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

55°F

13°C

Humidity 38%
Wind Speed SE 9 mph
Barometer 30.15 in (1021.1 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 24 Mar 10:53 pm CDT
Extended Forecast for

Festus MO

  • Overnight

    Overnight: Mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 63. South wind around 7 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90. Southwest wind 6 to 10 mph, with gusts as high as 22 mph.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Rain, mainly after 1am. Low around 42. Southwest wind 6 to 10 mph becoming north after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%.

    Low: 42 °F

    Chance Rain
    then Rain

  • Friday

    Friday: A 50 percent chance of rain before 1pm. Mostly cloudy, with a high near 53.

    High: 53 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 42. Calm wind.
Wednesday
Mostly sunny, with a high near 80. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 63. South wind around 7 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 90. Southwest wind 6 to 10 mph, with gusts as high as 22 mph.
Thursday Night
Rain, mainly after 1am. Low around 42. Southwest wind 6 to 10 mph becoming north after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%.
Friday
A 50 percent chance of rain before 1pm. Mostly cloudy, with a high near 53.
Friday Night
Mostly clear, with a low around 30.
Saturday
Sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 66.
Sunday Night
Mostly cloudy, with a low around 49.
Monday
Mostly sunny, with a high near 81.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 57.
Tuesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 81.
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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:
12:06 am CDT Mar 25, 2026
Forecast Valid:
12am CDT Mar 25, 2026-6pm CDT Mar 31, 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