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NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment

After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Overcast

63°F

17°C

Humidity 78%
Wind Speed E 6 mph
Barometer 29.98 in (1014.7 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 22 May 3:51 am CDT
Extended Forecast for

Saint Charles MO

  • Today

    Today: A 40 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 70. East wind around 7 mph.

    High: 70 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 57. Northeast wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Slight Chance
    Showers then
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 81. Light and variable wind.

    High: 81 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. Light and variable wind. Chance of precipitation is 70%.

    Low: 61 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 82. Light north wind. Chance of precipitation is 50%.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Memorial Day

    Memorial Day: Partly sunny, with a high near 85.

    High: 85 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 70. East wind around 7 mph.
Tonight
A 20 percent chance of showers before 8pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 57. Northeast wind around 5 mph becoming calm in the evening.
Saturday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 81. Light and variable wind.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. Light and variable wind. Chance of precipitation is 70%.
Sunday
A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 82. Light north wind. Chance of precipitation is 50%.
Sunday Night
Mostly cloudy, with a low around 61.
Memorial Day
Partly sunny, with a high near 85.
Monday Night
Mostly cloudy, with a low around 64.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Wednesday
Showers and thunderstorms likely. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Thursday
Showers and thunderstorms likely. Partly sunny, with a high near 85. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles MO
 38.8°N 90.51°W (Elev. 499 ft)
Last Update:
2:46 am CDT May 22, 2026
Forecast Valid:
4am CDT May 22, 2026-6pm CDT May 28, 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