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 Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

70°F

21°C

Humidity 90%
Wind Speed S 3 mph
Barometer 30.03 in (1016.4 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 5 Aug 1:53 am CDT
Extended Forecast for

Columbia IL

  • Overnight

    Overnight: Clear, with a low around 68. Light south wind.

    Low: 68 °F

    Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 91. Heat index values as high as 100. South wind 3 to 7 mph.

    High: 91 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms, mainly after 4am.  Low around 71. South wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 80%.

    Low: 71 °F

    Scattered
    T-storms then
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms, mainly before 1pm.  High near 85. Calm wind becoming southwest around 5 mph.  Chance of precipitation is 80%.

    High: 85 °F

    T-storms then
    Scattered
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly after 1am.  Partly cloudy, with a low around 71. Light southeast wind.  Chance of precipitation is 70%.

    Low: 71 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 1pm.  Partly sunny, with a high near 86. Chance of precipitation is 60%.

    High: 86 °F

    T-storms
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 68. Light south wind.
Wednesday
Mostly sunny, with a high near 91. Heat index values as high as 100. South wind 3 to 7 mph.
Wednesday Night
Showers and thunderstorms, mainly after 4am. Low around 71. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Thursday
Showers and thunderstorms, mainly before 1pm. High near 85. Calm wind becoming southwest around 5 mph. Chance of precipitation is 80%.
Thursday Night
Showers and thunderstorms likely, mainly after 1am. Partly cloudy, with a low around 71. Light southeast wind. Chance of precipitation is 70%.
Friday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 71.
Saturday
Mostly sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 72.
Sunday
Sunny, with a high near 93.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Mostly sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
Columbia IL
 38.44°N 90.21°W (Elev. 436 ft)
2:01 am CDT Aug 5, 2026
2am 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