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

Hazardous Weather Conditions

Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Rain Fog/Mist

51°F

11°C

Humidity 96%
Wind Speed E 6 mph
Barometer 29.95 in (1014.2 mb)
Dewpoint 50°F (10°C)
Visibility 6.00 mi
Wind Chill49°F (9°C)
Last update 5 Mar 12:54 am CST
Extended Forecast for

2 Miles NW O'Fallon MO

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Areas of fog. Low around 50. Light and variable wind becoming southeast around 5 mph. Chance of precipitation is 100%.

    Low: 50 °F

    Showers and
    Areas Fog

  • Thursday

    Thursday: A 40 percent chance of showers, mainly before 7am. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 67. Northwest wind around 6 mph becoming calm in the afternoon.

    High: 67 °F

    Chance
    Showers and
    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 55. Calm wind becoming south 5 to 9 mph in the evening.

    Low: 55 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of rain and thunderstorms before noon, then a slight chance of rain between noon and 3pm, then a slight chance of rain and thunderstorms after 3pm. Partly sunny, with a high near 80. South wind 10 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.

    High: 80 °F

    Chance Rain
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 56. South wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.

    Low: 56 °F

    Chance
    T-storms then
    Rain

  • Saturday

    Saturday: A 40 percent chance of rain before noon. Partly sunny, with a high near 65.

    High: 65 °F

    Chance Rain
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Areas of fog. Low around 50. Light and variable wind becoming southeast around 5 mph. Chance of precipitation is 100%.
Thursday
A 40 percent chance of showers, mainly before 7am. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 67. Northwest wind around 6 mph becoming calm in the afternoon.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 55. Calm wind becoming south 5 to 9 mph in the evening.
Friday
A chance of rain and thunderstorms before noon, then a slight chance of rain between noon and 3pm, then a slight chance of rain and thunderstorms after 3pm. Partly sunny, with a high near 80. South wind 10 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.
Friday Night
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 56. South wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.
Saturday
A 40 percent chance of rain before noon. Partly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 77.
Monday Night
A 40 percent chance of rain and thunderstorms. Mostly clear, with a low around 59.
Tuesday
Rain and possibly a thunderstorm. High near 76. Chance of precipitation is 80%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 49. Chance of precipitation is 90%.
Wednesday
Rain likely. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.
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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:
12:26 am CST Mar 5, 2026
Forecast Valid:
12am CST Mar 5, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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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