Winchester, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Winchester, IL in one place.
Showers and thunderstorms before 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Southeast wind 3 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters 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: Oct 14, 2026 11:03 AM CDT.
The active forecast window currently covers Oct 15 to Oct 20, 2026 for Winchester, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 14, 2026 11:03 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Winchester
Tuesday looks like the warmest upcoming period in Winchester at 78 degrees F.
Friday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Friday at about 16 to 21 mph NW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 14, 2026 11:03 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
Showers and thunderstorms likely before 1am. Mostly cloudy, with a low around 44. West northwest wind 7 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Partly sunny, with a high near 58. Northwest wind 16 to 21 mph, with gusts as high as 36 mph.
Areas of frost after 5am. Mostly clear, with a low around 35. North wind 1 to 14 mph, with gusts as high as 23 mph.
Areas of frost before 8am. Sunny, with a high near 61. East wind around 1 mph.
Patchy frost after 5am. Clear, with a low around 36.
Areas of frost before 8am. Sunny, with a high near 70.
Partly cloudy, with a low around 43.
Partly sunny, with a high near 73.
Partly cloudy, with a low around 46.
Sunny, with a high near 78.
Mostly clear, with a low around 51.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Showers And Thunderstorms
|
77°F |
3 to 7 mph
SE
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms Likely
|
44°F |
7 to 17 mph
WNW
|
|
Friday
Oct 16
|
Partly Sunny
|
58°F |
16 to 21 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear then Areas Of Frost
|
35°F |
1 to 14 mph
N
|
|
Saturday
Oct 17
|
Areas Of Frost then Sunny
|
61°F |
1 mph
E
|
|
Saturday Night
Oct 17
|
Clear then Patchy Frost
|
36°F |
0 to 3 mph
SSE
|
|
Sunday
Oct 18
|
Areas Of Frost then Sunny
|
70°F |
3 to 8 mph
S
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
43°F |
6 mph
S
|
|
Monday
Oct 19
|
Partly Sunny
|
73°F |
5 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
46°F |
2 mph
SSE
|
|
Tuesday
Oct 20
|
Sunny
|
78°F |
1 to 5 mph
SSE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
51°F |
3 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Winchester.
Nearby forecast pages are not available for this location yet.
