National Weather Service

News Headlines

2026 Skywarn Storm Spotter Classes underway! Check back as new classes are added often.

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

N/A

Humidity	NA
Wind Speed	NA
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	* Not a current observation *

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Waltonville IL

Cold Weather Advisory January 24, 06:01pm until January 26, 12:00am

Extreme Cold Warning January 26, 12:00am until January 27, 10:00am

Winter Storm Warning January 24, 06:01pm until January 25, 06:00pm

Click here for hazard details and duration

Cold Weather Advisory

Extreme Cold Warning

Winter Storm Warning

Cold Weather Advisory January 24, 06:01pm until January 26, 12:00am
Winter Storm Warning January 24, 06:01pm until January 25, 06:00pm
NOW: Multiple hazards in effect
Click HERE for Details
Tonight
Low: 12 °F
Heavy Snow
Sunday
High: 16 °F
Snow
Sunday Night
Low: -4 °F
Slight Chance
Snow then
Mostly Clear
Monday
High: 13 °F
Sunny
Monday Night
Low: -1 °F
Mostly Clear
Tuesday
High: 28 °F
Sunny
Tuesday Night
Low: 4 °F
Partly Cloudy
Wednesday
High: 24 °F
Partly Sunny

Detailed Forecast

Tonight

Snow. The snow could be heavy at times. Low around 12. Wind chill values as low as -1. Northeast wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 7 inches possible.

Sunday

Snow, mainly before 4pm. High near 16. Wind chill values as low as -3. North wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Sunday Night

A 20 percent chance of snow before 7pm. Cloudy during the early evening, then gradual clearing, with a low around -4. Wind chill values as low as -19. Northwest wind 9 to 14 mph, with gusts as high as 24 mph.

Monday

Sunny, with a high near 13. Wind chill values as low as -19. West northwest wind 6 to 10 mph.

Monday Night

Mostly clear, with a low around -1. Light west southwest wind becoming south southwest 6 to 11 mph in the evening. Winds could gust as high as 21 mph.

Tuesday

Sunny, with a high near 28. Southwest wind 6 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.

Tuesday Night

Partly cloudy, with a low around 4. Light north northwest wind.

Wednesday

Partly sunny, with a high near 24. Calm wind becoming west 5 to 7 mph in the morning.

Wednesday Night

Mostly cloudy, with a low around 1. Light and variable wind becoming northwest around 6 mph in the evening.

Thursday

Partly sunny, with a high near 17. North northwest wind 5 to 7 mph.

Thursday Night

Partly cloudy, with a low around 1. Light north northwest wind.