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

66°F

19°C

Humidity 59%
Wind Speed N 10 G 31 mph
Barometer 29.73 in (1006.1 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 5 May 1:51 am CDT
Extended Forecast for

Frontenac MO

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 55. Northwest wind around 7 mph. Chance of precipitation is 80%.

    Low: 55 °F

    Showers

  • Tuesday

    Tuesday: Showers and thunderstorms before 3pm, then showers and possibly a thunderstorm, mainly after 3pm. High near 56. Northeast wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    High: 56 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 2am, then a slight chance of showers between 2am and 3am. Low around 45. Northeast wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.

    Low: 45 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly between 7am and 1pm. Partly sunny, with a high near 60. North wind 6 to 8 mph.

    High: 60 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41. North wind 3 to 6 mph.

    Low: 41 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 76.

    High: 76 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 55. Northwest wind around 7 mph. Chance of precipitation is 80%.
Tuesday
Showers and thunderstorms before 3pm, then showers and possibly a thunderstorm, mainly after 3pm. High near 56. Northeast wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm before 2am, then a slight chance of showers between 2am and 3am. Low around 45. Northeast wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.
Wednesday
A 30 percent chance of showers, mainly between 7am and 1pm. Partly sunny, with a high near 60. North wind 6 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 41. North wind 3 to 6 mph.
Thursday
Sunny, with a high near 66.
Thursday Night
Mostly clear, with a low around 47.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 76.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 52.
Saturday
Sunny, with a high near 79.
Saturday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 75. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 50.
Monday
Sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Frontenac MO
 38.62°N 90.43°W (Elev. 597 ft)
Last Update:
1:25 am CDT May 5, 2026
Forecast Valid:
2am CDT May 5, 2026-6pm CDT May 11, 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