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

62°F

17°C

Humidity 62%
Wind Speed SW 6 mph
Barometer 30.05 in (1017.2 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 22 Apr 4:53 am CDT
Extended Forecast for

Festus MO

  • Today

    Today: Sunny, with a high near 80. Southwest wind 3 to 6 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. Light south wind.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Light southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 24 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 61. South wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 61 °F

    Partly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 77. South wind 6 to 8 mph. Chance of precipitation is 90%.

    High: 77 °F

    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 1am. Partly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 80. Southwest wind 3 to 6 mph.
Tonight
Mostly clear, with a low around 56. Light south wind.
Thursday
Sunny, with a high near 82. Light southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 24 mph.
Thursday Night
Showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 61. South wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Friday
Showers and possibly a thunderstorm. High near 77. South wind 6 to 8 mph. Chance of precipitation is 90%.
Friday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. Chance of precipitation is 70%.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 49.
Tuesday
Sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Festus MO
 38.22°N 90.39°W (Elev. 446 ft)
Last Update:
4:11 am CDT Apr 22, 2026
Forecast Valid:
5am CDT Apr 22, 2026-6pm CDT Apr 28, 2026
 
Forecast Discussion
 
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Additional Resources

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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