Portsmouth Rhode Island Weather Almanac
Sunday, August 30, 2020
Clear, Breezy, Seasonal Temperature and Less Humid
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    August 30, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   81   81   77   +4   94   in 1973   62   in 1903  
Minimum Temperature   57   58   61   -4   71   in 2018   46   in 1986  
Average Temperature   69   70   69   +0   82   in 1973   58   in 1986  
Precipitation   .00   .00   .13   -.13   3.72   in 1985            
One Hour   .00   .00           1.01   in 1985            
Snow   0.0   0.0   0.0   +0.0   0.0   in              
Snow Depth   0   0           0   in            
HDD   0   0   1   -1   7   in 1986   0   in 2020  
CDD   4   5   4   +0   17   in 1973   0   in 2017  
Maximum Dew Point   70   66   64   +6   75   in 2018   39   in 1965  
Minimum Dew Point   50   54   55   -5   71   in 2004   31   in 1965  
Average  Dew Point   60   60   60   +0   73   in 2004   35   in 1965  
Maximum Humidity   96%   93%   92%   +4%   100%   in 2017   59%   in 1953  
Minimum Humidity   42%   55%   60%   -18%   93%   in 2005   29%   in 1995  
Average Humidity   69%   74%   76%   -7%   96%   in 2005   45%   in 1953  
Maximum Barometer   29.94   30.07   30.08   -00.14   30.55   in 1986   29.85   in 1989  
Minimum Barometer   29.43   29.96   29.89   -00.46   30.17   in 2000   29.43   in 2020  
Average Barometer   29.69   30.02   29.98   -00.30   30.30   in 1986   29.68   in 1989  
Average Wind   7.9   5.3   5.3   +2.6   11.1   in 1965   1.1   in 2008  
Direction   NW   SSW   SSW       W         SSW        
High Wind Gust   28   23   20   +8   35   in 1965   10   in 2008  
Direction   W   SSW   SW       WNW         S        
High Heat Index   80   81   79   +1   103   in 1973            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   65.1   71.0   70.3   -5.2   74.7   in 2018   65.1   in 2020  
Minimum Water Temp   63.0   68.8   68.0   -5.0   72.9   in 2018   63.0   in 2020  
Average Water Temp   64.1   69.9   69.1   -5.1   73.6   in 2018   64.1   in 2020  
Sunrise/ AM Twilight   6:10:15 AM   5:41:48 AM            
Sunset / PM Twilight   7:20:59 PM   7:49:26 PM            
Length Of Day   13:10:44                          
Special Conditions   None                                  
Comments      
    August 30, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   82.9   80.6   78.3   +4.6   82.9   in 2020   73.4   in 1903  
Avg Minimum Temperature   66.7   64.0   63.5   +3.3   68.2   in 2018   57.3   in 1964  
Average Temperature   75.0   72.6   70.9   +4.1   75.5   in 2018   65.9   in 1964  
Total Precipitation   1.65   2.60   3.68   -2.03   11.77   in 1946   .33   in 1993  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   3   5   -5   36   in 1905   0   in 2020  
Total CDD   301   231   190   +111   316   in 2018   54   in 1964  
Avg Maximum Dew Point   70.8   68.4   66.6   +4.2   72.4   in 2018   60.4   in 1964  
Avg Minimum Dew Point   61.8   59.0   58.5   +3.3   65.2   in 2018   50.4   in 1964  
Average  Dew Point   66.3   63.7   62.6   +3.8   68.8   in 2018   55.4   in 1964  
    August 30, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   24.03   37.83   31.49   -7.46   45.24   in 1998   16.54   in 1957  
Total Snow (since Jul 1 20)   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD (since Jul 1 20)   0   3   8   -8   36   in 1905   0   in 2020  
Total CDD (since Jan 1)   765   651   494   +271   765   in 2020   244   in 1902  
                             
Hour-by-Hour Weather For August 30, 2020  
Climate Weather for August 30  
Weather History For August 30  
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