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

34°F

1°C

Humidity 76%
Wind Speed S 9 mph
Barometer 29.99 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 9 Dec 6:15 am CST
Extended Forecast for

Brighton IL

  • Today

    Today: Partly sunny, with a high near 48. Southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 48 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of rain between midnight and 3am. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 44. South wind 15 to 18 mph becoming west after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 20%.

    Low: 44 °F

    Cloudy then
    Slight Chance
    Rain

  • Wednesday

    Wednesday: Increasing clouds, with a temperature falling to around 34 by 4pm. Breezy, with a northwest wind 20 to 25 mph decreasing to 14 to 19 mph in the afternoon. Winds could gust as high as 38 mph.

    High: 42 °F⇓

    Increasing
    Clouds and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 25. Northwest wind 5 to 11 mph.

    Low: 25 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 37. Northwest wind 5 to 7 mph becoming east in the afternoon.

    High: 37 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 39.

    High: 39 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 25.

    High: 25 °F

    Mostly Cloudy

Detailed Forecast

Today
Partly sunny, with a high near 48. Southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Tonight
A slight chance of rain between midnight and 3am. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 44. South wind 15 to 18 mph becoming west after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 20%.
Wednesday
Increasing clouds, with a temperature falling to around 34 by 4pm. Breezy, with a northwest wind 20 to 25 mph decreasing to 14 to 19 mph in the afternoon. Winds could gust as high as 38 mph.
Wednesday Night
Mostly cloudy, with a low around 25. Northwest wind 5 to 11 mph.
Thursday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 37. Northwest wind 5 to 7 mph becoming east in the afternoon.
Thursday Night
Mostly cloudy, with a low around 27.
Friday
Partly sunny, with a high near 39.
Friday Night
Mostly cloudy, with a low around 15.
Saturday
Mostly cloudy, with a high near 25.
Saturday Night
Mostly cloudy, with a low around 6.
Sunday
Mostly sunny and cold, with a high near 20.
Sunday Night
Partly cloudy, with a low around 12.
Monday
A chance of rain and snow. Partly sunny, with a high near 34. Chance of precipitation is 30%.
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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:
4:01 am CST Dec 9, 2025
Forecast Valid:
6am CST Dec 9, 2025-6pm CST Dec 15, 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