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.

Rain

60°F

16°C

Humidity 93%
Wind Speed S 13 mph
Barometer 29.85 in (1010.1 mb)
Dewpoint 58°F (14°C)
Visibility 8.00 mi
Last update 7 Mar 3:51 am CST
Extended Forecast for

Frontenac MO

  • Overnight

    Overnight: Rain and possibly a thunderstorm. Low around 60. Southwest wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.

    Low: 60 °F

    Rain

  • Saturday

    Saturday: Rain, mainly before 8am. Temperature rising to near 65 by 10am, then falling to around 56 during the remainder of the day. Southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%.

    High: 65 °F⇓

    Rain then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. Northwest wind 5 to 9 mph becoming calm after midnight.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 67. Southwest wind 3 to 8 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 49. South wind around 7 mph.

    Low: 49 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain and thunderstorms after midnight. Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear
    then Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after noon. High near 80. Chance of precipitation is 80%.

    High: 80 °F

    Chance Rain
    then Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 53. Chance of precipitation is 90%.

    Low: 53 °F

    Rain

Detailed Forecast

Overnight
Rain and possibly a thunderstorm. Low around 60. Southwest wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
Saturday
Rain, mainly before 8am. Temperature rising to near 65 by 10am, then falling to around 56 during the remainder of the day. Southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%.
Saturday Night
Partly cloudy, with a low around 39. Northwest wind 5 to 9 mph becoming calm after midnight.
Sunday
Sunny, with a high near 67. Southwest wind 3 to 8 mph.
Sunday Night
Clear, with a low around 49. South wind around 7 mph.
Monday
Sunny, with a high near 80.
Monday Night
A 30 percent chance of rain and thunderstorms after midnight. Mostly clear, with a low around 61.
Tuesday
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after noon. High near 80. Chance of precipitation is 80%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 53. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm before noon, then a chance of rain. High near 64. Chance of precipitation is 80%.
Wednesday Night
Partly cloudy, with a low around 36.
Thursday
Sunny, with a high near 56.
Thursday Night
Mostly cloudy, with a low around 42.
Friday
Mostly cloudy, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
Frontenac MO
 38.65°N 90.4°W (Elev. 558 ft)
Last Update:
3:31 am CST Mar 7, 2026
Forecast Valid:
4am CST Mar 7, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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