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.

Fair

63°F

17°C

Humidity 78%
Wind Speed S 7 mph
Barometer 29.93 in (1012.6 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 23 Apr 4:51 am CDT
Extended Forecast for

Frontenac MO

  • Today

    Today: Sunny, with a high near 84. South wind 6 to 15 mph, with gusts as high as 28 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 4am. Partly cloudy, with a low around 63. South wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    Low: 63 °F

    Partly Cloudy
    then T-storms
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 74. Southwest wind around 9 mph becoming west in the afternoon. Chance of precipitation is 80%.

    High: 74 °F

    T-storms then
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. North wind around 6 mph.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 77. Northeast wind 5 to 7 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75. Chance of precipitation is 30%.

    High: 75 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.

    Low: 62 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 78. Chance of precipitation is 80%.

    High: 78 °F

    Showers

Detailed Forecast

Today
Sunny, with a high near 84. South wind 6 to 15 mph, with gusts as high as 28 mph.
Tonight
Showers and thunderstorms likely, mainly after 4am. Partly cloudy, with a low around 63. South wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Friday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 74. Southwest wind around 9 mph becoming west in the afternoon. Chance of precipitation is 80%.
Friday Night
Partly cloudy, with a low around 52. North wind around 6 mph.
Saturday
Sunny, with a high near 77. Northeast wind 5 to 7 mph.
Saturday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 55.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.
Monday
Showers and possibly a thunderstorm. High near 78. Chance of precipitation is 80%.
Monday Night
A 30 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 52.
Tuesday
Sunny, with a high near 72.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Frontenac MO
 38.62°N 90.4°W (Elev. 597 ft)
Last Update:
3:16 am CDT Apr 23, 2026
Forecast Valid:
5am CDT Apr 23, 2026-6pm CDT Apr 29, 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