Glen Carbon weather
Loading live data…The weather map: all three models at once
NWS, American, European side by side around Glen Carbon and nearby towns.Live rain radar →Next 14 hours
consensus of the three models7-day forecast
where the models agree, and where they splitGlen Carbon is a small town of about 13,000 people in IL, sitting at 38.7°N in a temperate climate zone. NWS, American, European each forecast Glen Carbon with their own physics, so we line all three up and flag where they disagree. Nearby towns include Maryville, Edwardsville, Pontoon Beach.
Which forecast is most accurate in the US?
CheckWeather Score — graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 40 cities. Lower error means a higher score. The apps you know (AccuWeather, Apple Weather, The Weather Channel) are built on these models.
Common questions
What's the weather in Glen Carbon today?
Will it rain in Glen Carbon today or tomorrow?
Which forecast is most accurate for Glen Carbon?
The forecasts Americans check
The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.