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

Summer Heat In Multiple Spots

A large dome of high pressure is expected to deliver summer heat with humidity in multiple sections of the country to start off the week. Excessive heat warnings and heat advisories are in effect across the south-central Plains, Mid to Lower Mississippi Valley and from the Mid-Atlantic into the Northeast. This includes the cities of New York, Philadelphia, Dallas, Oklahoma City and Kansas City. Read More >

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

74°F

23°C

Humidity 91%
Wind Speed S 3 mph
Barometer 29.90 in (1012.4 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 18 Aug 7:56 pm CDT
Extended Forecast for

Waltonville IL

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 71. South wind 5 to 7 mph. Chance of precipitation is 20%.

    Slight Chance
    T-storms

    Low: 71 °F

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 92. Heat index values as high as 105. South southwest wind 3 to 6 mph.

    Slight Chance
    T-storms

    High: 92 °F

  • Monday
    Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. Light south wind.

    Slight Chance
    T-storms

    Low: 71 °F

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. Heat index values as high as 109. Light and variable wind.

    Slight Chance
    T-storms

    High: 95 °F

  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Calm wind.

    Slight Chance
    T-storms

    Low: 73 °F

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 92. Light and variable wind.

    Chance
    T-storms

    High: 92 °F

  • Wednesday
    Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Calm wind.

    Chance
    T-storms

    Low: 69 °F

  • Thursday

    Thursday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 84. Calm wind.

    Chance
    T-storms

    High: 84 °F

  • Thursday
    Night

    Thursday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Calm wind.

    Slight Chance
    T-storms

    Low: 64 °F

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 71. South wind 5 to 7 mph. Chance of precipitation is 20%.
Monday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 92. Heat index values as high as 105. South southwest wind 3 to 6 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. Light south wind.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. Heat index values as high as 109. Light and variable wind.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Calm wind.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 92. Light and variable wind.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Calm wind.
Thursday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 84. Calm wind.
Thursday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Calm wind.
Friday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 83. Light east northeast wind.
Friday Night
Partly cloudy, with a low around 62. Calm wind.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Light east wind.
Saturday Night
Partly cloudy, with a low around 63. Calm wind.
Sunday
Mostly sunny, with a high near 87. Light south wind.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Waltonville IL
 38.23°N 89.03°W
Last Update:
7:17 pm CDT Aug 18, 2019
Forecast Valid:
8pm CDT Aug 18, 2019-6pm CDT Aug 25, 2019
 
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