Green Valley, IL Weather Forecast
Local 7-day forecast
Sunny then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Green Valley, IL in one place.
A chance of showers and thunderstorms after 4pm. Sunny, with a high near 92. Heat index values as high as 102. West wind around 12 mph, with gusts as high as 18 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Green Valley, 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: Jul 18, 2026 11:52 AM CDT.
The active forecast window currently covers Jul 18 to Jul 24, 2026 for Green Valley, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 24, 2026
- Latest sync
- Jul 18, 2026 11:52 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Green Valley
Today looks like the warmest upcoming period in Green Valley at 92 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Today at about 12 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 18, 2026 11:52 AM CDT
- Coverage
- 7 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
A chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 69. Heat index values as high as 100. North wind 2 to 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Patchy smoke after 8am. Sunny, with a high near 86. East northeast wind around 5 mph.
Patchy smoke before 2am. Mostly clear, with a low around 66. East southeast wind around 3 mph.
Sunny, with a high near 90. South wind 3 to 7 mph.
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 74. Southwest wind around 8 mph, with gusts as high as 17 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 7am. Sunny, with a high near 89. West northwest wind 6 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Mostly clear, with a low around 63.
Sunny, with a high near 81.
Mostly clear, with a low around 59.
Sunny, with a high near 81.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 62.
A slight chance of rain showers before 1pm. Mostly sunny, with a high near 83.
A slight chance of rain showers after 7pm. Partly cloudy, with a low around 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 18
|
Sunny then Chance Showers And Thunderstorms
|
92°F |
12 mph
W
|
|
Tonight
Jul 18
|
Chance Showers And Thunderstorms then Partly Cloudy
|
69°F |
2 to 8 mph
N
|
|
Sunday
Jul 19
|
Patchy Smoke
|
86°F |
5 mph
ENE
|
|
Sunday Night
Jul 19
|
Patchy Smoke
|
66°F |
3 mph
ESE
|
|
Monday
Jul 20
|
Sunny
|
90°F |
3 to 7 mph
S
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
74°F |
8 mph
SW
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms then Sunny
|
89°F |
6 to 12 mph
WNW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
63°F |
6 to 12 mph
NNW
|
|
Wednesday
Jul 22
|
Sunny
|
81°F |
8 mph
N
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
59°F |
1 to 6 mph
ENE
|
|
Thursday
Jul 23
|
Sunny
|
81°F |
3 mph
SSE
|
|
Thursday Night
Jul 23
|
Partly Cloudy then Slight Chance Rain Showers
|
62°F |
3 mph
SSE
|
|
Friday
Jul 24
|
Slight Chance Rain Showers
|
83°F |
6 mph
SSE
|
|
Friday Night
Jul 24
|
Slight Chance Rain Showers
|
64°F |
3 mph
ESE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Green Valley.