Walnut Hill, IL Weather & Growing Conditions
Overnight
71°F
Mostly Clear
Mostly clear. Low around 71, with temperatures rising to around 73 overnight. South southeast wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Mostly Clear | 1 mph SSE | 2% |
| Saturday | 97°F | Mostly Sunny | 2 to 6 mph SW | 5% |
| Saturday Night | 72°F | Partly Cloudy | 3 mph SSW | 3% |
| Sunday | 94°F | Mostly Sunny | 2 to 6 mph W | 2% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms | 7 mph NNE | 50% |
| Monday | 81°F | Showers And Thunderstorms Likely | 5 to 10 mph NE | 67% |
| Monday Night | 58°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 67% |
| Tuesday | 72°F | Chance Showers And Thunderstorms | 7 to 12 mph NNE | 36% |
| Tuesday Night | 54°F | Mostly Cloudy | 3 to 12 mph N | 11% |
| Wednesday | 74°F | Mostly Sunny | 5 to 10 mph N | 4% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 8 mph NNE | 1% |
| Thursday | 76°F | Mostly Sunny | 2 to 8 mph N | 2% |
| Thursday Night | 56°F | Partly Cloudy | 2 to 7 mph NNE | 3% |
| Friday | 77°F | Mostly Sunny | 2 to 8 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Walnut Hill, IL
Last spring frost
Apr 9
First fall frost
Oct 24
Growing season
196 days
Hardiness zone
6b
Explore more for Walnut Hill, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Iuka 12 Sw, Il (3.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.