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.

Fair

66°F

19°C

Humidity 43%
Wind Speed S 12 mph
Barometer 30.11 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 14 May 11:45 am CDT
Extended Forecast for

5 Miles N Aviston IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 72. South wind 3 to 5 mph.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Increasing clouds, with a low around 53. Southeast wind 6 to 8 mph.

    Low: 53 °F

    Mostly Clear
    then Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms likely before 10am, then a slight chance of showers between 10am and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 79. South wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 66. South wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 66 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7am. Partly sunny, with a high near 82. Southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Breezy.

    High: 87 °F

    Breezy. Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 72. South wind 3 to 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Increasing clouds, with a low around 53. Southeast wind 6 to 8 mph.
Friday
Showers and thunderstorms likely before 10am, then a slight chance of showers between 10am and 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 79. South wind 10 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 66. South wind 8 to 10 mph, with gusts as high as 20 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7am. Partly sunny, with a high near 82. Southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 69.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Breezy.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 50%.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 81. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles N Aviston IL
 38.67°N 89.6°W (Elev. 476 ft)
Last Update:
10:46 am CDT May 14, 2026
Forecast Valid:
12pm CDT May 14, 2026-6pm CDT May 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation