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

59°F

15°C

Humidity 68%
Wind Speed W 7 mph
Barometer 29.89 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 10 Feb 9:50 am CST
Extended Forecast for

2 Miles WSW Alton IL

  • Today

    Today: Sunny, with a high near 58. North wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. North wind 6 to 11 mph, with gusts as high as 26 mph.

    Low: 30 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 51. Northwest wind 5 to 7 mph.

    High: 51 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 32. Northwest wind around 5 mph becoming calm in the evening.

    Low: 32 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 20 percent chance of rain after noon. Cloudy, with a high near 48. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 48 °F

    Cloudy then
    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of rain, mainly after noon. Cloudy, with a high near 49.

    High: 49 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 58. North wind 7 to 13 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 30. North wind 6 to 11 mph, with gusts as high as 26 mph.
Wednesday
Sunny, with a high near 51. Northwest wind 5 to 7 mph.
Wednesday Night
Increasing clouds, with a low around 32. Northwest wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of rain after noon. Cloudy, with a high near 48. Calm wind becoming southeast 5 to 8 mph in the morning.
Thursday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 50.
Friday Night
Mostly cloudy, with a low around 35.
Saturday
A 40 percent chance of rain, mainly after noon. Cloudy, with a high near 49.
Saturday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Sunday
A 40 percent chance of rain. Mostly sunny, with a high near 52.
Sunday Night
Mostly clear, with a low around 34.
Washington's Birthday
Mostly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
Last Update:
9:36 am CST Feb 10, 2026
Forecast Valid:
10am CST Feb 10, 2026-6pm CST Feb 16, 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