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

43°F

6°C

Humidity 86%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 7 May 1:55 am CDT
Extended Forecast for

Brighton IL

  • Overnight

    Overnight: Clear early, then becoming mostly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 65. Light southwest wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 24 mph.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47. South wind around 8 mph.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 70. South wind 7 to 10 mph becoming west in the afternoon. Chance of precipitation is 70%.

    High: 70 °F

    Mostly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am. Low around 48. West wind 3 to 6 mph. Chance of precipitation is 80%.

    Low: 48 °F

    Showers

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 66.

    High: 66 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear early, then becoming mostly cloudy, with a low around 39. Calm wind.
Thursday
Sunny, with a high near 65. Light southwest wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 24 mph.
Thursday Night
Mostly clear, with a low around 47. South wind around 8 mph.
Friday
A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 70. South wind 7 to 10 mph becoming west in the afternoon. Chance of precipitation is 70%.
Friday Night
Showers and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am. Low around 48. West wind 3 to 6 mph. Chance of precipitation is 80%.
Saturday
Sunny, with a high near 78.
Saturday Night
A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 53.
Sunday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 69.
Monday Night
A 20 percent chance of showers. Mostly clear, with a low around 49.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 76.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Brighton IL
 39.04°N 90.13°W (Elev. 650 ft)
Last Update:
1:25 am CDT May 7, 2026
Forecast Valid:
2am CDT May 7, 2026-6pm CDT May 13, 2026
 
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