Portsmouth Rhode Island Weather Almanac
Wednesday, September 2, 2020
Cloudy, Afternoon Rain, Dense Fog and Humid PM, Light Winds, Seasonal Temperatures
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    September 2, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   71   75   76   -5   93   in 1953   63   in 2003  
Minimum Temperature   63   58   61   +2   72   in 1959   46   in 1991  
Average Temperature   67   67   68   -1   81   in 1953   57   in 2017  
Precipitation   .31   .00   .13   +.18   2.50   in 2002            
One Hour   .10   .00           1.21   in 2000            
Snow   #N/A   0.0   0.0   #N/A   0.0   in              
Snow Depth   #N/A   0           0   in            
HDD   0   0   1   -1   8   in 2017   0   in 2020  
CDD   2   2   4   -2   16   in 1953   0   in 2017  
Maximum Dew Point   71   69   64   +7   77   in 2014   47   in 1970  
Minimum Dew Point   59   57   55   +4   71   in 1959   35   in 1991  
Average  Dew Point   65   63   59   +6   74   in 2014   43   in 1967  
Maximum Humidity   99%   95%   92%   +7%   100%   in 2014   75%   in 1984  
Minimum Humidity   84%   72%   58%   +26%   93%   in 1976   30%   in 1960  
Average Humidity   92%   84%   75%   +16%   97%   in 1976   55%   in 1970  
Maximum Barometer   30.13   30.28   30.11   +00.02   30.55   in 1991   29.74   in 1952  
Minimum Barometer   29.83   29.96   29.91   -00.08   30.23   in 2009   29.59   in 1966  
Average Barometer   29.98   30.12   30.01   -00.03   30.37   in 1991   29.67   in 1952  
Average Wind   3.5   6.8   6.2   -2.7   16.1   in 1996   1.6   in 1955  
Direction   SSE   SE   SW       N         NE        
High Wind Gust   18   19   21   -3   46   in 1996   10   in 1955  
Direction   SW   S   SW       N         NE        
High Heat Index   74   77   77   -3   97   in 1953            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   68.7   70.2   70.7   -2.0   76.6   in 2002   65.5   in 2003  
Minimum Water Temp   67.1   68.5   68.1   -1.0   74.1   in 2010   64.9   in 2003  
Average Water Temp   67.9   69.4   69.4   -1.5   75.2   in 2010   65.2   in 2003  
Sunrise/ AM Twilight   6:13:48 AM   5:45:34 AM            
Sunset / PM Twilight   7:15:11 PM   7:43:25 PM            
Length Of Day   13:01:23                          
Special Conditions   Dense Fog                              
Comments      
    September 2, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   74.5   76.0   76.0   -1.5   90.5   in 1953   64.5   in 1912  
Avg Minimum Temperature   61.0   57.5   61.0   +0.0   72.5   in 1959   48.0   in 1991  
Average Temperature   67.8   66.8   68.5   -0.8   80.0   in 1898   58.0   in 1991  
Total Precipitation   .31   .00   .26   +.05   2.80   in 1982   .00   in 2019  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   0   2   -2   14   in 1912   0   in 2020  
Total CDD   6   4   8   -2   31   in 1898   0   in 2017  
Avg Maximum Dew Point   68.0   65.0   63.9   +4.2   76.0   in 2014   46.0   in 1970  
Avg Minimum Dew Point   58.0   55.0   54.8   +3.2   71.5   in 1959   34.5   in 1991  
Average  Dew Point   63.0   60.0   59.3   +3.7   73.0   in 2014   42.0   in 1991  
    September 2, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   24.34   37.83   31.88   -7.54   45.30   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   0   11   -11   14   in 1912   0   in 2020  
Total CDD (since Jan 1)   772   662   506   +266   772   in 2020   266   in 1902  
                             
Hour-by-Hour Weather For September 2, 2020  
Climate Weather for September 2  
Weather History For September 2  
Weather Calendar  
Back To Weather Stat Page  
Home