Weather in September in Harrisburg, Il

< September >
	Normal Max/ High Temperature	28°C (83°F)
	Average Temperature	21°C (70°F)
	Min/ Low Temperature	14°C (58°F)
	Normal Precipitation	75mm (3in)
	Average Daylight per day	12h 23'
	Sun altitude at solar noon on the 21st day.	52.5°

• The average temperature in Harrisburg, Il in September is warm at 21.2 °C (70.16 °F).
• Afternoons can be very hot with average high temperatures reaching 28.1 °C (82.6 °F).
• Overnight temperatures are generally mild with an average low of 14.4 °C (57.9 °F).
• In September the mean daily temperature variation/ range is 13.7 °C (24.7 °F).
• Precipitation averages for September are moderate with 75.2mm (3 in) recorded.
• The shortest day is 11h 46' long and the longest day is 12h 59' long with an average length of 12h 23'.

Weather Trend Graph for September in Harrisburg, Il, Usa