Showers and Storms continue across the East; Heat, Critical Fire Weather, Drought, and Poor Air Quality continues in the West

A series of fronts will focus locally heavy showers and storms across portions of the central and eastern U.S. through the end of the workweek. Dangerous to extreme heat continues across the Southwest U.S., eventually spreading eastward over the weekend into early next week. Elevated fire weather conditions continue across the Great Basin, with degraded air quality lingering across the Northwest. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

70°F

21°C

Humidity 89%
Wind Speed E 3 mph
Barometer 30.04 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 5 Aug 12:35 am CDT
Extended Forecast for

5 Miles WNW Carlinville IL

  • Overnight

    Overnight: Clear, with a low around 65. South wind around 5 mph.

    Low: 65 °F

    Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm.  Partly sunny, then gradually becoming sunny, with a high near 86. Light south wind increasing to 5 to 10 mph in the morning.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms.  Low around 66. Northeast wind 5 to 9 mph becoming calm  after midnight.  Chance of precipitation is 80%.

    Low: 66 °F

    T-storms

  • Thursday

    Thursday: Showers and thunderstorms, mainly before 10am.  High near 81. South wind 3 to 5 mph.  Chance of precipitation is 80%.

    High: 81 °F

    T-storms then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 83.

    High: 83 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am.  Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear
    then Slight
    Chance
    Showers

Detailed Forecast

Overnight
Clear, with a low around 65. South wind around 5 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, then gradually becoming sunny, with a high near 86. Light south wind increasing to 5 to 10 mph in the morning.
Wednesday Night
Showers and thunderstorms. Low around 66. Northeast wind 5 to 9 mph becoming calm after midnight. Chance of precipitation is 80%.
Thursday
Showers and thunderstorms, mainly before 10am. High near 81. South wind 3 to 5 mph. Chance of precipitation is 80%.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 66. Calm wind.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 83.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 69.
Sunday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 72.
Monday
Sunny, with a high near 91.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Carlinville IL
 39.32°N 89.94°W (Elev. 627 ft)
12:21 am CDT Aug 5, 2026
12am CDT Aug 5, 2026-6pm CDT Aug 11, 2026
 
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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