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

48°F

9°C

Humidity 50%
Wind Speed SW 3 mph
Barometer 29.95 in (1014.1 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 27 Feb 10:54 pm CST
Extended Forecast for

2 Miles NW O'Fallon MO

  • Tonight

    Tonight: Mostly clear, with a low around 37. North wind 3 to 7 mph.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of rain, mainly between 11am and 5pm. Mostly sunny, with a high near 64. Northeast wind 5 to 7 mph becoming south in the afternoon.

    High: 64 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before 7pm. Partly cloudy, with a low around 29. South wind 5 to 10 mph becoming north in the evening. Winds could gust as high as 20 mph.

    Low: 29 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 45. Northeast wind around 10 mph.

    High: 45 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain and snow. Low around 32. East wind around 10 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain/Snow

  • Monday

    Monday: A chance of rain and snow before noon, then a chance of rain. Mostly cloudy, with a high near 43. Chance of precipitation is 50%.

    High: 43 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Cloudy, with a low around 38. Chance of precipitation is 70%.

    Low: 38 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain, with thunderstorms also possible after noon. High near 57. Chance of precipitation is 90%.

    High: 57 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 47. Chance of precipitation is 80%.

    Low: 47 °F

    Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 37. North wind 3 to 7 mph.
Saturday
A 30 percent chance of rain, mainly between 11am and 5pm. Mostly sunny, with a high near 64. Northeast wind 5 to 7 mph becoming south in the afternoon.
Saturday Night
A 20 percent chance of rain before 7pm. Partly cloudy, with a low around 29. South wind 5 to 10 mph becoming north in the evening. Winds could gust as high as 20 mph.
Sunday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 45. Northeast wind around 10 mph.
Sunday Night
Rain and snow. Low around 32. East wind around 10 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
A chance of rain and snow before noon, then a chance of rain. Mostly cloudy, with a high near 43. Chance of precipitation is 50%.
Monday Night
Rain likely, mainly after midnight. Cloudy, with a low around 38. Chance of precipitation is 70%.
Tuesday
Rain, with thunderstorms also possible after noon. High near 57. Chance of precipitation is 90%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 47. Chance of precipitation is 80%.
Wednesday
Rain likely and possibly a thunderstorm. Cloudy, with a high near 64. Chance of precipitation is 70%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Thursday
Rain likely. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 52.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW O'Fallon MO
 38.81°N 90.74°W (Elev. 499 ft)
Last Update:
10:31 pm CST Feb 27, 2026
Forecast Valid:
11pm CST Feb 27, 2026-6pm CST Mar 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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