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

54°F

12°C

Humidity 100%
Wind Speed W 5 mph
Barometer 30.05 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 15 Jun 1:55 am CDT
Extended Forecast for

Winchester IL

  • Overnight

    Overnight: Mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 77. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. Light and variable wind becoming south southwest 5 to 7 mph in the evening.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Showers likely before 1pm, then a chance of showers and thunderstorms between 1pm and 3pm. Mostly sunny, with a high near 78. South southwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 56. West wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 17 mph.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Breezy, with a south southeast wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 84 °F

    Chance
    Showers then
    Showers
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 1am. Low around 65. West southwest wind 10 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 65 °F

    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 53. Calm wind.
Monday
Sunny, with a high near 77. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 57. Light and variable wind becoming south southwest 5 to 7 mph in the evening.
Tuesday
Showers likely before 1pm, then a chance of showers and thunderstorms between 1pm and 3pm. Mostly sunny, with a high near 78. South southwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Partly cloudy, with a low around 56. West wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 17 mph.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Breezy, with a south southeast wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm before 1am. Low around 65. West southwest wind 10 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 56.
Juneteenth
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 58.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 64.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winchester IL
 39.62°N 90.44°W (Elev. 499 ft)
Last Update:
1:26 am CDT Jun 15, 2026
Forecast Valid:
2am CDT Jun 15, 2026-6pm CDT Jun 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