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

86°F

30°C

Humidity 36%
Wind Speed NE 6 mph
Barometer 30.07 in (1017.8 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 1 Oct 4:53 pm CDT
Extended Forecast for

Festus MO

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. East wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 89. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Mostly clear, with a low around 62. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90. Light south wind.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 61. East wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 89. Calm wind becoming southeast around 5 mph in the afternoon.
Thursday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Mostly clear, with a low around 62. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday
Sunny, with a high near 90. Light south wind.
Friday Night
Mostly clear, with a low around 59. Calm wind.
Saturday
Sunny, with a high near 87.
Saturday Night
Clear, with a low around 58.
Sunday
Sunny, with a high near 87.
Sunday Night
Mostly clear, with a low around 61.
Monday
Sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 62.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 77.
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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:
4:16 pm CDT Oct 1, 2025
Forecast Valid:
5pm CDT Oct 1, 2025-6pm CDT Oct 8, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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