Wilsonville, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Wilsonville, IL in one place.
Showers and thunderstorms. Mostly sunny, with a high near 60. Chance of precipitation is 80%.
Local Weather Overview
This forecast page for Wilsonville, 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: Apr 15, 2026 6:27 PM CDT.
The active forecast window currently covers Apr 18 to Apr 21, 2026 for Wilsonville, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 18 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 6:27 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Wilsonville
Tuesday looks like the warmest upcoming period in Wilsonville at 75 degrees F.
Saturday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Saturday at about 14 to 18 mph W.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 6:27 PM CDT
- Coverage
- 4 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- 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 rain showers before 7pm. Mostly clear, with a low around 37. Chance of precipitation is 30%.
Sunny, with a high near 61.
Clear, with a low around 39.
Sunny, with a high near 69.
Mostly clear, with a low around 48.
Sunny, with a high near 75.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 53. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 18
|
Showers And Thunderstorms
|
60°F |
14 to 18 mph
W
|
|
Saturday Night
Apr 18
|
Chance Rain Showers then Mostly Clear
|
37°F |
7 to 15 mph
NW
|
|
Sunday
Apr 19
|
Sunny
|
61°F |
7 to 14 mph
NW
|
|
Sunday Night
Apr 19
|
Clear
|
39°F |
5 to 9 mph
NE
|
|
Monday
Apr 20
|
Sunny
|
69°F |
5 to 12 mph
S
|
|
Monday Night
Apr 20
|
Mostly Clear
|
48°F |
10 mph
S
|
|
Tuesday
Apr 21
|
Sunny
|
75°F |
9 to 15 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
53°F |
8 to 12 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Wilsonville.