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

66°F

19°C

Humidity 68%
Wind Speed S 12 mph
Barometer 30.07 in (1017.4 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 12 Apr 3:51 am CDT
Extended Forecast for

Frontenac MO

  • Today

    Today: A 30 percent chance of showers, mainly after 5pm. Partly sunny, with a high near 82. South wind 7 to 17 mph, with gusts as high as 29 mph.

    High: 82 °F

    Partly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 66. Southwest wind 9 to 15 mph, with gusts as high as 25 mph.

    Low: 66 °F

    Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 87. Southwest wind 9 to 15 mph, with gusts as high as 24 mph.

    High: 87 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 89 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 80%.

    High: 82 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.

    Low: 64 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    Showers

Detailed Forecast

Today
A 30 percent chance of showers, mainly after 5pm. Partly sunny, with a high near 82. South wind 7 to 17 mph, with gusts as high as 29 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 66. Southwest wind 9 to 15 mph, with gusts as high as 25 mph.
Monday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 87. Southwest wind 9 to 15 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 70. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Wednesday
Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.
Thursday Night
Mostly clear, with a low around 62.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Frontenac MO
 38.62°N 90.4°W (Elev. 597 ft)
Last Update:
1:26 am CDT Apr 12, 2026
Forecast Valid:
4am CDT Apr 12, 2026-6pm CDT Apr 18, 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