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

Three Weather Areas of Concern Today

Potential Tropical Cyclone Three will gradually approach the northern Gulf Coast with heavy rain and potential flooding. Meanwhile, a sharp cold front will produce severe thunderstorms with significant winds, hail, tornadoes and possible flooding across the Ohio Valley. Finally, a large dome of high pressure will continue the major heat wave over the West, extending into the central Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

87°F

31°C

Humidity 65%
Wind Speed SW 12 mph
Barometer 29.87 in (1011.3 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 18 Jun 7:56 pm CDT
Extended Forecast for

Waltonville IL

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 73. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.

    Partly Cloudy
    then Slight
    Chance
    T-storms

    Low: 73 °F

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 94. South southwest wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Slight Chance
    T-storms

    High: 94 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 72. South southwest wind 7 to 10 mph.

    Partly Cloudy

    Low: 72 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 94. South southwest wind 9 to 14 mph, with gusts as high as 20 mph.

    Mostly Sunny

    High: 94 °F

  • Sunday
    Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South southwest wind 9 to 14 mph, with gusts as high as 20 mph.

    Partly Cloudy
    then Slight
    Chance
    T-storms

    Low: 74 °F

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. West southwest wind 7 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    Showers
    Likely

    High: 85 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 56. North northwest wind 6 to 10 mph.

    Chance
    T-storms

    Low: 56 °F

  • Tuesday

    Tuesday: Sunny, with a high near 77. North wind 6 to 8 mph.

    Sunny

    High: 77 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 55. North wind around 5 mph becoming calm in the evening.

    Mostly Clear

    Low: 55 °F

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 73. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Saturday
A slight chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 94. South southwest wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 72. South southwest wind 7 to 10 mph.
Sunday
Mostly sunny, with a high near 94. South southwest wind 9 to 14 mph, with gusts as high as 20 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South southwest wind 9 to 14 mph, with gusts as high as 20 mph.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. West southwest wind 7 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Monday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 56. North northwest wind 6 to 10 mph.
Tuesday
Sunny, with a high near 77. North wind 6 to 8 mph.
Tuesday Night
Mostly clear, with a low around 55. North wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 83. Calm wind becoming south 5 to 8 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 61. South wind around 6 mph becoming calm in the evening.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Light south wind increasing to 5 to 9 mph in the morning.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. South wind 6 to 9 mph, with gusts as high as 18 mph.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. South southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Waltonville IL
 38.23°N 89.03°W
Last Update:
7:16 pm CDT Jun 18, 2021
Forecast Valid:
8pm CDT Jun 18, 2021-6pm CDT Jun 25, 2021
 
Forecast Discussion
 
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Additional Resources

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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