Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

35°F

2°C

Humidity 91%
Wind Speed Calm
Barometer 29.95 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 27 Feb 2:15 am CST
Extended Forecast for

2 Miles WSW Alton IL

Red Flag Warning February 27, 12:00pm until February 27, 06:00pm
Click here for hazard details and duration
Red Flag Warning
  • Overnight

    Overnight: Mostly clear, with a low around 36. Light and variable wind.

    Low: 36 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 72. Light and variable wind becoming southwest 11 to 16 mph in the morning. Winds could gust as high as 25 mph.

    High: 72 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 39. Southwest wind 5 to 8 mph becoming northeast after midnight.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of rain after noon.  Mostly sunny, with a high near 65. Northeast wind 5 to 9 mph becoming south in the afternoon.

    High: 65 °F

    Mostly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30. North wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of rain and snow between noon and 3pm, then a slight chance of rain after 3pm.  Mostly cloudy, with a high near 46. Chance of precipitation is 20%.

    High: 46 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow.  Low around 31. Chance of precipitation is 80%.

    Low: 31 °F

    Rain/Snow

  • Monday

    Monday: A chance of rain and snow before noon, then a slight chance of rain.  Mostly cloudy, with a high near 44. Chance of precipitation is 30%.

    High: 44 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: A 50 percent chance of rain.  Cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 36. Light and variable wind.
Friday
Sunny, with a high near 72. Light and variable wind becoming southwest 11 to 16 mph in the morning. Winds could gust as high as 25 mph.
Friday Night
Mostly clear, with a low around 39. Southwest wind 5 to 8 mph becoming northeast after midnight.
Saturday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 65. Northeast wind 5 to 9 mph becoming south in the afternoon.
Saturday Night
Partly cloudy, with a low around 30. North wind 9 to 11 mph, with gusts as high as 20 mph.
Sunday
A slight chance of rain and snow between noon and 3pm, then a slight chance of rain after 3pm. Mostly cloudy, with a high near 46. Chance of precipitation is 20%.
Sunday Night
Rain and snow. Low around 31. Chance of precipitation is 80%.
Monday
A chance of rain and snow before noon, then a slight chance of rain. Mostly cloudy, with a high near 44. Chance of precipitation is 30%.
Monday Night
A 50 percent chance of rain. Cloudy, with a low around 35.
Tuesday
Rain. High near 52. Chance of precipitation is 80%.
Tuesday Night
Rain and thunderstorms likely. Cloudy, with a low around 41. Chance of precipitation is 70%.
Wednesday
Rain likely. Cloudy, with a high near 62. Chance of precipitation is 60%.
Wednesday Night
Rain likely. Cloudy, with a low around 50. Chance of precipitation is 70%.
Thursday
Rain likely. Mostly cloudy, with a high near 67. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
1:16 am CST Feb 27, 2026
2am CST Feb 27, 2026-6pm CST Mar 5, 2026
 
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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