National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fog/Mist

74°F

23°C

Humidity 96%
Wind Speed S 3 mph
Barometer 29.69 in
Dewpoint 73°F (23°C)
Visibility 5.00 mi
Last update 1 Aug 12:35 am CDT
Extended Forecast for

3 Miles W Bunker Hill IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 67. South wind around 10 mph becoming west.

    Low: 67 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 77. Southwest wind 7 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

    High: 77 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 10pm, then a chance of showers. Cloudy, with a low around 65. North wind 16 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    Low: 65 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 79. North wind 15 to 17 mph, with gusts as high as 24 mph.

    High: 79 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62. North wind 5 to 11 mph.

    Low: 62 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 67. South wind around 10 mph becoming west.
Saturday
A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 77. Southwest wind 7 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm before 10pm, then a chance of showers. Cloudy, with a low around 65. North wind 16 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 79. North wind 15 to 17 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 62. North wind 5 to 11 mph.
Monday
Mostly sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 87.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Bunker Hill IL
 39.03°N 90.01°W (Elev. 650 ft)
Last Update:
12:41 am CDT Aug 1, 2026
Forecast Valid:
12am CDT Aug 1, 2026-6pm CDT Aug 7, 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