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

59°F

15°C

Humidity 55%
Wind Speed SE 7 mph
Barometer 29.98 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 14 May 11:35 pm CDT
Extended Forecast for

3 Miles WSW Brighton IL

  • Tonight

    Tonight: A chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 54. Southeast wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 54 °F

    Showers
    Likely

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 82. South wind 13 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely then
    Mostly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 64. South wind 9 to 11 mph.

    Low: 64 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 82. South wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 64. South wind around 9 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 88. Breezy.

    High: 88 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. Breezy.

    High: 88 °F

    Breezy.
    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Breezy.

    Low: 69 °F

    Chance
    T-storms and
    Breezy

Detailed Forecast

Tonight
A chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 54. Southeast wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 82. South wind 13 to 15 mph, with gusts as high as 23 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 64. South wind 9 to 11 mph.
Saturday
A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 82. South wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 64. South wind around 9 mph. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 88. Breezy.
Sunday Night
Mostly clear, with a low around 68.
Monday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. Breezy.
Monday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Breezy.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 77.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Thursday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Brighton IL
 39.02°N 90.19°W (Elev. 600 ft)
Last Update:
10:21 pm CDT May 14, 2026
Forecast Valid:
11pm CDT May 14, 2026-6pm CDT May 21, 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