Williamsville, IL Weather Forecast

Local 7-day forecast

57°
F

Sunny

Track current conditions, temperature changes, wind, and the full daily outlook for Williamsville, IL in one place.

Sunday, April 19, 2026
Wind: 12 to 16 mph WNW
Sunday

Sunny, with a high near 57.

Local 7-day forecast

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
Next High
57°F
Sunday
Next Low
37°F
Sunday Night
Rain Outlook
1
Periods mentioning precipitation
Windiest
12 to 16 mph
Sunday

Daily Outlook

Today
Apr 19
Sunny
57 °F
/ 37°F
Wind 12 to 16 mph
Mon
Apr 20
Sunny
67 °F
/ 49°F
Wind 7 to 13 mph
Tue
Apr 21
Mostly Sunny
75 °F
/ 54°F
Wind 10 to 16 mph

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 source

Extended Forecast

Sunday Night
Apr 19
37°F
Mostly Clear
6 to 12 mph WSW

Mostly clear, with a low around 37.

Monday
Apr 20
67°F
Sunny
7 to 13 mph S

Sunny, with a high near 67.

Monday Night
Apr 20
49°F
Mostly Clear
12 mph S

Mostly clear, with a low around 49.

Tuesday
Apr 21
75°F
Mostly Sunny
10 to 16 mph SW

Mostly sunny, with a high near 75.

Tuesday Night
Apr 21
54°F
Partly Cloudy then Slight Chance Showers And Thunderstorms
13 mph SW

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
Williamsville former train station
Williamsville former train station image
Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.