Chatham, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Chatham, IL in one place.
Showers and thunderstorms likely. Mostly cloudy, with a high near 76.
Local Weather Overview
This forecast page for Chatham, 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: Sep 11, 2026 6:58 AM CDT.
The active forecast window currently covers Sep 16 to Sep 17, 2026 for Chatham, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 17, 2026
- Latest sync
- Sep 11, 2026 6:58 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Chatham
Thursday looks like the warmest upcoming period in Chatham at 79 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 10 mph NE.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 11, 2026 6:58 AM CDT
- Coverage
- 2 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
A chance of rain showers before 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 65.
Showers and thunderstorms likely. Partly sunny, with a high near 79.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Showers And Thunderstorms Likely
|
76°F |
5 to 10 mph
NE
|
|
Wednesday Night
Sep 16
|
Showers And Thunderstorms Likely
|
65°F |
5 to 10 mph
NE
|
|
Thursday
Sep 17
|
Showers And Thunderstorms Likely
|
79°F |
5 to 10 mph
NNE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Chatham.