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.

Mostly Cloudy

61°F

16°C

Humidity 19%
Wind Speed NW 12 mph
Barometer 30.26 in (1024.9 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 6 Apr 5:51 pm CDT
Extended Forecast for

Frontenac MO

  • Tonight

    Tonight: Increasing clouds, with a low around 39. Northeast wind 6 to 9 mph, with gusts as high as 22 mph.

    Low: 39 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 56. East wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 56 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 41. East wind around 9 mph, with gusts as high as 22 mph.

    Low: 41 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 74. South wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 74 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 54. South wind 8 to 10 mph.

    Low: 54 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.

    High: 76 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.

    Low: 57 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Increasing clouds, with a low around 39. Northeast wind 6 to 9 mph, with gusts as high as 22 mph.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 56. East wind 8 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Increasing clouds, with a low around 41. East wind around 9 mph, with gusts as high as 22 mph.
Wednesday
Partly sunny, with a high near 74. South wind 8 to 13 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 54. South wind 8 to 10 mph.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 58.
Friday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 62.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Frontenac MO
 38.62°N 90.4°W (Elev. 597 ft)
Last Update:
5:36 pm CDT Apr 6, 2026
Forecast Valid:
6pm CDT Apr 6, 2026-6pm CDT Apr 13, 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