National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Mostly Cloudy

85°F

29°C

Humidity 74%
Wind Speed N 7 mph
Barometer 29.85 in
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 28 Jul 12:35 pm CDT
Extended Forecast for

Winchester IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 89. North northeast wind 7 to 9 mph.

    High: 89 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 65. East wind 5 to 7 mph.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 85. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 63. East northeast wind around 6 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87. Light south wind.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 66. Calm wind becoming south southeast around 5 mph after midnight.

    Low: 66 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. South wind 6 to 8 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 83 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Partly sunny, with a high near 89. North northeast wind 7 to 9 mph.
Tonight
Partly cloudy, with a low around 65. East wind 5 to 7 mph.
Wednesday
Sunny, with a high near 85. Calm wind becoming east northeast around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 63. East northeast wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 87. Light south wind.
Thursday Night
Mostly cloudy, with a low around 66. Calm wind becoming south southeast around 5 mph after midnight.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. South wind 6 to 8 mph, with gusts as high as 16 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Saturday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Chance of precipitation is 60%.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
Sunny, with a high near 83.
Sunday Night
Mostly clear, with a low around 64.
Monday
Sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Winchester IL
 39.62°N 90.44°W (Elev. 499 ft)
Last Update:
12:36 pm CDT Jul 28, 2026
Forecast Valid:
12pm CDT Jul 28, 2026-6pm CDT Aug 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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