National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Mostly Cloudy

71°F

22°C

Humidity 81%
Wind Speed S 14 mph
Barometer 29.80 in (1009.2 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 10 Mar 8:56 pm CDT
Extended Forecast for

Waltonville IL

  • Tonight

    Tonight: A chance of showers and thunderstorms between 1am and 3am, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 61. West northwest wind 8 to 16 mph becoming south southwest in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 70%.

    Low: 61 °F

    Mostly Cloudy
    then Showers
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms before 3pm, then a chance of showers. Temperature rising to near 69 by noon, then falling to around 53 during the remainder of the day. Breezy, with a southwest wind 17 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%.

    High: 69 °F⇓

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 32. Breezy, with a north northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 31 mph.

    Low: 32 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 54. North northwest wind 5 to 8 mph becoming southwest in the afternoon.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42. South wind 6 to 11 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 29 mph.

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 63. Southwest wind 11 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 28 mph.

    High: 63 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. North northwest wind around 6 mph becoming east after midnight.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 67. East wind 7 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53. South southeast wind 9 to 14 mph, with gusts as high as 24 mph.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms between 1am and 3am, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 61. West northwest wind 8 to 16 mph becoming south southwest in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 70%.
Wednesday
Showers and thunderstorms before 3pm, then a chance of showers. Temperature rising to near 69 by noon, then falling to around 53 during the remainder of the day. Breezy, with a southwest wind 17 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 32. Breezy, with a north northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 31 mph.
Thursday
Sunny, with a high near 54. North northwest wind 5 to 8 mph becoming southwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 42. South wind 6 to 11 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 29 mph.
Friday
Partly sunny, with a high near 63. Southwest wind 11 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 28 mph.
Friday Night
Partly cloudy, with a low around 38. North northwest wind around 6 mph becoming east after midnight.
Saturday
Mostly sunny, with a high near 67. East wind 7 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 53. South southeast wind 9 to 14 mph, with gusts as high as 24 mph.
Sunday
A chance of showers and thunderstorms, then showers likely after 1pm. Mostly cloudy, with a high near 67. Breezy, with a south wind 16 to 21 mph becoming west in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 23. Blustery, with a northwest wind 17 to 20 mph, with gusts as high as 30 mph.
Monday
Mostly sunny, with a high near 37. Northwest wind 13 to 15 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 18. North northwest wind 5 to 8 mph.
Tuesday
Mostly sunny, with a high near 43. Northwest wind 5 to 8 mph becoming south southwest in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.23°N 89.03°W
Last Update:
9:36 pm CDT Mar 10, 2026
Forecast Valid:
9pm CDT Mar 10, 2026-6pm CDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation