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

39°F

4°C

Humidity 65%
Wind Speed E 8 mph
Barometer 30.14 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 14 Mar 7:45 am CDT
Extended Forecast for

Brighton IL

  • Today

    Today: Mostly sunny, with a high near 61. Southeast wind 9 to 16 mph, with gusts as high as 24 mph.

    High: 61 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 51. South wind 14 to 18 mph, with gusts as high as 28 mph.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of rain and thunderstorms, then rain after 1pm. High near 66. Breezy, with a south wind 21 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 90%.

    High: 66 °F

    Breezy.
    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain before 10pm, then snow, possibly mixed with rain between 10pm and 1am, then a chance of snow after 1am. Low around 19. Windy, with a southwest wind 23 to 30 mph becoming northwest in the evening. Winds could gust as high as 44 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 19 °F

    Rain/Snow and
    Windy

  • Monday

    Monday: A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 25. Blustery, with a northwest wind 25 to 29 mph, with gusts as high as 41 mph.

    High: 25 °F

    Chance Snow
    and Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11. Blustery.

    Low: 11 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 61. Southeast wind 9 to 16 mph, with gusts as high as 24 mph.
Tonight
Partly cloudy, with a low around 51. South wind 14 to 18 mph, with gusts as high as 28 mph.
Sunday
A chance of rain and thunderstorms, then rain after 1pm. High near 66. Breezy, with a south wind 21 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 90%.
Sunday Night
Rain before 10pm, then snow, possibly mixed with rain between 10pm and 1am, then a chance of snow after 1am. Low around 19. Windy, with a southwest wind 23 to 30 mph becoming northwest in the evening. Winds could gust as high as 44 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Monday
A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 25. Blustery, with a northwest wind 25 to 29 mph, with gusts as high as 41 mph.
Monday Night
Partly cloudy, with a low around 11. Blustery.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 28.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
Mostly clear, with a low around 37.
Thursday
Sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Brighton IL
 39.04°N 90.13°W (Elev. 650 ft)
Last Update:
7:31 am CDT Mar 14, 2026
Forecast Valid:
8am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation