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.

Fog/Mist

48°F

9°C

Humidity 92%
Wind Speed N 3 mph
Barometer 30.12 in
Dewpoint 46°F (8°C)
Visibility 5.00 mi
Last update 19 Nov 3:15 am CST
Extended Forecast for

Brighton IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 44. Light north wind.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 55. North wind around 5 mph becoming calm in the morning.

    High: 55 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46. Calm wind becoming southeast around 5 mph after midnight.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain likely. Cloudy, with a high near 59. Southeast wind 5 to 9 mph. Chance of precipitation is 70%.

    High: 59 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely, mainly after midnight. Cloudy, with a low around 52. Light and variable wind becoming east around 6 mph after midnight. Chance of precipitation is 70%.

    Low: 52 °F

    Rain Likely

  • Friday

    Friday: Rain. High near 60. Chance of precipitation is 80%.

    High: 60 °F

    Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 44. Light north wind.
Wednesday
Mostly cloudy, with a high near 55. North wind around 5 mph becoming calm in the morning.
Wednesday Night
Mostly cloudy, with a low around 46. Calm wind becoming southeast around 5 mph after midnight.
Thursday
Rain likely. Cloudy, with a high near 59. Southeast wind 5 to 9 mph. Chance of precipitation is 70%.
Thursday Night
Rain likely, mainly after midnight. Cloudy, with a low around 52. Light and variable wind becoming east around 6 mph after midnight. Chance of precipitation is 70%.
Friday
Rain. High near 60. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 41.
Monday
A 20 percent chance of rain. Partly sunny, with a high near 60.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 43.
Tuesday
A 40 percent chance of rain. Partly sunny, with a high near 56.
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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:
3:16 am CST Nov 19, 2025
Forecast Valid:
3am CST Nov 19, 2025-6pm CST Nov 25, 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