Chambersburg, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Chambersburg, IL in one place.
Sunny, with a high near 62.
Local Weather Overview
This forecast page for Chambersburg, 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 10:42 PM CDT.
The active forecast window currently covers Apr 19 to Apr 22, 2026 for Chambersburg, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 19 to Apr 22, 2026
- Latest sync
- Apr 15, 2026 10:42 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Chambersburg
Wednesday looks like the warmest upcoming period in Chambersburg at 76 degrees F.
Sunday Night is the coolest period ahead with temperatures near 39 degrees F.
The strongest winds are forecast for Tuesday at about 10 to 14 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 10:42 PM CDT
- Coverage
- 4 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear, with a low around 39.
Sunny, with a high near 71.
Mostly clear, with a low around 51.
Sunny, with a high near 74.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 53. Chance of precipitation is 20%.
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 19
|
Sunny
|
62°F |
6 to 12 mph
NW
|
|
Sunday Night
Apr 19
|
Clear
|
39°F |
5 to 8 mph
E
|
|
Monday
Apr 20
|
Sunny
|
71°F |
5 to 12 mph
S
|
|
Monday Night
Apr 20
|
Mostly Clear
|
51°F |
10 mph
S
|
|
Tuesday
Apr 21
|
Sunny
|
74°F |
10 to 14 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy then Slight Chance Rain Showers
|
53°F |
7 to 10 mph
SW
|
|
Wednesday
Apr 22
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
76°F |
7 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Chambersburg.