Williamsville, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Williamsville, IL in one place.
Sunny, with a high near 57.
Local Weather Overview
This forecast page for Williamsville, 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 9:13 AM CDT.
The active forecast window currently covers Apr 19 to Apr 21, 2026 for Williamsville, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 19 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 9:13 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Williamsville
Tuesday looks like the warmest upcoming period in Williamsville at 75 degrees F.
Sunday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Sunday at about 12 to 16 mph WNW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Apr 15, 2026 9:13 AM CDT
- Coverage
- 3 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 37.
Sunny, with a high near 67.
Mostly clear, with a low around 49.
Mostly sunny, with a high near 75.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 54.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 19
|
Sunny
|
57°F |
12 to 16 mph
WNW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
37°F |
6 to 12 mph
WSW
|
|
Monday
Apr 20
|
Sunny
|
67°F |
7 to 13 mph
S
|
|
Monday Night
Apr 20
|
Mostly Clear
|
49°F |
12 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
75°F |
10 to 16 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
54°F |
13 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Williamsville.
