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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Frederick IL

  • Overnight

    Overnight: A chance of flurries. Partly cloudy, with a low around 12. Wind chill values between -3 and 2. Northwest wind around 14 mph, with gusts as high as 26 mph.

    Low: 12 °F

    Chance
    Flurries

  • Monday

    Monday: Sunny, with a high near 31. Wind chill values between -1 and 9. North northwest wind 6 to 13 mph, with gusts as high as 23 mph.

    High: 31 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. Calm wind becoming south 5 to 8 mph after midnight. Winds could gust as high as 17 mph.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 52. South wind 10 to 18 mph, with gusts as high as 32 mph.

    High: 52 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 26. West northwest wind 6 to 10 mph, with gusts as high as 22 mph.

    Low: 26 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 46. West northwest wind around 6 mph becoming northeast in the afternoon.

    High: 46 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Rain and snow likely, mainly after midnight. Mostly cloudy, with a low around 28. East wind 3 to 7 mph. Winds could gust as high as 15 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 28 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: A chance of rain and snow before noon. Partly sunny, with a high near 43. Chance of precipitation is 30%.

    High: 43 °F

    Chance
    Rain/Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of flurries. Partly cloudy, with a low around 12. Wind chill values between -3 and 2. Northwest wind around 14 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 31. Wind chill values between -1 and 9. North northwest wind 6 to 13 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 18. Calm wind becoming south 5 to 8 mph after midnight. Winds could gust as high as 17 mph.
Tuesday
Increasing clouds, with a high near 52. South wind 10 to 18 mph, with gusts as high as 32 mph.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 26. West northwest wind 6 to 10 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 46. West northwest wind around 6 mph becoming northeast in the afternoon.
Wednesday Night
Rain and snow likely, mainly after midnight. Mostly cloudy, with a low around 28. East wind 3 to 7 mph. Winds could gust as high as 15 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A chance of rain and snow before noon. Partly sunny, with a high near 43. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 26.
Friday
Sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 34.
Saturday
Mostly sunny, with a high near 57.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
A chance of rain and snow. Partly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Frederick IL
 40.06°N 90.43°W (Elev. 440 ft)
Last Update:
12:17 am CST Feb 23, 2026
Forecast Valid:
12am CST Feb 23, 2026-6pm CST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation