Weather in Lake Forest, Illinois
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 05:07 PM ET · Refreshes every hour
70°F
Clear sky
Feels like 72°F
67%
Humidity
5 mph
Wind Speed
About Weather in Lake Forest
Lake Forest is located in Illinois (coordinates: 42.23535°N, 87.857305°W). Weather data is sourced from Open-Meteo, a free and open meteorological API using data from national weather services including NOAA.
All temperatures are displayed in Fahrenheit. Wind speed is in miles per hour.