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

41°F

5°C

Humidity 53%
Wind Speed Vrbl 3 mph
Barometer 30.14 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 12 Jan 7:50 pm CST
Extended Forecast for

3 Miles SSE Brighton IL

  • Tonight

    Tonight: Increasing clouds, with a low around 35. South wind 6 to 9 mph.

    Low: 35 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Increasing clouds, with a high near 59. South wind 9 to 15 mph becoming west in the afternoon. Winds could gust as high as 30 mph.

    High: 59 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly before 10pm. Partly cloudy, then becoming cloudy toward daybreak, with a low around 35. West wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 35 °F

    Chance Rain
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a temperature rising to near 39 by 11am, then falling to around 31 during the remainder of the day. Breezy, with a northwest wind 15 to 23 mph, with gusts as high as 34 mph.

    High: 39 °F⇓

    Mostly Cloudy
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 16. North wind 9 to 17 mph, with gusts as high as 24 mph.

    Low: 16 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 35. South wind 6 to 9 mph.
Tuesday
Increasing clouds, with a high near 59. South wind 9 to 15 mph becoming west in the afternoon. Winds could gust as high as 30 mph.
Tuesday Night
A 30 percent chance of rain, mainly before 10pm. Partly cloudy, then becoming cloudy toward daybreak, with a low around 35. West wind 9 to 14 mph, with gusts as high as 23 mph.
Wednesday
Mostly cloudy, with a temperature rising to near 39 by 11am, then falling to around 31 during the remainder of the day. Breezy, with a northwest wind 15 to 23 mph, with gusts as high as 34 mph.
Wednesday Night
Mostly clear, with a low around 16. North wind 9 to 17 mph, with gusts as high as 24 mph.
Thursday
Mostly sunny, with a high near 30.
Thursday Night
Mostly cloudy, with a low around 24.
Friday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 41.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Partly sunny, with a high near 26.
Saturday Night
Partly cloudy, with a low around 8.
Sunday
Mostly sunny, with a high near 24.
Sunday Night
Partly cloudy, with a low around 11.
M.L.King Day
Mostly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Brighton IL
 38.99°N 90.1°W (Elev. 591 ft)
Last Update:
4:46 pm CST Jan 12, 2026
Forecast Valid:
8pm CST Jan 12, 2026-6pm CST Jan 19, 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