October in Elgin averages a daily high of 17.3°C with nights around 5.3°C. Expect roughly 11.2 wet days totalling 86.1mm. Generally workable, with some weather to plan around.
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 October data.