Chesterfield, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Chesterfield, IL in one place.
Showers and thunderstorms likely. Partly sunny, with a high near 66. Chance of precipitation is 60%.
Local Weather Overview
This forecast page for Chesterfield, 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 11, 2026 10:31 PM CDT.
The active forecast window currently covers Apr 18, 2026 for Chesterfield, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 18, 2026
- Latest sync
- Apr 11, 2026 10:31 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Chesterfield
Saturday looks like the warmest upcoming period in Chesterfield at 66 degrees F.
Saturday is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Saturday at about 15 mph NW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Apr 11, 2026 10:31 PM CDT
- Coverage
- 1 day
- 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
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 18
|
Showers And Thunderstorms Likely
|
66°F |
15 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Chesterfield.