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Weather in September in Decatur, Il

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< September >
 
Normal Max/ High Temperature 27°C (80°F)
 
Average Temperature 20°C (68°F)
 
Min/ Low Temperature 13°C (55°F)
 
Normal Precipitation 86mm (3.4in)
Average Daylight per day 12:25
Sun altitude at solar noon on the 21st day.
50.5°


  • The average temperature in Decatur, Il in September is warm at 19.8 °C (67.64 °F).
  • Afternoons can be hot with average high temperatures reaching 26.7 °C (80.1 °F).
  • Overnight temperatures are generally mild with an average low of 12.8 °C (55 °F).
  • The range/ variation of daily mean temperatures in September is 13.9 °C (25 °F).
  • The weather in September is dryish. Just 86.4mm (3.4in) of liquid is laid down.
  • The shortest day is 11:46 long and the longest day is 13:03 long with an average length of 12:25.

Check the distance to and compare the Decatur, Il September averages with somewhere beginning with:

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Weather Trend Graph for September in Decatur, Il, Usa

Graph of weather in Decatur, Il in September

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