Portsmouth Rhode Island Weather Almanac  
Tuesday, September 20, 2022  
Partly Cloudy, Light Shower @ 2am, to Cloudy PM, Light Winds and Cooler  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2022
    September 20, 2022   Record   Record  
Observed Daily Data   2022   2021   Norm   Depart   Highest   Lowest  
Maximum Temperature   73   75   71   +2   85   in 1983   59   in 1993  
Minimum Temperature   59   53   56   +3   69   in 1938   38   in 1979  
Average Temperature   66   64   63   +3   76   in 1983   50   in 1979  
 Month Avg Max Temperature   75.1   75.6   73.7   +1.4   81.3   in 1983   68.4   in 1913  
Month Avg Min Temperature   60.0   61.3   58.8   +1.2   64.0   in 1915   52.9   in 1984  
Month Average Temperature   67.7   68.7   66.2   +1.5   72.0   in 1961   61.8   in 1913  
High Heat Index   74   76   71   +3   88   in 1983            
Low Wind Chill                             37   in 1979  
Heating Degree Days   0   1   3   -3   15   in 1979   0   in 2022  
Month HDD   12   2   32   -20   95   in 1913   0   in 2015  
Season HDD   12   2   39   -27   95   in 1913   0   in 2015  
Cooling Degree Days   1   0   1   +0   11   in 1983   0   in 2021  
Month CDD   66   76   56   +10   155   in 1961   7   in 1893  
Year CDD   770   759   593   +177   840   in 2020   282   in 1902  
Maximum Dew Point   65   62   62   +3   74   in 1989   38   in 1993  
Minimum Dew Point   57   50   52   +5   66   in 2016   26   in 1993  
Average  Dew Point   61   56   57   +4   69   in 2016   32   in 1993  
 Month Avg Max Dew Point   65.1   67.1   63.9   +1.2   68.7   in 2018   54.9   in 1984  
Month Avg Min Dew Point   56.0   57.5   54.4   +1.7   60.7   in 2018   44.5   in 1984  
Month Average Dew Point   60.9   62.5   59.1   +1.8   64.9   in 2018   49.7   in 1984  
Precipitation   .01   .00   .13   -.12   7.81   in 1960            
One Hour   .01   .00           1.65   in 1960            
Hourly Rate   .00   .00           1.48   in 2006            
Month Precipitation   3.26   8.56   2.45   +.81   9.57   in 1960   .06   in 1946  
Year Precipitation   28.68   37.66   31.73   -3.05   46.35   in 1998   17.53   in 1957  
Snow   #N/A   #N/A   0.0   #N/A       in         in    
Snow Depth   #N/A   #N/A               in         in    
Month Snow   0.0   0.0   0.0   +0.0       in         in    
Season Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in #N/A  
    September 20, 2022     Record Record
Observed Daily Data   2022   2021   Norm   Depart   Highest Lowest
Maximum Humidity   99%   96%   94%   +5%   100%   in 2017   66%   in 1993  
Minimum Humidity   76%   51%   61%   +15%   91%   in 1988   32%   in 2020  
Average Humidity   88%   74%   78%   +10%   96%   in 1988   50%   in 1993  
Maximum Barometer   29.92   30.40   30.14   -00.22   30.55   in 2020   29.61   in 1954  
Minimum Barometer   29.81   30.25   29.94   -00.13   30.38   in 2020   29.39   in 1955  
Average Barometer   29.87   30.33   30.04   -00.17   30.47   in 2020   29.56   in 1955  
Average Wind   3.3   2.9   6.4   -3.1   18.7   in 2017   2.0   in 2016  
Direction   ENE   ENE   SSW       NNE SSW
High Wind Gust   15   15   21   -6   41   in 1984   9   in 2016  
Direction   N   SSW   SSW       SW NNW
Maximum Water Temp   70.9   70.9   68.1   +2.8   71.5   in 2003   65.5   in 2020  
Minimum Water Temp   69.8   69.3   66.0   +3.8   69.8   in 2022   63.1   in 2004  
Average Water Temp   70.4   70.1   67.0   +3.3   70.4   in 2022   64.4   in 2004  
Sunrise/ AM Twilight   6:30:27 AM   6:03:31 AM            
Sunset / PM Twilight   6:45:40 PM   7:13:31 PM            
Length Of Day   12:15:13                          
Special Conditions   None                              
Comments   Moderate Drought  
Hour-by-Hour Weather For September 20, 2022            
Climate Weather for September 20            
Weather History For September 20            
Weather Calendar            
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