Portsmouth Rhode Island Weather Almanac  
Wednesday, June 28, 2023  
Cloudy, Very Heavy Rain/Thunderstorm early, Breezy, Seasonal Temps  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2023
    June 28, 2023   Record   Record  
Observed Daily Data   2023   2022   Norm   Depart   Highest   Lowest  
Maximum Temperature   74   77   78   -4   90   in 1991   60   in 1938  
Minimum Temperature   66   57   62   +4   71   in 2010   49   in 1995  
Average Temperature   70   67   70   +0   79   in 2001   58   in 1938  
 Month Avg Max Temperature   72.4   74.6   73.5   -1.1   78.9   in 1943   66.3   in 1903  
Month Avg Min Temperature   56.7   57.7   57.5   -0.8   61.0   in 2001   52.6   in 1907  
Month Average Temperature   64.8   66.4   65.6   -0.9   69.1   in 2001   60.3   in 1903  
High Heat Index   76   77           94   in 2021            
Low Wind Chill                                      
Heating Degree Days   0   0   0   +0   7   in 1938   0   in 2023  
Month Heating DD   61   24   50   +11   159   in 1907   5   in 1899  
Season Heating DD   4783   5009   5478   -695   6620   in 1905   4444   in 1932  
Cooling Degree Days   5   2   4   +1   14   in 2001   0   in 2015  
Month Cooling DD   54   62   70   -16   146   in 1957   7   in 1972  
Year Cooling DD   63   85   82   -19   164   in 2001   7   in 1972  
Maximum Dew Point   70   64   67   +3   76   in 2021   52   in 1981  
Minimum Dew Point   65   55   58   +7   70   in 2010   37   in 1980  
Average  Dew Point   68   60   62   +6   73   in 2010   47   in 1980  
 Month Avg Max Dew Point   62.9   62.8   62.6   +0.3   65.9   in 2021   54.1   in 1965  
Month Avg Min Dew Point   54.9   53.5   52.9   +2.0   57.4   in 2010   44.5   in 1958  
Month Average Dew Point   58.9   58.2   57.7   +1.2   61.7   in 2010   49.6   in 1965  
Precipitation   .80   .00   .11   +.69   2.38   in 1938            
One Hour Rain   .62   .00           .62   in 2023            
Hourly Rain Rate   4.47   .00           4.47   in 2023            
Month Precipitation   3.81   3.70   3.31   +.50   8.98   in 1982   .05   in 1949  
Year Precipitation   24.48   22.90   22.35   +2.13   39.12   in 1983   12.67   in 1957  
Snow                                      
Snow Depth                                      
Month Snow                                      
Season Snow   9.1   34.7   33.5   -24.4   84.1   in 1996   5.0   in 1998  
    June 28, 2023     Record Record
Observed Daily Data   2023   2022   Norm   Depart   Highest Lowest
Maximum Humidity   99%   97%   92%   +7%   100%   in 2018   71%   in 2001  
Minimum Humidity   88%   54%   59%   +29%   92%   in 2013   28%   in 1981  
Average Humidity   94%   76%   75%   +18%   96%   in 2005   53%   in 1981  
Maximum Barometer   29.89   30.18   30.03   -00.14   30.34   in 1995   29.66   in 2010  
Minimum Barometer   29.80   29.99   29.83   -00.03   30.18   in 2014   29.38   in 1986  
Average Barometer   29.85   30.09   29.93   -00.08   30.26   in 1962   29.61   in 2009  
Average Wind   8.5   3.3   6.3   +2.2   12.3   in 1984   2.6   in 2008  
Direction   SSE   WNW   SSW       S SSE
High Wind Gust   22   16   22   -0   46   in 1932   12   in 1952  
Direction   S   SW   SW       NW S
Maximum Water Temp   68.4   67.3   67.8   +0.6   75.3   in 2007   63.6   in 2006  
Minimum Water Temp   67.1   65.1   63.7   +3.4   68.4   in 1999   59.2   in 2003  
Average Water Temp   67.8   66.2   65.8   +2.0   71.3   in 2007   61.9   in 2006  
Sunrise/ AM Twilight   5:13:20 AM   4:40:29 AM            
Sunset / PM Twilight   8:23:13 PM   8:57:03 PM            
Length Of Day   15:09:53                          
Special Conditions   Fog, Strong Thunderstorm                        
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