Portsmouth Rhode Island Weather Almanac
Sunday, October 4, 2020
Clear to Mostly Cloudy PM, Light Winds, Seasonal Temperatures
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    October 4, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   70   63   66   +4   83   in 1941   51   in 1996  
Minimum Temperature   46   45   50   -4   65   in 2007   34   in 1945  
Average Temperature   58   54   58   +0   74   in 1941   44   in 1996  
Precipitation   .00   .12   .12   -.12   1.54   in 1999            
One Hour   .00   .05           .66   in 1999            
Snow   #N/A   0.0   0.0   #N/A   0.0   in              
Snow Depth   #N/A   0           44108   in            
HDD   7   11   7   +0   21   in 1996   0   in 2009  
CDD   0   0   1   -1   9   in 1941   0   in 1900  
Maximum Dew Point   54   55   56   -2   71   in 1986   29   in 1965  
Minimum Dew Point   41   34   45   -4   64   in 2007   19   in 1965  
Average  Dew Point   48   45   50   -2   67   in 2007   24   in 1965  
Maximum Humidity   88%   96%   91%   -3%   100%   in 2007   52%   in 1965  
Minimum Humidity   41%   55%   59%   -18%   97%   in 1985   33%   in 1963  
Average Humidity   65%   76%   75%   -11%   99%   in 1985   46%   in 1965  
Maximum Barometer   30.30   30.32   30.11   +00.19   30.60   in 1996   29.73   in 1987  
Minimum Barometer   30.12   29.87   29.88   +00.24   30.33   in 1972   29.30   in 1986  
Average Barometer   30.21   30.10   29.99   +00.22   30.40   in 1996   29.53   in 1986  
Average Wind   4.5   12.4   7.3   -2.8   14.6   in 1965   1.5   in 2005  
Direction   NNW   N   W       WNW         SSE        
High Wind Gust   14   32   24   -10   56   in 1917   10   in 2005  
Direction   SW   N   WNW       S         SE        
High Heat Index                   80   in 1920            
Wind Chill                             23   in 1974  
Maximum Water Temp   65.5   66.1   64.8   +0.7   68.2   in 2007   59.5   in 2010  
Minimum Water Temp   64.6   64.0   63.1   +1.5   66.2   in 2011   57.6   in 2010  
Average Water Temp   65.1   65.1   63.9   +1.1   66.8   in 2011   58.5   in 2010  
Sunrise/ AM Twilight   6:46:38 AM   6:19:04 AM            
Sunset / PM Twilight   6:20:28 PM   6:48:02 PM            
Length Of Day   11:33:50                          
Special Conditions   None                                  
Comments      
    October 4, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   69.5   67.8   66.5   +3.0   79.8   in 1927   52.5   in 1899  
Avg Minimum Temperature   50.8   51.8   50.8   +0.0   62.8   in 1954   38.3   in 1899  
Average Temperature   60.3   60.0   58.8   +1.5   71.5   in 1927   45.8   in 1899  
Total Precipitation   .00   .38   .48   -.48   2.51   in 1984   .00   in 2020  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   20   24   27   -7   77   in 1899   0   in 1954  
Total CDD   1   4   4   -3   26   in 1927   0   in 2018  
Avg Maximum Dew Point   58.0   61.0   56.3   +1.7   67.5   in 1954   39.3   in 1974  
Avg Minimum Dew Point   47.3   45.3   45.3   +2.0   61.0   in 1954   31.5   in 1965  
Average  Dew Point   53.0   53.5   50.8   +2.2   64.3   in 1954   35.5   in 1974  
    October 4, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   25.26   39.78   35.99   -10.73   48.53   in 1998   17.64   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)   76   67   116   -40   254   in 1956   29   in 1921  
Total CDD (since Jan 1)   868   727   562   +306   868   in 2020   290   in 1902  
                             
Hour-by-Hour Weather For October 4, 2020  
Climate Weather for October 4  
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