Winchester, IL Weather Forecast
Local 7-day forecast
Mostly Sunny then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Winchester, IL in one place.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Heat index values as high as 102. Southeast wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Winchester, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 15, 2026 9:52 AM CDT.
The active forecast window currently covers Jul 16 to Jul 21, 2026 for Winchester, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 16 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 9:52 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Winchester
Saturday looks like the warmest upcoming period in Winchester at 93 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 63 degrees F.
The strongest winds are forecast for Tuesday at about 6 to 10 mph NNW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 9:52 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. South southwest wind around 3 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 90. West southwest wind 1 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms. Mostly clear, with a low around 73. West southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of showers and thunderstorms before 7am. Sunny, with a high near 93. West southwest wind 6 to 9 mph, with gusts as high as 16 mph.
Mostly clear, with a low around 73.
Sunny, with a high near 91.
Mostly clear, with a low around 72.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 93.
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.
Sunny, with a high near 88.
Mostly clear, with a low around 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Jul 16
|
Mostly Sunny then Chance Showers And Thunderstorms
|
90°F |
0 to 5 mph
SE
|
|
Thursday Night
Jul 16
|
Chance Showers And Thunderstorms
|
72°F |
3 mph
SSW
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
90°F |
1 to 6 mph
WSW
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
73°F |
6 mph
WSW
|
|
Saturday
Jul 18
|
Slight Chance Showers And Thunderstorms then Sunny
|
93°F |
6 to 9 mph
WSW
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
73°F |
7 mph
WSW
|
|
Sunday
Jul 19
|
Sunny
|
91°F |
5 mph
W
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
72°F |
5 mph
SSW
|
|
Monday
Jul 20
|
Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
6 to 9 mph
SW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
72°F |
7 mph
WNW
|
|
Tuesday
Jul 21
|
Sunny
|
88°F |
6 to 10 mph
NNW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
63°F |
3 to 9 mph
NNE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Winchester.
Nearby forecast pages are not available for this location yet.
