Weather in Mc Lean, IL
Updated 2026-09-26 11:00 local time · ZIP codes 61754
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
64°13% rain65°12% rain66°12% rain67°11% rain67°11% rain68°9% rain68°11% rain68°13% rain
65°14% rain64°15% rain64°13% rain64°13% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 15%).
It feels like 60°F with winds near 7 mph.
68°F, 9% rain chance and 4 mph wind.
Visibility is around 6 mi; gusts may reach 14 mph.
Current temperature is 64°F, wind 7 mph, rain chance up to 15%.
UV index is 4. Sunscreen and sunglasses are sensible for longer outdoor time.
Local weather characteristics in Mc Lean
Illinois has four distinct seasons with hot, humid summers, cold winters, strong frontal changes and frequent spring and summer thunderstorms.
Mc Lean is part of the Midwest weather region. The forecast point is near 40.31°N latitude and 89.17°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Mc Lean weather today
Overcast and 64°F in Mc Lean, IL. Today's high is 68°F with a 13% rain chance. Winds are around 7 mph with gusts near 9 mph. Relative humidity is 55%, pressure is 30.17 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Mc Lean
Sunrise is at 06:48 AM and sunset is at 06:47 PM. Tomorrow's forecast calls for Sunny with a high near 73°F and a low near 57°F. The maximum rain chance is 6%.