Portsmouth Rhode Island Weather Almanac
Wednesday, September 9, 2020
Cloudy early, Partly Cloudy day to Cloudy and Fog PM, Light Winds, Continued Warm and Humid
Climate Normal Period Climate Record Period  
1981- 2010   1893 - 2020  
    September 9, 2020     Record Record
Observed Daily Data   Observed   2019   Normal   Depart   Highest Lowest
Maximum Temperature   80   77   74   +6   91   in 2016   62   in 1919  
Minimum Temperature   64   57   59   +5   71   in 2015   45   in 1952  
Average Temperature   72   67   66   +6   81   in 2016   56   in 1938  
Precipitation   T   .00   .13   .00   2.59   in 1969            
One Hour   T   .00           .47   in 1969            
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 1938   0   in 2020  
CDD   7   2   3   +4   16   in 2016   0   in 2018  
Maximum Dew Point   70   64   62   +8   75   in 2016   46   in 1956  
Minimum Dew Point   62   52   53   +9   70   in 1999   36   in 1980  
Average  Dew Point   66   58   57   +9   72   in 2016   44   in 1956  
Maximum Humidity   98%   94%   92%   +6%   100%   in 2005   69%   in 1980  
Minimum Humidity   64%   51%   58%   +6%   90%   in 1999   29%   in 1957  
Average Humidity   81%   73%   75%   +6%   95%   in 1999   52%   in 1980  
Maximum Barometer   30.33   30.31   30.12   +00.21   30.44   in 1986   29.72   in 2010  
Minimum Barometer   30.23   30.16   29.93   +00.30   30.23   in 2020   29.41   in 1987  
Average Barometer   30.28   30.24   30.02   +00.26   30.32   in 1952   29.62   in 1969  
Average Wind   2.6   4.3   5.6   -3.0   10.8   in 1969   2.3   in 1961  
Direction   SSE   N   SSW       NNE         SSW        
High Wind Gust   11   17   20   -9   45   in 1949   11   in 2020  
Direction   SSE   S   SSW       NW         SSE        
High Heat Index   82   77   75   +7   100   in 2016            
Wind Chill                             #N/A   in #N/A  
Maximum Water Temp   72.0   69.4   70.0   +2.0   74.5   in 2015   65.7   in 1997  
Minimum Water Temp   70.3   68.2   67.5   +2.8   72.0   in 2015   63.9   in 2004  
Average Water Temp   71.2   68.8   68.8   +2.4   73.3   in 2015   65.0   in 2017  
Sunrise/ AM Twilight   6:20:52 AM   5:52:59 AM            
Sunset / PM Twilight   7:03:20 PM   7:31:14 PM            
Length Of Day   12:42:28                          
Special Conditions   Dense Fog                              
Comments      
    September 9, 2020     Record Record
Month-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
 Avg Maximum Temperature   79.6   75.0   74.9   +4.7   84.7   in 1983   69.0   in 1994  
Avg Minimum Temperature   63.4   58.6   59.8   +3.7   68.0   in 1898   51.4   in 1893  
Average Temperature   71.7   66.9   67.3   +4.3   75.7   in 1959   62.1   in 1994  
Total Precipitation   .39   .08   1.17   -.78   4.18   in 1905   .00   in 2015  
Total Snow   0.0   0.0   0.0   +0.0   0.0   in     0.0   in    
Total HDD   0   5   9   -9   33   in 1994   0   in 2020  
Total CDD   60   22   32   +28   96   in 1959   0   in 1893  
Avg Maximum Dew Point   67.9   64.3   62.8   +5.1   70.7   in 1959   52.9   in 1984  
Avg Minimum Dew Point   58.1   54.6   53.8   +4.3   64.0   in 1959   43.6   in 1984  
Average  Dew Point   63.1   59.7   58.3   +4.8   67.3   in 1959   48.2   in 1984  
    September 9, 2020     Record Record
Year-to-Date Summary   Observed   2019   Normal Depart Highest Lowest
Total Precipitation   24.42   37.91   32.79   -8.37   46.33   in 1998   16.94   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   5   18   -18   33   in 1994   0   in 2020  
Total CDD (since Jan 1)   826   680   530   +296   826   in 2020   279   in 1902  
                             
Hour-by-Hour Weather For September 9, 2020  
Climate Weather for September 9  
Weather History For September 9  
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