Walnut Hill, IL Weather & Growing Conditions
Tonight
71°F
Slight Chance Showers And Thunderstorms then Partly Cloudy
A slight chance of showers and thunderstorms before 10pm. Partly cloudy. Low around 71, with temperatures rising to around 73 overnight. Southeast wind around 3 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SE | 24% |
| Saturday | 97°F | Sunny | 2 to 6 mph SW | 6% |
| Saturday Night | 72°F | Partly Cloudy | 3 mph SSW | 4% |
| Sunday | 95°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 7 mph W | 19% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph NNE | 40% |
| Monday | 83°F | Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 10 mph NNE | 54% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 5 to 10 mph NNE | 54% |
| Tuesday | 74°F | Chance Showers And Thunderstorms then Partly Sunny | 7 to 12 mph NNE | 28% |
| Tuesday Night | 55°F | Mostly Cloudy | 3 to 12 mph NNE | 7% |
| Wednesday | 75°F | Mostly Sunny | 5 to 9 mph N | 3% |
| Wednesday Night | 55°F | Partly Cloudy | 2 to 8 mph NNE | 2% |
| Thursday | 76°F | Mostly Sunny | 2 to 8 mph NNE | 2% |
| Thursday Night | 57°F | Partly Cloudy | 2 to 6 mph NNE | 2% |
| 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.