%   in 1959  
Maximum Barometer   29.88   30.02   30.01   -00.13   30.36   in 2018   29.77   in 1963  
Minimum Barometer   29.83   29.95   29.84   -00.01   30.27   in 2018   29.47   in 1991  
Average Barometer   29.86   29.99   29.93   -00.07   30.32   in 2018   29.65   in 1991  
Average Wind   4.1   5.1   6.0   -1.9   11.1   in 1986   1.8   in 1998  
Direction   SSE   SSW   SSW       WNW W
High Wind Gust   14   20   21   -7   32   in 1986   9   in 1998  
Direction   SSW   SSW   SSW       WNW WNW
Maximum Water Temp   73.4   70.3   70.1   +3.3   77.7   in 2013   64.0   in 2005  
Minimum Water Temp   69.4   67.6   65.7   +3.7   70.9   in 1999   59.9   in 2003  
Average Water Temp   71.4   69.0   67.9   +3.5   73.8   in 2013   62.9   in 2005  
Sunrise/ AM Twilight   5:18:50 AM   4:46:53 AM            
Sunset / PM Twilight   8:21:10 PM   8:54:09 PM            
Length Of Day   15:02:20                          
Special Conditions   Dense Fog                              
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