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.

A Few Clouds

45°F

7°C

Humidity 66%
Wind Speed E 5 mph
Barometer 29.88 in (1012.5 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 6 Dec 6:54 pm CST
Extended Forecast for

2 Miles NNE O'Fallon MO

  • Tonight

    Tonight: A slight chance of rain between 11pm and 2am. Cloudy, with a steady temperature around 38. Southeast wind 3 to 7 mph. Chance of precipitation is 20%.

    Low: 38 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A slight chance of drizzle before 11am. Cloudy, with a temperature rising to near 37 by 10am, then falling to around 30 during the remainder of the day. Light and variable wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 37 °F⇓

    Slight Chance
    Drizzle then
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 18. North wind 6 to 11 mph.

    Low: 18 °F

    Mostly Cloudy

  • Monday

    Monday: Cloudy through mid morning, then gradual clearing, with a high near 33. North wind around 5 mph becoming calm in the morning.

    High: 33 °F

    Gradual
    Clearing

  • Monday Night

    Monday Night: Partly cloudy, with a low around 25. Light and variable wind becoming southwest 5 to 10 mph in the evening. Winds could gust as high as 20 mph.

    Low: 25 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Tonight
A slight chance of rain between 11pm and 2am. Cloudy, with a steady temperature around 38. Southeast wind 3 to 7 mph. Chance of precipitation is 20%.
Sunday
A slight chance of drizzle before 11am. Cloudy, with a temperature rising to near 37 by 10am, then falling to around 30 during the remainder of the day. Light and variable wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 18. North wind 6 to 11 mph.
Monday
Cloudy through mid morning, then gradual clearing, with a high near 33. North wind around 5 mph becoming calm in the morning.
Monday Night
Partly cloudy, with a low around 25. Light and variable wind becoming southwest 5 to 10 mph in the evening. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 47.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 27.
Thursday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 37.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 26.
Friday Night
Partly cloudy, with a low around 9.
Saturday
Mostly sunny, with a high near 23.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE O'Fallon MO
 38.81°N 90.71°W (Elev. 502 ft)
Last Update:
4:56 pm CST Dec 6, 2025
Forecast Valid:
7pm CST Dec 6, 2025-6pm CST Dec 13, 2025
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation