Carterville, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Carterville, IL in one place.
Sunny, with a high near 87. East wind around 3 mph.
Local Weather Overview
This forecast page for Carterville, 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: Aug 23, 2026 8:38 PM CDT.
The active forecast window currently covers Aug 25 to Aug 30, 2026 for Carterville, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 25 to Aug 30, 2026
- Latest sync
- Aug 23, 2026 8:38 PM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Carterville
Sunday looks like the warmest upcoming period in Carterville at 90 degrees F.
Thursday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Sunday at about 3 to 8 mph SSW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 23, 2026 8:38 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KPAH
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 68. East southeast wind around 1 mph.
Mostly sunny, with a high near 89. South southwest wind 0 to 3 mph.
A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 68. West wind around 2 mph.
Sunny, with a high near 89. Northwest wind 0 to 7 mph.
Mostly clear, with a low around 66. North wind 0 to 5 mph.
Sunny, with a high near 88. North wind 0 to 3 mph.
Mostly clear, with a low around 67. Northeast wind 0 to 3 mph.
Mostly sunny, with a high near 88. Southeast wind 0 to 3 mph.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. South southeast wind around 3 mph.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 90. South southwest wind 3 to 8 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Aug 25
|
Sunny
|
87°F |
3 mph
E
|
|
Tuesday Night
Aug 25
|
Mostly Clear
|
68°F |
1 mph
ESE
|
|
Wednesday
Aug 26
|
Mostly Sunny
|
89°F |
0 to 3 mph
SSW
|
|
Wednesday Night
Aug 26
|
Slight Chance Showers And Thunderstorms
|
68°F |
2 mph
W
|
|
Thursday
Aug 27
|
Sunny
|
89°F |
0 to 7 mph
NW
|
|
Thursday Night
Aug 27
|
Mostly Clear
|
66°F |
0 to 5 mph
N
|
|
Friday
Aug 28
|
Sunny
|
88°F |
0 to 3 mph
N
|
|
Friday Night
Aug 28
|
Mostly Clear
|
67°F |
0 to 3 mph
NE
|
|
Saturday
Aug 29
|
Mostly Sunny
|
88°F |
0 to 3 mph
SE
|
|
Saturday Night
Aug 29
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
69°F |
3 mph
SSE
|
|
Sunday
Aug 30
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
90°F |
3 to 8 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Carterville.