Walnut Hill, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Walnut Hill, a village in Jefferson County, Illinois.
Tonight
56°F
Rain
Rain and a slight chance of thunderstorms. Cloudy. Low around 56, with temperatures rising to around 58 overnight. South wind 9 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 100%.
7-day forecast for Walnut Hill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Rain | 9 to 16 mph S | 99% |
| Wednesday | 66°F | Slight Chance Light Rain then Mostly Cloudy | 7 to 14 mph WSW | 18% |
| Wednesday Night | 43°F | Partly Cloudy | 5 mph WSW | 0% |
| Thursday | 67°F | Sunny | 3 to 12 mph WSW | 0% |
| Thursday Night | 43°F | Mostly Cloudy | 2 mph WNW | 5% |
| Friday | 59°F | Mostly Cloudy | 3 to 12 mph NNW | 3% |
| Friday Night | 38°F | Partly Cloudy | 2 to 6 mph NNW | 1% |
| Saturday | 56°F | Mostly Sunny | 5 mph NNW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 61°F | Sunny | 1 to 8 mph W | 6% |
| Sunday Night | 34°F | Mostly Clear | 3 mph NW | 5% |
| Monday | 65°F | Sunny | 1 to 9 mph WSW | 3% |
| Monday Night | 38°F | Mostly Clear | 3 mph SW | 0% |
| Tuesday | 68°F | Sunny | 2 to 6 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Walnut Hill (38.478, -89.044). Updated through the day.
Growing snapshot for Walnut Hill
Last spring frost
Apr 9
First fall frost
Oct 24
Growing season
196 days
Hardiness zone
6b
More local growing data for Walnut Hill: nearby ZIP 62893 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Iuka 12 Sw, Il (3.7 mi from Walnut Hill). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.