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.

Overcast

59°F

15°C

Humidity 72%
Wind Speed W 7 mph
Barometer 29.81 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 4 Nov 3:55 pm CST
Extended Forecast for

Brighton IL

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 44. West wind 5 to 8 mph.

    Low: 44 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Increasing clouds, with a high near 60. West wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 60 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Isolated showers between 9pm and 10pm. Mostly cloudy, with a low around 43. Northwest wind 5 to 9 mph. Chance of precipitation is 20%.

    Low: 43 °F

    Isolated
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind 8 to 13 mph.

    High: 53 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. North wind 5 to 7 mph becoming calm in the evening.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 34.

    Low: 34 °F

    Clear

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 44. West wind 5 to 8 mph.
Thursday
Increasing clouds, with a high near 60. West wind 8 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Isolated showers between 9pm and 10pm. Mostly cloudy, with a low around 43. Northwest wind 5 to 9 mph. Chance of precipitation is 20%.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind 8 to 13 mph.
Friday Night
Mostly clear, with a low around 31. North wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Sunny, with a high near 58.
Sunday Night
Clear, with a low around 34.
Monday
Sunny, with a high near 63.
Monday Night
Clear, with a low around 38.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 39.
Veterans Day
Sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brighton IL
 39.04°N 90.13°W (Elev. 650 ft)
Last Update:
2:21 pm CST Nov 4, 2026
Forecast Valid:
4pm CST Nov 4, 2026-6pm CST Nov 11, 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