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Hazardous Weather Conditions

Current conditions at

Mount Sterling, Mount Sterling Municipal Airport (KI63)

Lat: 39.99°NLon: 90.8°WElev: 732ft.

Fair

76°F

24°C

Humidity 72%
Wind Speed S 3 mph
Barometer 29.87 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 13 Oct 8:35 pm CDT
Extended Forecast for

Frederick IL

  • Tonight

    Tonight: A chance of showers and thunderstorms between 10pm and 2am, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 66. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly before 5pm. Cloudy, with a high near 74. Calm wind becoming north northeast 5 to 7 mph in the morning.

    High: 74 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 5am. Mostly cloudy, with a low around 60. East northeast wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 60 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 1pm, then showers between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 75. East northeast wind 5 to 7 mph becoming west southwest in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 75 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 1am. Mostly cloudy, with a low around 44. Northwest wind 8 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.

    Low: 44 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 59. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 34 mph.

    High: 59 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Patchy frost after 5am. Otherwise, mostly clear, with a low around 35. North northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 35 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Areas of frost before 8am. Otherwise, sunny, with a high near 62.

    High: 62 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 38.

    Low: 38 °F

    Clear

Detailed Forecast

Tonight
A chance of showers and thunderstorms between 10pm and 2am, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 66. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly before 5pm. Cloudy, with a high near 74. Calm wind becoming north northeast 5 to 7 mph in the morning.
Wednesday Night
Showers likely, mainly after 5am. Mostly cloudy, with a low around 60. East northeast wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers and possibly a thunderstorm before 1pm, then showers between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 75. East northeast wind 5 to 7 mph becoming west southwest in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 1am. Mostly cloudy, with a low around 44. Northwest wind 8 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.
Friday
Mostly sunny, with a high near 59. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 34 mph.
Friday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 35. North northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 62.
Saturday Night
Clear, with a low around 38.
Sunday
Sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Frederick IL
 40.06°N 90.43°W (Elev. 440 ft)
Last Update:
8:36 pm CDT Oct 13, 2026
Forecast Valid:
8pm CDT Oct 13, 2026-6pm CDT Oct 20, 2026
 
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