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

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

A Few Clouds

60°F

16°C

Humidity 78%
Wind Speed SW 17 G 24 mph
Barometer 29.60 in (1001.9 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 18 Feb 4:51 am CST
Extended Forecast for

Frontenac MO

  • Today

    Today: Sunny, with a high near 73. Southwest wind 5 to 11 mph, with gusts as high as 22 mph.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 51. South wind 3 to 7 mph.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 71. South wind 7 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 29 mph.

    High: 71 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37. West wind 10 to 16 mph, with gusts as high as 28 mph.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 50. West wind 7 to 14 mph, with gusts as high as 25 mph.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of snow. Partly sunny, with a high near 43.

    High: 43 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow before midnight. Partly cloudy, with a low around 25.

    Low: 25 °F

    Chance Snow
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 73. Southwest wind 5 to 11 mph, with gusts as high as 22 mph.
Tonight
Partly cloudy, with a low around 51. South wind 3 to 7 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 71. South wind 7 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 29 mph.
Thursday Night
Mostly clear, with a low around 37. West wind 10 to 16 mph, with gusts as high as 28 mph.
Friday
Sunny, with a high near 50. West wind 7 to 14 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 32.
Saturday
A 40 percent chance of snow. Partly sunny, with a high near 43.
Saturday Night
A 30 percent chance of snow before midnight. Partly cloudy, with a low around 25.
Sunday
Sunny, with a high near 39.
Sunday Night
Mostly clear, with a low around 20.
Monday
Sunny, with a high near 38.
Monday Night
Mostly clear, with a low around 21.
Tuesday
Mostly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Frontenac MO
 38.62°N 90.43°W (Elev. 597 ft)
Last Update:
3:06 am CST Feb 18, 2026
Forecast Valid:
5am CST Feb 18, 2026-6pm CST Feb 24, 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