Portsmouth Rhode Island Weather Almanac
Saturday, September 5, 2020
Clear, Low Humidty and Warm
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    September 5, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   79   73   75   +4   91   in 1961   59   in 1994  
Minimum Temperature   60   57   60   +0   72   in 1953   47   in 1906  
Average Temperature   70   65   67   +3   80   in 1961   56   in 1994  
Precipitation   .00   .00   .13   -.13   2.84   in 1991            
One Hour   .00   .00           .67   in 1991            
Snow   #N/A   0.0   0.0   #N/A   0.0   in              
Snow Depth   #N/A   0           0   in            
HDD   0   0   1   -1   9   in 1994   0   in 2020  
CDD   5   0   4   +1   15   in 1961   0   in 2019  
Maximum Dew Point   58   66   63   -5   74   in 2008   50   in 1965  
Minimum Dew Point   46   50   54   -8   69   in 1953   35   in 2000  
Average  Dew Point   52   58   58   -6   71   in 2008   43   in 2000  
Maximum Humidity   79%   91%   92%   -13%   100%   in 2003   78%   in 1998  
Minimum Humidity   33%   57%   57%   -24%   92%   in 1991   32%   in 2007  
Average Humidity   56%   74%   74%   -18%   96%   in 1991   56%   in 2020  
Maximum Barometer   30.18   30.09   30.11   +00.07   30.57   in 1989   29.66   in 1988  
Minimum Barometer   30.00   29.97   29.91   +00.09   30.28   in 2004   29.15   in 1988  
Average Barometer   30.09   30.03   30.01   +00.08   30.39   in 1989   29.41   in 1988  
Average Wind   6.0   6.8   5.8   +0.2   13.5   in 2016   1.6   in 2006  
Direction   NNW   NNE   SSW       NNE         SSW        
High Wind Gust   21   22   20   +1   41   in 2016   11   in 1952  
Direction   SW   NNE   SW       NNE         SW        
High Heat Index   77   73   77   +0   102   in 1961            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   70.9   70.5   70.3   +0.6   73.8   in 2018   66.9   in 1997  
Minimum Water Temp   68.5   68.6   67.7   +0.8   71.5   in 2018   64.7   in 2017  
Average Water Temp   69.7   69.6   69.0   +0.7   72.7   in 2018   65.9   in 2017  
Sunrise/ AM Twilight   6:16:50 AM   5:48:45 AM            
Sunset / PM Twilight   7:10:08 PM   7:38:13 PM            
Length Of Day   12:53:18                          
Special Conditions   None                                  
Comments      
    September 5, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   79.2   76.8   75.4   +3.8   86.6   in 1898   66.6   in 1994  
Avg Minimum Temperature   63.8   59.8   60.4   +3.4   70.6   in 1959   51.4   in 1893  
Average Temperature   71.5   68.3   67.9   +3.6   78.5   in 1898   60.5   in 1994  
Total Precipitation   .39   .00   .65   -.26   4.15   in 1905   .00   in 2019  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   0   5   -5   25   in 1994   0   in 2020  
Total CDD   34   17   20   +14   69   in 1898   0   in 1986  
Avg Maximum Dew Point   67.8   67.2   63.4   +4.4   73.4   in 1973   54.4   in 1987  
Avg Minimum Dew Point   56.0   56.4   54.4   +1.6   67.6   in 1959   44.4   in 1967  
Average  Dew Point   61.9   61.8   58.9   +3.0   70.3   in 1973   49.6   in 1987  
    September 5, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   24.42   37.83   32.27   -7.85   45.30   in 1998   16.55   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   0   14   -14   25   in 1994   0   in 2020  
Total CDD (since Jan 1)   800   675   518   +282   800   in 2020   272   in 1902  
                             
Hour-by-Hour Weather For September 5, 2020  
Climate Weather for September 5  
Weather History For September 5  
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