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.

Overcast

63°F

17°C

Humidity 84%
Wind Speed N 6 mph
Barometer 29.91 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 22 Jun 5:55 am CDT
Extended Forecast for

Brighton IL

  • Today

    Today: Cloudy, with a high near 74. North wind 10 to 13 mph.

    High: 74 °F

    Cloudy

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 58. North wind 3 to 7 mph.

    Low: 58 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: Sunny, with a high near 80. East wind 3 to 5 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 61. East wind 3 to 5 mph.

    Low: 61 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. South wind around 7 mph.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Cloudy, with a high near 74. North wind 10 to 13 mph.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 58. North wind 3 to 7 mph.
Tuesday
Sunny, with a high near 80. East wind 3 to 5 mph.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 61. East wind 3 to 5 mph.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. South wind around 7 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 64.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Sunday
Mostly sunny, with a high near 92.
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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:
4:56 am CDT Jun 22, 2026
Forecast Valid:
6am CDT Jun 22, 2026-6pm CDT Jun 28, 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