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

87°F

31°C

Humidity 44%
Wind Speed E 5 mph
Barometer 30.16 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 3 Oct 2:35 pm CDT
Extended Forecast for

Frederick IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 89. South southwest wind around 8 mph.

    High: 89 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 63. Light south wind.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88. South wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 60. South wind around 7 mph, with gusts as high as 15 mph.

    Low: 60 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 87. South wind 6 to 14 mph, with gusts as high as 20 mph.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 61. South southeast wind 5 to 7 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the morning.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 78.

    High: 78 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 89. South southwest wind around 8 mph.
Tonight
Mostly clear, with a low around 63. Light south wind.
Saturday
Sunny, with a high near 88. South wind 5 to 13 mph, with gusts as high as 21 mph.
Saturday Night
Clear, with a low around 60. South wind around 7 mph, with gusts as high as 15 mph.
Sunday
Sunny, with a high near 87. South wind 6 to 14 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 61. South southeast wind 5 to 7 mph, with gusts as high as 15 mph.
Monday
Sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the morning.
Monday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 60.
Tuesday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Frederick IL
 40.06°N 90.45°W (Elev. 466 ft)
Last Update:
12:51 pm CDT Oct 3, 2025
Forecast Valid:
2pm CDT Oct 3, 2025-6pm CDT Oct 9, 2025
 
Forecast Discussion
 
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Additional Resources

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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