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.

Overcast

76°F

24°C

Humidity 62%
Wind Speed S 14 mph
Barometer 29.91 in (1011.6 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 4 Apr 12:51 am CDT
Extended Forecast for

Frontenac MO

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 60. South wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

    Low: 60 °F

    Showers

  • Saturday

    Saturday: Showers, mainly before 9am. Temperature falling to around 54 by 1pm. West wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    High: 64 °F⇓

    Showers then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. Northwest wind 8 to 14 mph, with gusts as high as 23 mph.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 60. Northwest wind 8 to 10 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 41. West wind 3 to 6 mph.

    Low: 41 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 60. South wind around 11 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Saturday
Showers, mainly before 9am. Temperature falling to around 54 by 1pm. West wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Saturday Night
Partly cloudy, with a low around 40. Northwest wind 8 to 14 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 60. Northwest wind 8 to 10 mph.
Sunday Night
Clear, with a low around 41. West wind 3 to 6 mph.
Monday
Sunny, with a high near 62.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 38.
Tuesday
Partly sunny, with a high near 54.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 77.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 56.
Friday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
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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:
1:25 am CDT Apr 4, 2026
Forecast Valid:
1am CDT Apr 4, 2026-6pm CDT Apr 10, 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