Mount Vernon weather
Loading live data…Latest for Mount Vernon: NWS (National Blend (NBM)): 78° Mainly clear · American (NOAA GFS): 80° Clear · European (ECMWF): 79° Mainly clear.
The weather map: all three models at once
NWS, American, European side by side around Mount Vernon and nearby towns.Live rain radar →Next 14 hours
consensus of the three models7-day forecast
where the models agree, and where they splitMount Vernon is a small town of about 15,000 people in IL, sitting at 38.3°N in a temperate climate zone. NWS, American, European each forecast Mount Vernon with their own physics, so we line all three up and flag where they disagree. Nearby towns include Centralia, Salem, Benton.
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 Mount Vernon today?
Will it rain in Mount Vernon today or tomorrow?
Which forecast is most accurate for Mount Vernon?
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.