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

Hazardous Weather Conditions

Current conditions at

Mount Sterling, Mount Sterling Municipal Airport (KI63)

Lat: 39.99°NLon: 90.8°WElev: 732ft.

Fair

96°F

36°C

Humidity 41%
Wind Speed SW 5 mph
Barometer 29.97 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 1 Sep 4:55 pm CDT
Extended Forecast for

3 Miles E Augusta IL

Heat Advisory September 1, 05:16pm until September 3, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 1, 05:16pm until September 3, 07:00pm

    NOW until 7:00pm Thu

    Heat Advisory

  • Tonight

    Low: 77 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Heat index values as high as 103. Southwest wind 7 to 11 mph, with gusts as high as 17 mph.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 78. South southwest wind 5 to 7 mph, with gusts as high as 16 mph.

    Low: 78 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 95. Heat index values as high as 103. Southwest wind 6 to 8 mph, with gusts as high as 15 mph.

    High: 95 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. South wind 3 to 6 mph.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 95. Southwest wind around 6 mph.

    High: 95 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. Light south southeast wind.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 95.

    High: 95 °F

    Hot

Detailed Forecast

Tonight
Clear, with a low around 77. South wind 3 to 7 mph. Winds could gust as high as 15 mph.
Wednesday
Sunny and hot, with a high near 97. Heat index values as high as 103. Southwest wind 7 to 11 mph, with gusts as high as 17 mph.
Wednesday Night
Mostly clear, with a low around 78. South southwest wind 5 to 7 mph, with gusts as high as 16 mph.
Thursday
Sunny and hot, with a high near 95. Heat index values as high as 103. Southwest wind 6 to 8 mph, with gusts as high as 15 mph.
Thursday Night
Mostly clear, with a low around 77. South wind 3 to 6 mph.
Friday
Sunny and hot, with a high near 95. Southwest wind around 6 mph.
Friday Night
Mostly clear, with a low around 74. Light south southeast wind.
Saturday
Mostly sunny and hot, with a high near 95.
Saturday Night
Partly cloudy, with a low around 72.
Sunday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 90.
Sunday Night
A chance of showers. Partly cloudy, with a low around 69.
Labor Day
Mostly sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Augusta IL
 40.23°N 90.91°W (Elev. 600 ft)
Last Update:
4:36 pm CDT Sep 1, 2026
Forecast Valid:
5pm CDT Sep 1, 2026-6pm CDT Sep 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation