August in Elgin averages a daily high of 28.1°C with nights around 16.5°C. Expect roughly 10.3 wet days totalling 112mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Elgin is August–September.
Based on ELGIN WATER, IL US (2.9km), 1995–2024. 30 years of August data.