Rantoul, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rantoul, a village in Champaign County, Illinois.
This Afternoon
63°F
Slight Chance Drizzle
A slight chance of drizzle. Cloudy. High near 63, with temperatures falling to around 58 in the afternoon. West southwest wind around 12 mph, with gusts as high as 17 mph.
7-day forecast for Rantoul
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Slight Chance Drizzle | 12 mph WSW | 10% |
| Tonight | 45°F | Slight Chance Drizzle then Mostly Cloudy | 9 mph SW | 10% |
| Thursday | 57°F | Mostly Cloudy then Chance Light Rain | 8 to 15 mph WSW | 28% |
| Thursday Night | 40°F | Chance Light Rain then Cloudy | 6 to 9 mph NW | 36% |
| Friday | 51°F | Partly Sunny | 8 to 12 mph NNW | 5% |
| Friday Night | 31°F | Partly Cloudy | 3 to 7 mph NNW | 0% |
| Saturday | 52°F | Sunny | 5 mph NW | 0% |
| Saturday Night | 30°F | Mostly Clear | 3 mph WNW | 0% |
| Sunday | 59°F | Sunny | 3 to 8 mph W | 0% |
| Sunday Night | 33°F | Mostly Clear | 5 mph W | 0% |
| Monday | 63°F | Sunny | 2 to 7 mph WSW | 0% |
| Monday Night | 38°F | Clear | 6 mph WSW | 0% |
| Tuesday | 64°F | Sunny | 5 mph W | 2% |
| Tuesday Night | 37°F | Mostly Clear | 2 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Rantoul (40.303, -88.155). Updated through the day.
Growing snapshot for Rantoul
Last spring frost
Apr 21
First fall frost
Oct 18
Growing season
179 days
Hardiness zone
6a
More local growing data for Rantoul: nearby ZIP 61866 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Bondville
Broadlands
Champaign
Dewey
Fisher
Foosland
Gifford
Homer
Ivesdale
Lake of the Woods
Longview
Ludlow
Mahomet
Ogden
Penfield
Pesotum
Philo
Royal
Sadorus
Savoy
Seymour
Sidney
St. Joseph
Thomasboro
Tolono
Urbana
Climate data from the nearest NOAA station, Rantoul, Il (0.1 mi from Rantoul). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.