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

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

71°F

22°C

Humidity 61%
Wind Speed SE 5 mph
Barometer 30.04 in (1017.1 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 11 Oct 10:53 am CDT
Extended Forecast for

Festus MO

  • Today

    Today: Sunny, with a high near 90. Calm wind.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. Light and variable wind becoming south around 5 mph.

    Low: 61 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 94. Southwest wind 5 to 9 mph.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. South wind 5 to 7 mph.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. Southwest wind 5 to 7 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

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

    Low: 71 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 86. Chance of precipitation is 80%.

    High: 86 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

    Low: 62 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.

    High: 81 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 90. Calm wind.
Tonight
Mostly clear, with a low around 61. Light and variable wind becoming south around 5 mph.
Columbus Day
Sunny, with a high near 94. Southwest wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 69. South wind 5 to 7 mph.
Tuesday
Sunny, with a high near 94. Southwest wind 5 to 7 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.
Wednesday
Showers and possibly a thunderstorm. High near 86. Chance of precipitation is 80%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Festus MO
 38.22°N 90.42°W (Elev. 499 ft)
Last Update:
11:16 am CDT Oct 11, 2026
Forecast Valid:
11am CDT Oct 11, 2026-6pm CDT Oct 17, 2026
 
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