Cooper, IL Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Cooper, IL in one place.
Partly sunny, with a high near 83. South wind 5 to 9 mph, with gusts as high as 17 mph.
Local Weather Overview
This forecast page for Cooper, 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 28, 2026 5:41 PM CDT.
The active forecast window currently covers Aug 29 to Sep 3, 2026 for Cooper, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 3, 2026
- Latest sync
- Aug 28, 2026 5:41 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Cooper
Tuesday looks like the warmest upcoming period in Cooper at 95 degrees F.
Saturday Night is the coolest period ahead with temperatures near 69 degrees F.
The strongest winds are forecast for Sunday at about 9 to 14 mph SSW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Aug 28, 2026 5:41 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 69. South wind 8 to 13 mph, with gusts as high as 22 mph.
Mostly sunny, with a high near 89. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Mostly clear, with a low around 73. South wind 7 to 10 mph, with gusts as high as 20 mph.
Sunny, with a high near 93. South southwest wind around 10 mph, with gusts as high as 18 mph.
Mostly clear, with a low around 75.
Sunny, with a high near 95.
Mostly clear, with a low around 75.
Sunny, with a high near 94.
Mostly clear, with a low around 74.
Sunny, with a high near 92.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 73.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Partly Sunny
|
83°F |
5 to 9 mph
S
|
|
Saturday Night
Aug 29
|
Mostly Cloudy
|
69°F |
8 to 13 mph
S
|
|
Sunday
Aug 30
|
Mostly Sunny
|
89°F |
9 to 14 mph
SSW
|
|
Sunday Night
Aug 30
|
Mostly Clear
|
73°F |
7 to 10 mph
S
|
|
Monday
Aug 31
|
Sunny
|
93°F |
10 mph
SSW
|
|
Monday Night
Aug 31
|
Mostly Clear
|
75°F |
9 mph
SSW
|
|
Tuesday
Sep 1
|
Sunny
|
95°F |
6 to 9 mph
SW
|
|
Tuesday Night
Sep 1
|
Mostly Clear
|
75°F |
5 to 8 mph
SSW
|
|
Wednesday
Sep 2
|
Sunny
|
94°F |
6 to 9 mph
SW
|
|
Wednesday Night
Sep 2
|
Mostly Clear
|
74°F |
6 mph
SSW
|
|
Thursday
Sep 3
|
Sunny
|
92°F |
8 mph
SSW
|
|
Thursday Night
Sep 3
|
Partly Cloudy then Slight Chance Rain Showers
|
73°F |
7 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Cooper.