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.

Light Snow

25°F

-4°C

Humidity 58%
Wind Speed NW 20 G 31 mph
Barometer 30.15 in (1021.6 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 16 Mar 8:53 pm CDT
Extended Forecast for

Festus MO

  • Tonight

    Tonight: Mostly cloudy early, then clearing, with a low around 14. Northwest wind 8 to 11 mph, with gusts as high as 23 mph.

    Low: 14 °F

    Clearing

  • Tuesday

    Tuesday: Increasing clouds, with a high near 38. Northwest wind 5 to 8 mph becoming southwest in the afternoon.

    High: 38 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A chance of snow before 3am, then a slight chance of rain. Cloudy, with a low around 31. Southeast wind 6 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

    Low: 31 °F

    Chance Snow
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 66. South wind around 8 mph becoming west in the afternoon.

    High: 66 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy early, then clearing, with a low around 14. Northwest wind 8 to 11 mph, with gusts as high as 23 mph.
Tuesday
Increasing clouds, with a high near 38. Northwest wind 5 to 8 mph becoming southwest in the afternoon.
Tuesday Night
A chance of snow before 3am, then a slight chance of rain. Cloudy, with a low around 31. Southeast wind 6 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 66. South wind around 8 mph becoming west in the afternoon.
Wednesday Night
Partly cloudy, with a low around 44. Calm wind.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Mostly clear, with a low around 46.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Festus MO
 38.22°N 90.39°W (Elev. 446 ft)
Last Update:
8:56 pm CDT Mar 16, 2026
Forecast Valid:
9pm CDT Mar 16, 2026-6pm CDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation