Weather in September in Atchison, Ks

< September >
	Normal Max/ High Temperature	26°C (79°F)
	Average Temperature	20°C (68°F)
	Min/ Low Temperature	14°C (57°F)
	Normal Precipitation	123mm (4.9in)
	Average Daylight per day	12h 23'
	Sun altitude at solar noon on the 21st day.	50.9°

• The average temperature in Atchison, Ks in September is warm at 19.9 °C (67.82 °F).
• Afternoons can be hot with average high temperatures reaching 26.1 °C (79 °F).
• Overnight temperatures are generally mild with an average low of 13.8 °C (56.8 °F).
• In September there is a variation/ range of mean diurnal temperatures of 12.3 °C (22.1 °F).
• Precipitation averages for September are high with 123.2mm (4.9 in) recorded.
• The shortest day is 11h 45' long and the longest day is 13h 02' long with an average length of 12h 23'.

Weather Trend Graph for September in Atchison, Ks, Usa