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.

Fog/Mist

39°F

4°C

Humidity 93%
Wind Speed SE 7 mph
Barometer 30.13 in (1021.1 mb)
Dewpoint 37°F (3°C)
Visibility 3.00 mi
Wind Chill34°F (1°C)
Last update 3 Mar 1:51 am CST
Extended Forecast for

Saint Charles MO

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Patchy fog after 3am. Low around 38. East wind around 5 mph. Chance of precipitation is 100%.

    Low: 38 °F

    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. Patchy fog between 7am and 9am. High near 56. Light and variable wind becoming northeast around 6 mph in the morning. Chance of precipitation is 90%.

    High: 56 °F

    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 48. Northeast wind 5 to 7 mph. Chance of precipitation is 80%.

    Low: 48 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 62. East wind 5 to 7 mph becoming southwest in the afternoon. Chance of precipitation is 90%.

    High: 62 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 54. Southwest wind around 6 mph. Chance of precipitation is 90%.

    Low: 54 °F

    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before noon, then a chance of showers. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.

    High: 68 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.

    Low: 57 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, then showers and possibly a thunderstorm after midnight. Low around 59. Chance of precipitation is 80%.

    Low: 59 °F

    Chance
    Showers then
    Showers

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Patchy fog after 3am. Low around 38. East wind around 5 mph. Chance of precipitation is 100%.
Tuesday
Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. Patchy fog between 7am and 9am. High near 56. Light and variable wind becoming northeast around 6 mph in the morning. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 48. Northeast wind 5 to 7 mph. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 62. East wind 5 to 7 mph becoming southwest in the afternoon. Chance of precipitation is 90%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 54. Southwest wind around 6 mph. Chance of precipitation is 90%.
Thursday
Showers likely and possibly a thunderstorm before noon, then a chance of showers. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.
Thursday Night
A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 50%.
Friday Night
A chance of showers, then showers and possibly a thunderstorm after midnight. Low around 59. Chance of precipitation is 80%.
Saturday
A 50 percent chance of showers and thunderstorms, mainly before noon. Mostly cloudy, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 44.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 50.
Monday
A 20 percent chance of showers. Sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles MO
 38.78°N 90.51°W (Elev. 597 ft)
Last Update:
12:26 am CST Mar 3, 2026
Forecast Valid:
2am CST Mar 3, 2026-6pm CDT Mar 9, 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