Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

76°F

24°C

Humidity 72%
Wind Speed Calm
Barometer 29.99 in (1015.2 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 3 Aug 9:53 am CDT
Extended Forecast for

Columbia IL

  • Today

    Today: Sunny, with a high near 85. Light north wind.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. Light east wind.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88. Light southeast wind.

    High: 88 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67. Southeast wind around 5 mph becoming calm  after midnight.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. Calm wind becoming south around 5 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly before 1am.  Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    Low: 70 °F

    T-storms
    Likely

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 85. Light north wind.
Tonight
Mostly clear, with a low around 65. Light east wind.
Tuesday
Mostly sunny, with a high near 88. Light southeast wind.
Tuesday Night
Mostly clear, with a low around 67. Southeast wind around 5 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 90. Calm wind becoming south around 5 mph.
Wednesday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 69.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Columbia IL
 38.46°N 90.21°W (Elev. 436 ft)
7:56 am CDT Aug 3, 2026
10am CDT Aug 3, 2026-6pm CDT Aug 9, 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