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

5 Miles ESE Plymouth IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 11. Wind chill values between -2 and 3. North northwest wind 13 to 15 mph, with gusts as high as 26 mph.

    Low: 11 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 30. Wind chill values between -4 and 6. North northwest wind 5 to 14 mph, with gusts as high as 21 mph.

    High: 30 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 18. Light and variable wind becoming south 5 to 10 mph after midnight. Winds could gust as high as 18 mph.

    Low: 18 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 51. South wind 11 to 18 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 51 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 27. West northwest wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 27 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 47. West northwest wind 6 to 8 mph becoming east northeast in the afternoon.

    High: 47 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Rain likely before midnight, then rain and snow likely. Mostly cloudy, with a low around 27. East wind 7 to 10 mph becoming north after midnight. Winds could gust as high as 17 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 27 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 11. Wind chill values between -2 and 3. North northwest wind 13 to 15 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 30. Wind chill values between -4 and 6. North northwest wind 5 to 14 mph, with gusts as high as 21 mph.
Monday Night
Increasing clouds, with a low around 18. Light and variable wind becoming south 5 to 10 mph after midnight. Winds could gust as high as 18 mph.
Tuesday
Mostly cloudy, with a high near 51. South wind 11 to 18 mph becoming west southwest in the afternoon. Winds could gust as high as 25 mph.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 27. West northwest wind 6 to 11 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 47. West northwest wind 6 to 8 mph becoming east northeast in the afternoon.
Wednesday Night
Rain likely before midnight, then rain and snow likely. Mostly cloudy, with a low around 27. East wind 7 to 10 mph becoming north after midnight. Winds could gust as high as 17 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Mostly sunny, with a high near 44.
Thursday Night
Mostly clear, with a low around 26.
Friday
Sunny, with a high near 61.
Friday Night
Mostly clear, with a low around 35.
Saturday
Mostly sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Partly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ESE Plymouth IL
 40.27°N 90.82°W (Elev. 495 ft)
Last Update:
9:36 pm CST Feb 22, 2026
Forecast Valid:
11pm CST Feb 22, 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