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

74°F

23°C

Humidity 97%
Wind Speed Calm
Barometer 30.07 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 15 Aug 9:15 am CDT
Extended Forecast for

Meredosia IL

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly before 10am. Partly sunny, with a high near 89. Heat index values as high as 101. East southeast wind 6 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 16 mph.

    High: 89 °F

    Chance
    T-storms then
    Partly Sunny

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 74. Calm wind becoming northwest around 5 mph after midnight.

    Low: 74 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 8am. Partly sunny, with a high near 87. Northwest wind 3 to 8 mph.

    High: 87 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67. North northwest wind 3 to 7 mph.

    Low: 67 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 83. Light north wind.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. Calm wind becoming south around 5 mph in the afternoon.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly before 10am. Partly sunny, with a high near 89. Heat index values as high as 101. East southeast wind 6 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 16 mph.
Tonight
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 74. Calm wind becoming northwest around 5 mph after midnight.
Sunday
A 20 percent chance of showers and thunderstorms before 8am. Partly sunny, with a high near 87. Northwest wind 3 to 8 mph.
Sunday Night
Partly cloudy, with a low around 67. North northwest wind 3 to 7 mph.
Monday
Sunny, with a high near 83. Light north wind.
Monday Night
Mostly clear, with a low around 64. Calm wind.
Tuesday
Sunny, with a high near 86. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.
Wednesday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Partly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Meredosia IL
 39.84°N 90.55°W (Elev. 440 ft)
Last Update:
7:36 am CDT Aug 15, 2026
Forecast Valid:
9am CDT Aug 15, 2026-6pm CDT Aug 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation