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

75°F

24°C

Humidity 97%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 74°F (23°C)
Visibility 7.00 mi
Last update 16 Aug 10:55 pm CDT
Extended Forecast for

Bunker Hill IL

Heat Advisory August 16, 11:17pm until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 16, 11:17pm until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Tonight

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 96. Heat index values as high as 105. Calm wind.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 95. Heat index values as high as 103. Calm wind becoming south around 6 mph in the morning.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. Light southeast wind.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 92.

    High: 92 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 74. Calm wind.
Sunday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 96. Heat index values as high as 105. Calm wind.
Sunday Night
Partly cloudy, with a low around 74. Calm wind.
Monday
Sunny, with a high near 95. Heat index values as high as 103. Calm wind becoming south around 6 mph in the morning.
Monday Night
Mostly clear, with a low around 75. Light southeast wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 92.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 71.
Wednesday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Bunker Hill IL
 39.03°N 89.96°W (Elev. 643 ft)
Last Update:
5:56 pm CDT Aug 16, 2025
Forecast Valid:
11pm CDT Aug 16, 2025-6pm CDT Aug 23, 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