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.

Partly Cloudy

95°F

35°C

Humidity 67%
Wind Speed SW 10 mph
Barometer 29.91 in
Dewpoint 82°F (28°C)
Visibility 10.00 mi
Heat Index120°F (49°C)
Last update 26 Jul 1:45 pm CDT
Extended Forecast for

Sawyerville IL

Extreme Heat Warning until July 27, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning until July 27, 09:00pm

    NOW until 9:00pm Mon

    Extreme Heat Warning

  • This Afternoon

    High: 93 °F

    Scattered
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 30%.

    Low: 75 °F

    Scattered
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 94. Heat index values as high as 109. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. Southwest wind 5 to 7 mph becoming northwest after midnight.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. North wind 6 to 10 mph.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 93. Heat index values as high as 113. West wind around 5 mph. Chance of precipitation is 30%.
Tonight
Scattered showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 30%.
Monday
Sunny, with a high near 94. Heat index values as high as 109. Light south wind becoming southwest 5 to 10 mph in the morning.
Monday Night
Mostly clear, with a low around 76. Southwest wind 5 to 7 mph becoming northwest after midnight.
Tuesday
Sunny, with a high near 89. North wind 6 to 10 mph.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Sunny, with a high near 87.
Thursday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 82.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sawyerville IL
 39.07°N 89.81°W (Elev. 600 ft)
Last Update:
1:26 pm CDT Jul 26, 2026
Forecast Valid:
2pm CDT Jul 26, 2026-6pm CDT Aug 1, 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