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

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fog/Mist

64°F

18°C

Humidity 84%
Wind Speed SW 5 mph
Barometer 30.03 in (1016.9 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 24 Dec 9:53 pm CST
Extended Forecast for

2 Miles E O'Fallon IL

  • Tonight

    Tonight: Patchy fog. Otherwise, increasing clouds, with a low around 54. Southwest wind around 6 mph becoming light and variable after midnight.

    Low: 54 °F

    Patchy Fog

  • Christmas Day

    Christmas Day: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 66. Calm wind becoming east around 6 mph in the afternoon.

    High: 66 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59. East wind 5 to 7 mph becoming southwest after midnight.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 71. Southwest wind 6 to 10 mph becoming northwest in the afternoon.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46. Light and variable wind.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and thunderstorms, then rain likely after noon. Cloudy, with a high near 61. Chance of precipitation is 60%.

    High: 61 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 21. Blustery.

    Low: 21 °F

    Blustery.
    Chance Rain
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Patchy fog. Otherwise, increasing clouds, with a low around 54. Southwest wind around 6 mph becoming light and variable after midnight.
Christmas Day
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 66. Calm wind becoming east around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 59. East wind 5 to 7 mph becoming southwest after midnight.
Friday
Mostly sunny, with a high near 71. Southwest wind 6 to 10 mph becoming northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 46. Light and variable wind.
Saturday
Partly sunny, with a high near 67.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
A chance of rain and thunderstorms, then rain likely after noon. Cloudy, with a high near 61. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 21. Blustery.
Monday
Mostly sunny, with a high near 29.
Monday Night
Mostly clear, with a low around 18.
Tuesday
Mostly sunny, with a high near 35.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Mostly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E O'Fallon IL
 38.59°N 89.86°W (Elev. 499 ft)
Last Update:
9:31 pm CST Dec 24, 2025
Forecast Valid:
10pm CST Dec 24, 2025-6pm CST Dec 31, 2025
 
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