Portsmouth Rhode Island Weather Almanac  
Friday, August 30, 2024  
Partly Cloudy and Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2024
    August 30, 2024   Record   Record  
Observed Daily Data   2024   2023   Norm   Depart   Highest   Lowest  
Maximum Temperature   75   78   77   -2   94   in 1973   62   in 1903  
Minimum Temperature   55   67   62   -7   72   in 2022   46   in 1986  
Average Temperature   65   73   70   -5   82   in 1973   58   in 1986  
 Month Avg Max Temperature   79.6   78.1   78.6   +0.9   83.3   in 2022   73.4   in 1903  
Month Avg Min Temperature   63.2   63.8   63.8   -0.6   68.2   in 2018   57.3   in 1964  
Month Average Temperature   71.6   71.2   71.2   +0.4   75.5   in 2018   65.9   in 1964  
High Heat Index   75   81   79   -4   103   in 1973            
Low Wind Chill                             43   in 1986  
Heating Degree Days   0   0   1   -1   7   in 1986   0   in 2024  
Month Heating DD   2   0   3   -1   36   in 1905   0   in 2023  
Season Heating DD   2   0   6   -4   40   in 1914   0   in 2023    
Cooling Degree Days   0   8   5   -5   17   in 1973   0   in 2024    
Month Cooling DD   200   186   204   -4   316   in 2018   54   in 1964    
Year Cooling DD   642   570   532   +110   765   in 2020   244   in 1902    
Maximum Dew Point   62   75   66   -4   76   in 2022   39   in 1965    
Minimum Dew Point   52   61   58   -6   71   in 2022   31   in 1965    
Average  Dew Point   57   68   62   -5   74   in 2022   35   in 1965  
 Month Avg Max Dew Point   70.6   69.2   68.0   +2.6   72.5   in 2021   60.4   in 1964  
Month Avg Min Dew Point   60.7   59.8   59.7   +1.0   65.2   in 2018   50.4   in 1964  
Month Average Dew Point   65.7   64.5   63.8   +1.8   68.8   in 2018   55.4   in 1964  
Precipitation   .00   .06   .11   -.11   3.72   in 1985            
One Hour Rain   .00   .05           1.01   in 1985            
Half Hour Rain   .00   .05           .37   in 2005            
Hourly Rain Rate   .00   .95           3.74   in 2005            
Month Precipitation   2.42   5.37   3.52   -1.10   11.77   in 1946   .33   in 1993  
Year Precipitation   40.69   35.62   29.30   +11.39   45.24   in 1998   16.54   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 30, 2024     Record Record
Observed Daily Data   2024   2023   Norm   Depart   Highest Lowest
Maximum Humidity   94%   99%   92%   +2%   100%   in 2017   59%   in 1953  
Minimum Humidity   52%   75%   61%   -9%   93%   in 2005   29%   in 1995  
Average Humidity   73%   87%   77%   -4%   96%   in 2005   45%   in 1953  
Maximum Barometer   30.36   29.91   30.08   +00.28   30.55   in 1986   29.85   in 1989  
Minimum Barometer   30.23   29.61   29.88   +00.35   30.23   in 2024   29.43   in 2020  
Average Barometer   30.30   29.76   29.98   +00.31   30.30   in 2024   29.68   in 1989  
Average Wind   5.2   4.5   5.4   -0.2   11.1   in 1965   1.1   in 2008  
Direction   ESE   SW   SSW       W         SSW        
High Wind Gust   23   22   20   +3   35   in 1965   10   in 2008  
Direction   SE   SW   sw       WNW         S        
Maximum Water Temp   70.0   70.2   70.6   -0.6   76.3   in 2021   65.1   in 2020  
Minimum Water Temp   68.2   68.4   68.3   -0.1   73.4   in 2021   63.0   in 2020  
Average Water Temp   69.1   69.3   69.5   -0.4   74.9   in 2021   64.1   in 2020  
Sunrise/ AM Twilight   6:09:40 AM   5:07:59 AM            
Sunset / PM Twilight   7:20:33 PM   8:35:19 PM            
Length Of Day   13:10:53                          
Special Conditions   None                                  
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