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

68°F

20°C

Humidity 24%
Wind Speed W 10 mph
Barometer 29.68 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 18 Feb 12:50 pm CST
Extended Forecast for

Brighton IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 70. West wind 8 to 15 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 46. Southwest wind 5 to 7 mph becoming southeast in the evening.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 68. Southeast wind 7 to 12 mph becoming southwest 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 68 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 36. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 29 mph.

    Low: 36 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Friday

    Friday: Sunny, with a high near 47. Breezy, with a west wind 15 to 20 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 47 °F

    Mostly Sunny
    and Breezy
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain and snow after noon. Mostly sunny, with a high near 43. Chance of precipitation is 20%.

    High: 43 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 37. Breezy.

    High: 37 °F

    Sunny and
    Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 70. West wind 8 to 15 mph.
Tonight
Partly cloudy, with a low around 46. Southwest wind 5 to 7 mph becoming southeast in the evening.
Thursday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 68. Southeast wind 7 to 12 mph becoming southwest 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.
Thursday Night
Mostly clear, with a low around 36. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 29 mph.
Friday
Sunny, with a high near 47. Breezy, with a west wind 15 to 20 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 29 mph.
Friday Night
Partly cloudy, with a low around 28.
Saturday
A slight chance of rain and snow after noon. Mostly sunny, with a high near 43. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 23.
Sunday
Sunny, with a high near 37. Breezy.
Sunday Night
Mostly clear, with a low around 18.
Monday
Sunny, with a high near 37.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Mostly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brighton IL
 39.06°N 90.16°W (Elev. 617 ft)
Last Update:
12:25 pm CST Feb 18, 2026
Forecast Valid:
12pm CST Feb 18, 2026-6pm CST Feb 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation