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

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

54°F

12°C

Humidity 75%
Wind Speed Calm
Barometer 29.91 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 21 Mar 2:15 am CDT
Extended Forecast for

Roxana IL

  • Overnight

    Overnight: Mostly clear, with a low around 51. Light east wind.

    Low: 51 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88. Calm wind becoming south 5 to 7 mph in the morning.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. South wind 6 to 8 mph.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 88. South wind 8 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 88 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 38. Breezy, with a north wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph.

    Low: 38 °F

    Slight Chance
    Showers and
    Breezy

  • Monday

    Monday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 1am. Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 51. Light east wind.
Saturday
Sunny, with a high near 88. Calm wind becoming south 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 62. South wind 6 to 8 mph.
Sunday
Increasing clouds, with a high near 88. South wind 8 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 38. Breezy, with a north wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph.
Monday
Sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Partly sunny, with a high near 62.
Tuesday Night
A 20 percent chance of rain after 1am. Partly cloudy, with a low around 44.
Wednesday
A 20 percent chance of rain before 1pm. Mostly cloudy, with a high near 71.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 55.
Thursday
A 20 percent chance of rain. Sunny, with a high near 80.
Thursday Night
A 40 percent chance of rain and thunderstorms. Partly cloudy, with a low around 45.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roxana IL
 38.84°N 90.05°W (Elev. 436 ft)
Last Update:
1:26 am CDT Mar 21, 2026
Forecast Valid:
2am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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