Weather in Chester, IL
Updated 2026-09-26 11:45 local time · ZIP codes 62233
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
71°9% rain76°9% rain75°9% rain76°9% rain75°9% rain72°9% rain71°9% rain
68°10% rain
67°10% rain67°11% rain66°11% rain66°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 11%).
It feels like 65°F with winds near 5 mph.
71°F, 9% rain chance and 7 mph wind.
Visibility is around 6 mi; gusts may reach 18 mph.
Current temperature is 71°F, wind 5 mph, rain chance up to 11%.
UV index is 3. Sunscreen and sunglasses are sensible for longer outdoor time.
Local weather characteristics in Chester
Illinois has four distinct seasons with hot, humid summers, cold winters, strong frontal changes and frequent spring and summer thunderstorms.
Chester is part of the Midwest weather region. The forecast point is near 37.91°N latitude and 89.82°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.
Chester weather today
Overcast and 71°F in Chester, IL. Today's high is 76°F with a 10% rain chance. Winds are around 5 mph with gusts near 6 mph. Relative humidity is 28%, pressure is 30.14 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Chester
Sunrise is at 06:50 AM and sunset is at 06:50 PM. Tomorrow's forecast calls for Overcast with a high near 81°F and a low near 62°F. The maximum rain chance is 5%.