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

Hazardous Weather Conditions

Current conditions at

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Fair

58°F

14°C

Humidity 37%
Wind Speed NW 13 mph
Barometer 30.17 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 19 Apr 6:55 pm CDT
Extended Forecast for

Winchester IL

Frost Advisory April 20, 01:00am until April 20, 08:00am
Click here for hazard details and duration
Frost Advisory

  • Tonight

    Tonight: Areas of frost between 3am and 5am. Otherwise, mostly clear, with a low around 36. North northwest wind 5 to 11 mph becoming east northeast after midnight. Winds could gust as high as 20 mph.

    Low: 36 °F

    Mostly Clear
    then Areas
    Frost

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 65. Light and variable wind becoming south southeast 5 to 8 mph in the morning.

    High: 65 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48. South southeast wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. Southwest wind 9 to 17 mph, with gusts as high as 25 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. West southwest wind 6 to 8 mph, with gusts as high as 15 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. South wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 82. Breezy.

    High: 82 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 58. Chance of precipitation is 80%.

    Low: 58 °F

    Chance
    T-storms then
    Showers

Detailed Forecast

Tonight
Areas of frost between 3am and 5am. Otherwise, mostly clear, with a low around 36. North northwest wind 5 to 11 mph becoming east northeast after midnight. Winds could gust as high as 20 mph.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 65. Light and variable wind becoming south southeast 5 to 8 mph in the morning.
Monday Night
Mostly clear, with a low around 48. South southeast wind 7 to 10 mph, with gusts as high as 18 mph.
Tuesday
Sunny, with a high near 78. Southwest wind 9 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 56. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 79. West southwest wind 6 to 8 mph, with gusts as high as 15 mph.
Wednesday Night
Mostly clear, with a low around 58. South wind 7 to 9 mph, with gusts as high as 18 mph.
Thursday
Mostly sunny, with a high near 82. Breezy.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 58. Chance of precipitation is 80%.
Friday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 46.
Sunday
Partly sunny, with a high near 68.
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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:
6:36 pm CDT Apr 19, 2026
Forecast Valid:
7pm CDT Apr 19, 2026-6pm CDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation