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.

Fair

45°F

7°C

Humidity 71%
Wind Speed Calm
Barometer 29.96 in (1014.6 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 16 Feb 10:54 pm CST
Extended Forecast for

2 Miles NW O'Fallon MO

  • Tonight

    Tonight: Mostly cloudy, with a low around 42. South wind around 7 mph.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Cloudy, with a high near 67. South wind 6 to 15 mph, with gusts as high as 28 mph.

    High: 67 °F

    Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms between 2am and 5am. Cloudy during the early evening, then gradual clearing, with a low around 56. Breezy, with a south wind 15 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.

    Low: 56 °F

    Breezy.
    Cloudy then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 71. West wind 7 to 14 mph, with gusts as high as 25 mph.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 47. Light and variable wind becoming south around 6 mph in the evening.

    Low: 47 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers. Mostly sunny, with a high near 72.

    High: 72 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly clear, with a low around 36.

    Low: 36 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 42. South wind around 7 mph.
Tuesday
Cloudy, with a high near 67. South wind 6 to 15 mph, with gusts as high as 28 mph.
Tuesday Night
A slight chance of showers and thunderstorms between 2am and 5am. Cloudy during the early evening, then gradual clearing, with a low around 56. Breezy, with a south wind 15 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 71. West wind 7 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 47. Light and variable wind becoming south around 6 mph in the evening.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 72.
Thursday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 36.
Friday
Mostly sunny, with a high near 50.
Friday Night
Partly cloudy, with a low around 30.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 27.
Sunday
Sunny, with a high near 42.
Sunday Night
Mostly clear, with a low around 22.
Monday
Mostly sunny, with a high near 43.
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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:
8:42 pm CST Feb 16, 2026
Forecast Valid:
11pm CST Feb 16, 2026-6pm CST Feb 23, 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