Weather in Grand Chain, IL
Updated 2026-09-26 11:00 local time · ZIP codes 62941
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
71°9% rain72°9% rain75°9% rain76°9% rain77°8% rain77°9% rain75°9% rain72°9% rain
70°10% rain69°10% rain67°10% rain69°10% 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 10%).
It feels like 64°F with winds near 6 mph.
71°F, 9% rain chance and 6 mph wind.
Visibility is around 6 mi; gusts may reach 16 mph.
Current temperature is 71°F, wind 6 mph, rain chance up to 10%.
UV index is 3. Sunscreen and sunglasses are sensible for longer outdoor time.
Local weather characteristics in Grand Chain
Illinois has four distinct seasons with hot, humid summers, cold winters, strong frontal changes and frequent spring and summer thunderstorms.
Grand Chain is part of the Midwest weather region. The forecast point is near 37.25°N latitude and 89.02°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.
Grand Chain weather today
Overcast and 71°F in Grand Chain, IL. Today's high is 77°F with a 8% rain chance. Winds are around 6 mph with gusts near 8 mph. Relative humidity is 28%, pressure is 30.13 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Grand Chain
Sunrise is at 06:47 AM and sunset is at 06:47 PM. Tomorrow's forecast calls for Overcast with a high near 80°F and a low near 61°F. The maximum rain chance is 20%.