Weather in September in Wilmington, De

< September >
	Normal Max/ High Temperature	25°C (78°F)
	Average Temperature	20°C (68°F)
	Min/ Low Temperature	15°C (58°F)
	Normal Precipitation	87mm (3.4in)
	Average Daylight per day	12h 23'
	Sun altitude at solar noon on the 21st day.	50.9°

• The average temperature in Wilmington, De in September is warm at 20 °C (68 °F).
• Afternoons can be fairly hot with average high temperatures reaching 25.4 °C (77.7 °F).
• Overnight temperatures are generally mild with an average low of 14.6 °C (58.3 °F).
• In September the mean daily temperature variation/ range is 10.8 °C (19.4 °F).
• Precipitation averages for September are high with 87.1mm (3.4 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 Wilmington, De, Usa