National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Partly Cloudy

69°F

21°C

Humidity 96%
Wind Speed Calm
Barometer 30.05 in (1016.5 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 14 Oct 9:51 pm CDT
Extended Forecast for

Saint Ann MO

  • Tonight

    Tonight: Scattered showers, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 68. Light and variable wind. Chance of precipitation is 30%.

    Low: 68 °F

    Mostly Cloudy
    then
    Scattered
    Showers

  • Thursday

    Thursday: Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and noon, then a chance of showers and thunderstorms after noon. High near 80. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 80%.

    High: 80 °F

    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 1am, then a chance of showers between 1am and 2am. Increasing clouds, with a low around 50. Southwest wind 11 to 17 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%.

    Low: 50 °F

    Showers
    Likely

  • Friday

    Friday: Partly sunny, with a high near 57. Breezy, with a northwest wind 17 to 20 mph, with gusts as high as 30 mph.

    High: 57 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 43. Northwest wind 9 to 15 mph, with gusts as high as 23 mph.

    Low: 43 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
Scattered showers, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 68. Light and variable wind. Chance of precipitation is 30%.
Thursday
Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and noon, then a chance of showers and thunderstorms after noon. High near 80. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 80%.
Thursday Night
Showers and thunderstorms likely before 1am, then a chance of showers between 1am and 2am. Increasing clouds, with a low around 50. Southwest wind 11 to 17 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Friday
Partly sunny, with a high near 57. Breezy, with a northwest wind 17 to 20 mph, with gusts as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 43. Northwest wind 9 to 15 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 62.
Saturday Night
Clear, with a low around 42.
Sunday
Sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 45.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Ann MO
 38.73°N 90.4°W (Elev. 597 ft)
Last Update:
10:21 pm CDT Oct 14, 2026
Forecast Valid:
10pm CDT Oct 14, 2026-6pm CDT Oct 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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