Westchester, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Westchester, IL in one place.
Rain showers likely before 10am, then showers and thunderstorms likely. Partly sunny, with a high near 84. Chance of precipitation is 70%.
Local Weather Overview
This forecast page for Westchester, 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: Jun 4, 2026 1:42 AM CDT.
The active forecast window currently covers Jun 6 to Jun 10, 2026 for Westchester, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 6 to Jun 10, 2026
- Latest sync
- Jun 4, 2026 1:42 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Westchester
Wednesday looks like the warmest upcoming period in Westchester at 89 degrees F.
Saturday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Saturday at about 5 to 10 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 4, 2026 1:42 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
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. Partly cloudy, with a low around 62.
Mostly sunny, with a high near 80.
Partly cloudy, with a low around 62.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 68.
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 87.
A chance of showers and thunderstorms. Partly cloudy, with a low around 68.
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jun 6
|
Showers And Thunderstorms Likely
|
84°F |
5 to 10 mph
W
|
|
Saturday Night
Jun 6
|
Showers And Thunderstorms Likely
|
62°F |
5 mph
NE
|
|
Sunday
Jun 7
|
Mostly Sunny
|
80°F |
5 to 10 mph
ENE
|
|
Sunday Night
Jun 7
|
Partly Cloudy
|
62°F |
5 to 10 mph
E
|
|
Monday
Jun 8
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
85°F |
5 to 10 mph
ESE
|
|
Monday Night
Jun 8
|
Slight Chance Showers And Thunderstorms
|
68°F |
5 to 10 mph
ESE
|
|
Tuesday
Jun 9
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
87°F |
5 to 10 mph
ESE
|
|
Tuesday Night
Jun 9
|
Chance Showers And Thunderstorms
|
68°F |
5 to 10 mph
SE
|
|
Wednesday
Jun 10
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
89°F |
5 to 10 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Westchester.