Portsmouth Rhode Island Weather Almanac  
Saturday, June 29, 2024  
Partly Cloudy early then Mostly Cloudy, Continued Cool  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    June 29, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   74   78   78   -4   93   in 1991   61   in 1927  
Minimum Temperature   57   65   63   -6   70   in 2021   49   in 1995  
Average Temperature   66   72   70   -4   81   in 2021   57   in 1919  
 Month Avg Max Temperature   77.0   72.6   73.7   +3.4   79.0   in 1957   66.3   in 1903  
Month Avg Min Temperature   60.4   57.0   57.7   +2.7   61.1   in 2010   52.9   in 1907  
Month Average Temperature   69.0   65.0   65.8   +3.2   69.1   in 2001   60.4   in 1903  
High Heat Index   76   81   78   -2   106   in 2021            
Low Wind Chill                                      
Heating Degree Days   0   0   0   +0   8   in 1919   0   in 2024  
Month Heating DD   5   61   50   -45   159   in 1907   5   in 2024  
Season Heating DD   4952   4783   5509   -557   6620   in 1905   4444   in 1932    
Cooling Degree Days   1   7   5   -4   16   in 2021   0   in 2015    
Month Cooling DD   121   61   75   +46   156   in 1957   8   in 1972    
Year Cooling DD   131   61   87   +44   172   in 1957   8   in 1972    
Maximum Dew Point   71   71   67   +4   78   in 2021   55   in 1958    
Minimum Dew Point   54   63   58   -4   68   in 2008   44   in 1971    
Average  Dew Point   63   67   63   +0   72   in 2021   52   in 1970  
 Month Avg Max Dew Point   66.4   63.2   62.8   +3.7   66.4   in 2024   54.6   in 1965  
Month Avg Min Dew Point   55.6   55.1   53.1   +2.5   57.4   in 2010   44.7   in 1958  
Month Average Dew Point   61.0   59.2   57.9   +3.1   61.8   in 2010   50.0   in 1965  
Precipitation   .00   .00   .11   -.11   1.32   in 1994            
One Hour Rain   .00   .00           .83   in 2019            
Half Hour Rain   .00   .00           .66   in 2019            
Hourly Rain Rate   .00   .00           7.20   in 2019            
Month Precipitation   3.67   3.81   3.42   +.25   9.44   in 1982   .05   in 1949  
Year Precipitation   32.83   24.48   22.59   +10.24   39.12   in 1983   12.69   in 1957  
Snow   0.0   0.0   ######   ######   0.0   in 1900            
Snow Depth   0   0   38897   -38897   44011   in              
Month Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in Many  
Season Snow   12.7   9.1   33.8   -21.1   84.1   in 1996   5.0   in 1998  
    June 29, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   98%   99%   92%   +6%   100%   in 2018   70%   in 1991  
Minimum Humidity   66%   70%   60%   +6%   98%   in 1985   31%   in 1958  
Average Humidity   82%   85%   76%   +6%   99%   in 1985   54%   in 1991  
Maximum Barometer   30.28   30.06   30.02   +00.26   30.28   in 2024   29.53   in 2009  
Minimum Barometer   30.04   29.89   29.83   +00.21   30.16   in 2022   29.34   in 1986  
Average Barometer   30.16   29.98   29.92   +00.24   30.21   in 2003   29.49   in 2009  
Average Wind   8.4   4.0   5.7   +2.7   16.4   in 1957   2.0   in 1996  
Direction   S   SW   SSW       SW         SSE        
High Wind Gust   26   17   21   +5   52   in 1957   11   in 2000  
Direction   S   SSE   SSW       SSW         S        
Maximum Water Temp   67.3   70.3   68.0   -0.7   72.0   in 2021   63.1   in 2020  
Minimum Water Temp   66.0   67.3   64.1   +1.9   68.2   in 2021   58.8   in 2004  
Average Water Temp   66.7   68.8   66.0   +0.6   70.1   in 2021   61.6   in 2020  
Sunrise/ AM Twilight   5:13:46 AM   4:41:00 AM            
Sunset / PM Twilight   8:23:10 PM   8:56:56 PM            
Length Of Day   15:09:24                          
Special Conditions   None                                  
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