Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Thunderstorm Light Rain

79°F

26°C

Humidity 65%
Wind Speed S 14 G 26 mph
Barometer 29.76 in (1007.0 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 17 Apr 3:51 pm CDT
Extended Forecast for

Frontenac MO

Tornado Watch until April 17, 11:00pm
Click here for hazard details and duration
Tornado Watch
  •  
    Tornado Watch until April 17, 11:00pm

    NOW until 11:00pm Fri

    Tornado Watch

  • This Afternoon

    High: 87 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Some of the storms could be severe.  Low around 48. South wind 10 to 13 mph becoming west in the evening. Winds could gust as high as 22 mph.  Chance of precipitation is 100%.

    Low: 48 °F

    Severe
    Thunderstorms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 8am.  Cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind around 15 mph, with gusts as high as 26 mph.  Chance of precipitation is 30%.

    High: 60 °F

    Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 42. Northwest wind 5 to 10 mph becoming light and variable  after midnight. Winds could gust as high as 20 mph.

    Low: 42 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 68. West wind 5 to 11 mph, with gusts as high as 21 mph.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 54.

    Low: 54 °F

    Clear

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Some of the storms could be severe. Partly sunny, with a high near 87. South wind around 13 mph, with gusts as high as 23 mph.
Tonight
Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Some of the storms could be severe. Low around 48. South wind 10 to 13 mph becoming west in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 100%.
Saturday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 8am. Cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Saturday Night
Clear, with a low around 42. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 68. West wind 5 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 72.
Monday Night
Clear, with a low around 54.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 59.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 85.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Friday
Showers and thunderstorms likely. Partly sunny, with a high near 80. Chance of precipitation is 60%.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Frontenac MO
 38.62°N 90.4°W (Elev. 597 ft)
3:46 pm CDT Apr 17, 2026
4pm CDT Apr 17, 2026-6pm CDT Apr 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

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