April in Portage Park averages a daily high of 15°C with nights around 4°C. Expect roughly 12.3 wet days totalling 94.1mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Portage Park is August–September.
Based on CHICAGO OHARE INTERNATIONAL AIRPORT, IL US (13.8km), 1995–2024. 30 years of April data.