Chester, IL Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Chester, IL in one place.
Partly sunny, with a high near 77. North wind 5 to 10 mph.
Local Weather Overview
This forecast page for Chester, 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 22, 2026 8:39 PM CDT.
The active forecast window currently covers Sep 23 to Sep 29, 2026 for Chester, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 23 to Sep 29, 2026
- Latest sync
- Sep 22, 2026 8:39 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Chester
Tuesday looks like the warmest upcoming period in Chester at 86 degrees F.
Friday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 10 mph N.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Sep 22, 2026 8:39 PM CDT
- Coverage
- 7 days
- 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
Mostly cloudy. Low around 54, with temperatures rising to around 57 overnight. North northeast wind 2 to 9 mph.
Mostly sunny, with a high near 78. North northeast wind 3 to 7 mph.
Partly cloudy, with a low around 56. North northeast wind 1 to 5 mph.
Mostly sunny, with a high near 80. Northeast wind 1 to 6 mph.
Partly cloudy, with a low around 53. East northeast wind around 5 mph.
Partly sunny, with a high near 78. East wind around 3 mph.
Mostly cloudy, with a low around 54. East wind around 2 mph.
Partly sunny, with a high near 80. East southeast wind 0 to 3 mph.
Partly cloudy, with a low around 56. East southeast wind around 2 mph.
Mostly sunny, with a high near 84. Southeast wind 1 to 5 mph.
Partly cloudy, with a low around 58. Southeast wind around 3 mph.
A chance of rain showers after 7am. Partly sunny, with a high near 86. South southeast wind 3 to 8 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 23
|
Partly Sunny
|
77°F |
5 to 10 mph
N
|
|
Wednesday Night
Sep 23
|
Mostly Cloudy
|
54°F |
2 to 9 mph
NNE
|
|
Thursday
Sep 24
|
Mostly Sunny
|
78°F |
3 to 7 mph
NNE
|
|
Thursday Night
Sep 24
|
Partly Cloudy
|
56°F |
1 to 5 mph
NNE
|
|
Friday
Sep 25
|
Mostly Sunny
|
80°F |
1 to 6 mph
NE
|
|
Friday Night
Sep 25
|
Partly Cloudy
|
53°F |
5 mph
ENE
|
|
Saturday
Sep 26
|
Partly Sunny
|
78°F |
3 mph
E
|
|
Saturday Night
Sep 26
|
Mostly Cloudy
|
54°F |
2 mph
E
|
|
Sunday
Sep 27
|
Partly Sunny
|
80°F |
0 to 3 mph
ESE
|
|
Sunday Night
Sep 27
|
Partly Cloudy
|
56°F |
2 mph
ESE
|
|
Monday
Sep 28
|
Mostly Sunny
|
84°F |
1 to 5 mph
SE
|
|
Monday Night
Sep 28
|
Partly Cloudy
|
58°F |
3 mph
SE
|
|
Tuesday
Sep 29
|
Chance Rain Showers
|
86°F |
3 to 8 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Chester.
