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.

Fair

35°F

2°C

Humidity 99%
Wind Speed E 7 mph
Barometer 30.02 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 19 Mar 4:55 am CDT
Extended Forecast for

Winchester IL

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 73. South wind 3 to 6 mph.

    High: 73 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 46. South southwest wind 3 to 5 mph.

    Low: 46 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79. Southwest wind 6 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48. North northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 80. South southwest wind 10 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 73. South wind 3 to 6 mph.
Tonight
Partly cloudy, with a low around 46. South southwest wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 79. Southwest wind 6 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 48. North northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 78. Calm wind becoming southwest around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 57. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 80. South southwest wind 10 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Sunny, with a high near 54.
Monday Night
Mostly cloudy, with a low around 34.
Tuesday
Mostly cloudy, with a high near 58.
Tuesday Night
Partly cloudy, with a low around 37.
Wednesday
Mostly sunny, with a high near 69.
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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:
4:51 am CDT Mar 19, 2026
Forecast Valid:
5am CDT Mar 19, 2026-6pm CDT Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation