Portsmouth Rhode Island Weather Almanac  
Thursday, August 29, 2024  
Cloudy early, Mostly Cloudy Day to Partly Cloudy PM, Much Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    August 29, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   76   75   77   -1   93   in 1953   63   in 2006  
Minimum Temperature   58   62   62   -4   73   in 2018   46   in 1982  
Average Temperature   67   69   70   -3   83   in 1948   57   in 1986  
 Month Avg Max Temperature   79.7   78.1   78.7   +1.0   83.3   in 2022   73.5   in 1964  
Month Avg Min Temperature   63.5   63.7   63.9   -0.3   68.1   in 2018   56.9   in 1964  
Month Average Temperature   71.8   71.1   71.3   +0.6   75.4   in 2022   65.6   in 1964  
High Heat Index   77   77   78   -1   103   in 2018            
Low Wind Chill                             43   in 1982  
Heating Degree Days   0   0   1   -1   8   in 1986   0   in 2024  
Month Heating DD   2   0   2   +0   36   in 1905   0   in 2023  
Season Heating DD   2   0   5   -3   40   in 1914   0   in 2023    
Cooling Degree Days   2   4   6   -4   18   in 1948   0   in 2017    
Month Cooling DD   200   178   199   +1   301   in 2022   43   in 1964    
Year Cooling DD   642   562   527   +115   761   in 2020   241   in 1902    
Maximum Dew Point   63   72   66   -3   78   in 2018   44   in 1965    
Minimum Dew Point   52   61   58   -6   72   in 2018   35   in 1982    
Average  Dew Point   58   67   62   -4   75   in 2018   40   in 1965  
 Month Avg Max Dew Point   70.9   69.0   68.0   +2.8   72.4   in 2021   60.1   in 1964  
Month Avg Min Dew Point   61.0   59.7   59.8   +1.2   65.2   in 2018   49.8   in 1964  
Month Average Dew Point   65.9   64.4   63.9   +2.1   68.8   in 2018   54.9   in 1964  
Precipitation   .00   .22   .11   -.11   3.97   in 1997            
One Hour Rain   .00   .16           2.44   in 1997            
Half Hour Rain   .00   .10           .52   in 2009            
Hourly Rain Rate   .00   .61           3.47   in 2005            
Month Precipitation   2.42   5.31   3.41   -.99   11.69   in 1946   .33   in 1993  
Year Precipitation   40.69   35.56   29.19   +11.50   45.24   in 1998   16.49   in 1957  
Snow   0.0   0.0   0.0   +0.0   0.0   in 1900            
Snow Depth   0   0   0   +0   0   in              
Month Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in Many  
Season Snow                                      
    August 29, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   86%   99%   93%   -7%   100%   in 2017   70%   in 1965  
Minimum Humidity   61%   87%   61%   +0%   91%   in 1987   35%   in 1982  
Average Humidity   74%   93%   77%   -3%   96%   in 1987   54%   in 1982  
Maximum Barometer   30.32   30.07   30.07   +00.25   30.37   in 1941   29.73   in 1962  
Minimum Barometer   30.06   29.91   29.87   +00.19   30.23   in 2000   29.43   in 1990  
Average Barometer   30.19   29.99   29.97   +00.22   30.27   in 2000   29.62   in 2020  
Average Wind   7.3   2.1   6.1   +1.2   17.3   in 1962   1.3   in 1964  
Direction   NNE   ESE   SSW       NNE         S        
High Wind Gust   21   10   22   -1   42   in 1962   10   in 2023  
Direction   NE   ESE   S       NNE         ESE        
Maximum Water Temp   72.0   69.4   70.6   +1.4   74.4   in 2018   64.8   in 2020  
Minimum Water Temp   69.3   68.4   68.4   +0.9   72.5   in 2021   #N/A   in 2003  
Average Water Temp   70.7   68.9   69.5   +1.1   73.8   in 2021   64.3   in 2020  
Sunrise/ AM Twilight   6:08:39 AM   5:06:54 AM            
Sunset / PM Twilight   7:22:11 PM   8:36:30 PM            
Length Of Day   13:13:32                          
Special Conditions   None                                  
Comments                                      
Hour-by-Hour Weather For August 29, 2024
Climate Weather for August 29
Weather History For August 29
Weather Calendar
Back To Weather Stat Page