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

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

68°F

20°C

Humidity 81%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 12 Jun 3:15 am CDT
Extended Forecast for

Brighton IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 64. Southeast wind around 6 mph.

    Low: 64 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of showers and thunderstorms between 3pm and 4pm. Mostly cloudy, with a high near 80. South wind 5 to 8 mph. Chance of precipitation is 20%.

    High: 80 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers, then a chance of showers and thunderstorms after 7pm. Cloudy, with a low around 67. Southeast wind around 6 mph. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before 11am, then showers likely between 11am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 78. South wind 6 to 9 mph. Chance of precipitation is 80%.

    High: 78 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 68. South wind 5 to 7 mph. Chance of precipitation is 50%.

    Low: 68 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 82. Chance of precipitation is 40%.

    High: 82 °F

    Chance
    Showers

  • Saturday Night

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

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.

    Low: 67 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 64. Southeast wind around 6 mph.
Thursday
A slight chance of showers and thunderstorms between 3pm and 4pm. Mostly cloudy, with a high near 80. South wind 5 to 8 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers, then a chance of showers and thunderstorms after 7pm. Cloudy, with a low around 67. Southeast wind around 6 mph. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms before 11am, then showers likely between 11am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 78. South wind 6 to 9 mph. Chance of precipitation is 80%.
Friday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 68. South wind 5 to 7 mph. Chance of precipitation is 50%.
Saturday
A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 82. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 84.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Brighton IL
 39.04°N 90.13°W (Elev. 650 ft)
Last Update:
2:52 am CDT Jun 12, 2025
Forecast Valid:
3am CDT Jun 12, 2025-6pm CDT Jun 18, 2025
 
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