Walnut Hill, IL Weather & Growing Conditions
Today
86°F
Sunny
Sunny. High near 86, with temperatures falling to around 84 in the afternoon. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 0 mph | 0% |
| Tonight | 64°F | Mostly Clear | 1 mph E | 0% |
| Wednesday | 88°F | Sunny | 1 mph S | 0% |
| Wednesday Night | 69°F | Partly Cloudy then Chance Showers And Thunderstorms | 2 mph S | 26% |
| Thursday | 86°F | Chance Showers And Thunderstorms | 3 mph SSW | 52% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms | 2 mph SSE | 58% |
| Friday | 86°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 2 mph SW | 58% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 1 mph SW | 38% |
| Saturday | 88°F | Chance Showers And Thunderstorms | 2 mph SSW | 38% |
| Saturday Night | 70°F | Partly Cloudy | 2 mph S | 13% |
| Sunday | 90°F | Sunny | 2 to 7 mph SSW | 8% |
| Sunday Night | 72°F | Mostly Clear | 6 mph SSW | 5% |
| Monday | 91°F | Sunny | 3 to 7 mph SSW | 6% |
| Monday Night | 73°F | Partly Cloudy | 6 mph SSW | 10% |
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 Aug 4, 2026.