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.

Thunderstorm in Vicinity

77°F

25°C

Humidity 88%
Wind Speed SE 12 G 18 mph
Barometer 30.07 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 14 Aug 12:35 pm CDT
Extended Forecast for

Meredosia IL

Heat Advisory August 14, 12:50pm until August 16, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 14, 12:50pm until August 16, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 88 °F

    Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers between midnight and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 74. East wind 5 to 7 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.

    Low: 74 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Partly sunny, with a high near 92. Heat index values as high as 109. Southeast wind 5 to 9 mph becoming west southwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 50%.

    High: 92 °F

    Chance
    T-storms then
    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 74. West wind around 6 mph becoming calm in the evening.

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 88. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 88 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68. North wind 3 to 7 mph.

    Low: 68 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 83. North wind 3 to 6 mph.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms before 1pm, then a chance of showers between 1pm and 2pm. Partly sunny, with a high near 88. Southeast wind 3 to 6 mph. Chance of precipitation is 50%.
Tonight
A slight chance of showers between midnight and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 74. East wind 5 to 7 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Partly sunny, with a high near 92. Heat index values as high as 109. Southeast wind 5 to 9 mph becoming west southwest in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 50%.
Saturday Night
Partly cloudy, with a low around 74. West wind around 6 mph becoming calm in the evening.
Sunday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 88. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 68. North wind 3 to 7 mph.
Monday
Mostly sunny, with a high near 83. North wind 3 to 6 mph.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Partly sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 81.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Meredosia IL
 39.82°N 90.55°W (Elev. 440 ft)
Last Update:
12:36 pm CDT Aug 14, 2026
Forecast Valid:
12pm CDT Aug 14, 2026-6pm CDT Aug 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