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Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

16°C

60°F

Humidity 77%
Wind Speed E 7 km/h
Barometer 30.16 in
Dewpoint 12°C (53°F)
Visibility 16 km
Last update 31 May 6:35 am CDT
Extended Forecast for

Alton IL

  • Today

    Today: Mostly cloudy, with a high near 27. Southeast wind 5 to 10 km/h increasing to 18 to 23 km/h in the morning.

    High: 27 °C

    Mostly Cloudy

  • Tonight

    Tonight: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 18. East wind 11 to 14 km/h, with gusts as high as 34 km/h. Chance of precipitation is 90%.

    Low: 18 °C

    Chance
    Showers then
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. High near 23. Southeast wind around 14 km/h becoming south in the afternoon. Chance of precipitation is 80%.

    High: 23 °C

    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 17. Northwest wind 8 to 13 km/h becoming light after midnight.

    Low: 17 °C

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 28. Calm wind becoming southeast 5 to 10 km/h in the morning.

    High: 28 °C

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 19.

    Low: 19 °C

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 29. Chance of precipitation is 70%.

    High: 29 °C

    Showers
    Likely

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.

    Low: 21 °C

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 29.

    High: 29 °C

    Chance
    T-storms

Detailed Forecast

Today
Mostly cloudy, with a high near 27. Southeast wind 5 to 10 km/h increasing to 18 to 23 km/h in the morning.
Tonight
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 18. East wind 11 to 14 km/h, with gusts as high as 34 km/h. Chance of precipitation is 90%.
Saturday
Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. High near 23. Southeast wind around 14 km/h becoming south in the afternoon. Chance of precipitation is 80%.
Saturday Night
Partly cloudy, with a low around 17. Northwest wind 8 to 13 km/h becoming light after midnight.
Sunday
Mostly sunny, with a high near 28. Calm wind becoming southeast 5 to 10 km/h in the morning.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 19.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 29. Chance of precipitation is 70%.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 29.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 29.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 18.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 28.
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ABOUT THIS FORECAST

 
Point Forecast:
Alton IL
 38.91°N 90.16°W (Elev. 505 m)
Last Update:
5:22 am CDT May 31, 2024
Forecast Valid:
6am CDT May 31, 2024-6pm CDT Jun 6, 2024
 
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Additional Resources

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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