Glen Carbon, IL Weather Forecast
Madison County, Illinois
Live radar, warnings and storm tracking for Glen Carbon, with free alerts the moment it counts.
The next few hours
A dry overnight, mostly sunny
It is 40°, but the wind is taking it down to 36° on exposed skin. The sky is mostly sunny.
Nothing in the next day and a half is wet enough to move plans for.
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Quiet through the next day and a half
Nothing wet is expected over the next day and a half.
The overnight low settles near 44°. Tomorrow tops out near 69°.
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
31–69°F across the weekThe week runs between 31° and 69°, with tomorrow the warmest day of it. The second half leans cooling, and Friday is the coolest day in it. Wednesday is the wettest day, peaking near 56%. 5 of the 7 days stay dry.
Free alerts for Glen Carbon
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Glen Carbon, IL at a glance
Glen Carbon is home to about 13,868 people in Madison County, across 10 square miles. It ranks 177th by population of 441 places in Illinois with a forecast here. The nearest neighbour with its own forecast is Maryville, 2 miles away.
- County
- Madison County
- Population
- 13,868 2023 est.
- Land area
- 10 sq mi
- People per sq mi
- 1,345
- Forecast point
- 38.7582°N, 89.9831°W
How well can the network see Glen Carbon?
The nearest Doppler radar is KLSX (St. Louis, MO), to the W. Its lowest scan passes about 2,500 ft above Glen Carbon. Close enough to see rotation in the low part of a storm, where tornadoes form. Glen Carbon is closer to its radar than 59% of US cities.
The closest weather station is KALN (Alton/St Louis Rgnl). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Glen Carbon
- Maryville, IL2 mi
- Edwardsville, IL2 mi
- Pontoon Beach, IL5 mi
- Troy, IL6 mi
- Collinsville, IL6 mi
- Granite City, IL8 mi
- Madison, IL8 mi
- Wood River, IL9 mi
Elsewhere in Illinois
ChicagoAuroraJolietNapervilleRockfordElginAll Illinois forecasts →