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.

A Few Clouds

65°F

18°C

Humidity 73%
Wind Speed NE 7 mph
Barometer 30.03 in (1017.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 1 Apr 9:56 am CDT
Extended Forecast for

Waltonville IL

  • Today

    Today: Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 70. Southeast wind 6 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 80%.

    High: 70 °F

    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Mostly cloudy, with a low around 65. Southeast wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. Breezy, with a south wind 16 to 25 mph, with gusts as high as 39 mph. Chance of precipitation is 60%.

    High: 78 °F

    Breezy.
    Mostly Cloudy
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 63. Breezy, with a south wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 70%.

    Low: 63 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. South wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 58. South wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    Low: 58 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 68. South southwest wind around 14 mph becoming west northwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%.

    High: 68 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 1am. Partly cloudy, with a low around 39. Northwest wind 11 to 14 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 57. Northwest wind 10 to 15 mph, with gusts as high as 21 mph.

    High: 57 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 70. Southeast wind 6 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 80%.
Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Mostly cloudy, with a low around 65. Southeast wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Thursday
Showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. Breezy, with a south wind 16 to 25 mph, with gusts as high as 39 mph. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 63. Breezy, with a south wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 70%.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. South wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 58. South wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Saturday
Showers and possibly a thunderstorm. High near 68. South southwest wind around 14 mph becoming west northwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%.
Saturday Night
A chance of showers before 1am. Partly cloudy, with a low around 39. Northwest wind 11 to 14 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 57. Northwest wind 10 to 15 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 35. North northwest wind 5 to 9 mph becoming calm after midnight.
Monday
Sunny, with a high near 64. Calm wind becoming south southwest around 6 mph in the morning.
Monday Night
Partly cloudy, with a low around 42. Southwest wind 3 to 5 mph.
Tuesday
Sunny, with a high near 61. North wind 5 to 8 mph.
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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:
9:12 am CDT Apr 1, 2026
Forecast Valid:
10am CDT Apr 1, 2026-6pm CDT Apr 7, 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