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.

Fair

60°F

16°C

Humidity 43%
Wind Speed N 6 mph
Barometer 30.05 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 13 May 8:15 pm CDT
Extended Forecast for

2 Miles NNW Frederick IL

  • Tonight

    Tonight: Clear, with a low around 43. North wind 5 to 7 mph becoming calm in the evening.

    Low: 43 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 74. Calm wind becoming south 5 to 9 mph in the morning.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 55. South southeast wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Partly Cloudy
    then Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Cloudy through mid morning, then gradual clearing, with a high near 80. South wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    High: 80 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind 5 to 9 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 83. South southwest wind 5 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 1am. Mostly cloudy, with a low around 62. South wind around 6 mph becoming east southeast in the evening. Winds could gust as high as 16 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    T-storms
    Likely

  • Sunday

    Sunday: Partly sunny, with a high near 86.

    High: 86 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 43. North wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 74. Calm wind becoming south 5 to 9 mph in the morning.
Thursday Night
Showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 55. South southeast wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Cloudy through mid morning, then gradual clearing, with a high near 80. South wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind 5 to 9 mph, with gusts as high as 20 mph.
Saturday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 83. South southwest wind 5 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms likely before 1am. Mostly cloudy, with a low around 62. South wind around 6 mph becoming east southeast in the evening. Winds could gust as high as 16 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Partly sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 69.
Monday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Breezy.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 66.
Tuesday
Showers likely. Mostly cloudy, with a high near 79.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 58.
Wednesday
Partly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Frederick IL
 40.08°N 90.45°W (Elev. 640 ft)
Last Update:
7:51 pm CDT May 13, 2026
Forecast Valid:
8pm CDT May 13, 2026-6pm CDT May 20, 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