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

90°F

32°C

Humidity 29%
Wind Speed W 12 mph
Barometer 29.68 in (1004.0 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 26 Mar 5:51 pm CDT
Extended Forecast for

Frontenac MO

  • Tonight

    Tonight: Showers and thunderstorms. Low around 40. Southwest wind 9 to 16 mph becoming northeast after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%.

    Low: 40 °F

    Chance
    T-storms then
    Showers

  • Friday

    Friday: Showers likely, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 54. North wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    High: 54 °F

    Showers
    Likely then
    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 33. North wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 57. Light and variable wind becoming southeast 5 to 7 mph in the morning.

    High: 57 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 42. South wind around 7 mph.

    Low: 42 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Showers and thunderstorms. Low around 40. Southwest wind 9 to 16 mph becoming northeast after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%.
Friday
Showers likely, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 54. North wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Friday Night
Mostly clear, with a low around 33. North wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 57. Light and variable wind becoming southeast 5 to 7 mph in the morning.
Saturday Night
Partly cloudy, with a low around 42. South wind around 7 mph.
Sunday
Partly sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Mostly sunny, with a high near 86.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 65.
Tuesday
A 20 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 88.
Tuesday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 60.
Wednesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 79.
Wednesday Night
Rain and thunderstorms likely. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Thursday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. 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:
5:41 pm CDT Mar 26, 2026
Forecast Valid:
6pm CDT Mar 26, 2026-6pm CDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation