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

66°F

19°C

Humidity 78%
Wind Speed N 8 mph
Barometer 30.03 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 22 Jun 12:50 pm CDT
Extended Forecast for

Brighton IL

  • This Afternoon

    This Afternoon: Cloudy, with a high near 75. North wind around 10 mph.

    High: 75 °F

    Cloudy

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 57. North wind 5 to 7 mph becoming calm in the evening.

    Low: 57 °F

    Gradual
    Clearing

  • Tuesday

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

    High: 80 °F

    Sunny

  • Tuesday Night

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

    Low: 61 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 82. Southeast wind around 7 mph becoming south in the afternoon. Chance of precipitation is 50%.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.

    Low: 64 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely then
    T-storms
    Likely

Detailed Forecast

This Afternoon
Cloudy, with a high near 75. North wind around 10 mph.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 57. North wind 5 to 7 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 80. Northeast wind 3 to 5 mph.
Tuesday Night
A 20 percent chance of showers after 1am. Increasing clouds, with a low around 61. East wind 3 to 5 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 82. Southeast wind around 7 mph becoming south in the afternoon. Chance of precipitation is 50%.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Sunday
A 20 percent chance of showers and thunderstorms. 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:
1:26 pm CDT Jun 22, 2026
Forecast Valid:
1pm 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