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

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Mostly Cloudy

43°F

6°C

Humidity 65%
Wind Speed N 9 G 21 mph
Barometer 30.40 in (1029.5 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 27 Mar 9:54 am CDT
Extended Forecast for

2 Miles NW O'Fallon MO

  • Today

    Today: Partly sunny, with a high near 53. North wind around 15 mph, with gusts as high as 28 mph.

    High: 53 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 28. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56. Calm wind becoming south 5 to 7 mph in the morning.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 42. South wind around 8 mph.

    Low: 42 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 70. South wind 7 to 10 mph.

    High: 70 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 1pm. Partly sunny, with a high near 85.

    High: 85 °F

    Chance Rain

Detailed Forecast

Today
Partly sunny, with a high near 53. North wind around 15 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 28. North wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 56. Calm wind becoming south 5 to 7 mph in the morning.
Saturday Night
Partly cloudy, with a low around 42. South wind around 8 mph.
Sunday
Partly sunny, with a high near 70. South wind 7 to 10 mph.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 83.
Monday Night
A 20 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 65.
Tuesday
A 30 percent chance of rain, mainly after 1pm. Partly sunny, with a high near 85.
Tuesday Night
A chance of rain, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 50%.
Wednesday
A 50 percent chance of rain and thunderstorms. Partly sunny, with a high near 76.
Wednesday Night
Rain and thunderstorms likely. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Thursday
Rain and thunderstorms likely. Mostly cloudy, with a high near 67. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW O'Fallon MO
 38.81°N 90.74°W (Elev. 499 ft)
Last Update:
7:36 am CDT Mar 27, 2026
Forecast Valid:
10am CDT Mar 27, 2026-6pm CDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation