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.

Light Rain

48°F

9°C

Humidity 82%
Wind Speed SW 12 mph
Barometer 29.80 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 13 Jan 9:50 pm CST
Extended Forecast for

2 Miles WSW Alton IL

  • Tonight

    Tonight: A 30 percent chance of rain before 11pm. Mostly cloudy, with a low around 37. West wind 8 to 14 mph, with gusts as high as 25 mph.

    Low: 37 °F

    Chance Rain
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: A chance of sprinkles and flurries between 7am and 9am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 31 by 5pm. Breezy, with a northwest wind 15 to 22 mph, with gusts as high as 32 mph.

    High: 39 °F⇓

    Breezy.
    Chance
    Sprinkles/Flurries
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 17. Northwest wind 8 to 14 mph, with gusts as high as 26 mph.

    Low: 17 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 34. Northwest wind 6 to 8 mph becoming south in the afternoon.

    High: 34 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 27. South wind 6 to 13 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 27 °F

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 44. Breezy.

    High: 44 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of rain before 11pm. Mostly cloudy, with a low around 37. West wind 8 to 14 mph, with gusts as high as 25 mph.
Wednesday
A chance of sprinkles and flurries between 7am and 9am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 31 by 5pm. Breezy, with a northwest wind 15 to 22 mph, with gusts as high as 32 mph.
Wednesday Night
Clear, with a low around 17. Northwest wind 8 to 14 mph, with gusts as high as 26 mph.
Thursday
Sunny, with a high near 34. Northwest wind 6 to 8 mph becoming south in the afternoon.
Thursday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 27. South wind 6 to 13 mph becoming west after midnight. Winds could gust as high as 20 mph.
Friday
Partly sunny, with a high near 44. Breezy.
Friday Night
Mostly cloudy, with a low around 19.
Saturday
Partly sunny, with a high near 26.
Saturday Night
Partly cloudy, with a low around 10.
Sunday
Mostly sunny, with a high near 31.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Sunny, with a high near 33.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Mostly sunny, with a high near 31.
Basemap Options
Click map to change the forecast location
Loading map...
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:
9:26 pm CST Jan 13, 2026
Forecast Valid:
10pm CST Jan 13, 2026-6pm CST Jan 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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