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

Mount Sterling, Mount Sterling Municipal Airport (KI63)

Lat: 39.99°NLon: 90.8°WElev: 732ft.

Partly Cloudy

76°F

24°C

Humidity 55%
Wind Speed Calm
Barometer 30.22 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 23 Jun 1:55 pm CDT
Extended Forecast for

6 Miles WSW Astoria IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 78. Calm wind.

    High: 78 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Scattered showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 81. Light and variable wind becoming south southwest 5 to 8 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 40%.

    High: 81 °F

    Mostly Sunny
    then
    Scattered
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Light east northeast wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. East wind 5 to 7 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 79 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    T-storms

  • Saturday

    Saturday: Partly sunny, with a high near 85.

    High: 85 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 78. Calm wind.
Tonight
Partly cloudy, with a low around 61. Calm wind.
Wednesday
Scattered showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 81. Light and variable wind becoming south southwest 5 to 8 mph in the morning. Winds could gust as high as 16 mph. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Light and variable wind.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Light east northeast wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. East wind 5 to 7 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 67.
Saturday
Partly sunny, with a high near 85.
Saturday Night
A 40 percent chance of showers after 1am. Partly cloudy, with a low around 72.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WSW Astoria IL
 40.19°N 90.45°W (Elev. 502 ft)
Last Update:
1:56 pm CDT Jun 23, 2026
Forecast Valid:
2pm CDT Jun 23, 2026-6pm CDT Jun 29, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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