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

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Mostly Cloudy

59°F

15°C

Humidity 63%
Wind Speed E 10 mph
Barometer 30.37 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 11 Apr 10:45 am CDT
Extended Forecast for

2 Miles WSW Alton IL

  • Today

    Today: A 20 percent chance of showers after 3pm. Partly sunny, with a high near 73. Southeast wind 8 to 10 mph.

    High: 73 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 7pm. Partly cloudy, with a low around 60. Southeast wind around 9 mph.

    Low: 60 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm. Increasing clouds, with a high near 82. South wind 9 to 18 mph, with gusts as high as 31 mph.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. South wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely

Detailed Forecast

Today
A 20 percent chance of showers after 3pm. Partly sunny, with a high near 73. Southeast wind 8 to 10 mph.
Tonight
A 30 percent chance of showers, mainly before 7pm. Partly cloudy, with a low around 60. Southeast wind around 9 mph.
Sunday
A 30 percent chance of showers after 1pm. Increasing clouds, with a high near 82. South wind 9 to 18 mph, with gusts as high as 31 mph.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. South wind 10 to 15 mph, with gusts as high as 23 mph.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Wednesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.
Thursday
Showers and thunderstorms likely. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
Last Update:
8:26 am CDT Apr 11, 2026
Forecast Valid:
11am CDT Apr 11, 2026-6pm CDT Apr 17, 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