Walnut Hill, IL Weather Forecast
Local 7-day forecast
Mostly Sunny then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Walnut Hill, IL in one place.
A chance of showers and thunderstorms after 1pm. Mostly sunny. High near 95, with temperatures falling to around 92 in the afternoon. Heat index values as high as 107. Southwest wind around 6 mph. Chance of precipitation is 40%.
Local Weather Overview
This forecast page for Walnut Hill, 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 12, 2026 10:03 AM CDT.
The active forecast window currently covers Aug 12 to Aug 18, 2026 for Walnut Hill, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 12 to Aug 18, 2026
- Latest sync
- Aug 12, 2026 10:03 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Walnut Hill
Saturday looks like the warmest upcoming period in Walnut Hill at 98 degrees F.
Monday Night is the coolest period ahead with temperatures near 68 degrees F.
The strongest winds are forecast for Sunday at about 3 to 7 mph WSW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 12, 2026 10:03 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KVWX
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. Mostly cloudy, with a low around 76. South southeast wind around 5 mph. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms before 9am. Partly sunny, with a high near 93. South southwest wind around 6 mph. Chance of precipitation is 20%.
Partly cloudy, with a low around 77. South southwest wind around 6 mph.
Mostly sunny, with a high near 97. Southwest wind around 3 mph.
Mostly clear, with a low around 76. Southeast wind around 5 mph.
Sunny, with a high near 98. South southwest wind around 3 mph.
Mostly clear, with a low around 76. South wind around 5 mph.
Sunny, with a high near 98. West southwest wind 3 to 7 mph.
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73. North northwest wind around 3 mph.
A slight chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89. North wind 2 to 6 mph.
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 68. Northeast wind 1 to 6 mph.
Mostly sunny, with a high near 87. Northeast wind around 2 mph.
Partly cloudy, with a low around 68. East southeast wind around 2 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Aug 12
|
Mostly Sunny then Chance Showers And Thunderstorms
|
95°F |
6 mph
SW
|
|
Tonight
Aug 12
|
Chance Showers And Thunderstorms
|
76°F |
5 mph
SSE
|
|
Thursday
Aug 13
|
Slight Chance Showers And Thunderstorms then Partly Sunny
|
93°F |
6 mph
SSW
|
|
Thursday Night
Aug 13
|
Partly Cloudy
|
77°F |
6 mph
SSW
|
|
Friday
Aug 14
|
Mostly Sunny
|
97°F |
3 mph
SW
|
|
Friday Night
Aug 14
|
Mostly Clear
|
76°F |
5 mph
SE
|
|
Saturday
Aug 15
|
Sunny
|
98°F |
3 mph
SSW
|
|
Saturday Night
Aug 15
|
Mostly Clear
|
76°F |
5 mph
S
|
|
Sunday
Aug 16
|
Sunny
|
98°F |
3 to 7 mph
WSW
|
|
Sunday Night
Aug 16
|
Mostly Clear then Slight Chance Showers And Thunderstorms
|
73°F |
3 mph
NNW
|
|
Monday
Aug 17
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
89°F |
2 to 6 mph
N
|
|
Monday Night
Aug 17
|
Slight Chance Rain Showers then Partly Cloudy
|
68°F |
1 to 6 mph
NE
|
|
Tuesday
Aug 18
|
Mostly Sunny
|
87°F |
2 mph
NE
|
|
Tuesday Night
Aug 18
|
Partly Cloudy
|
68°F |
2 mph
ESE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Walnut Hill.