Rantoul, IL Weather & Growing Conditions
Tonight
67°F
Partly Cloudy
Partly cloudy, with a low around 67. East southeast wind around 8 mph, with gusts as high as 17 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 67°F | Partly Cloudy | 8 mph ESE | 9% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 9 mph SSE | 35% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 7 mph S | 41% |
| Sunday | 81°F | Showers And Thunderstorms Likely | 3 to 10 mph NNE | 62% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 13 mph NE | 62% |
| Monday | 68°F | Showers And Thunderstorms Likely | 14 mph ENE | 70% |
| Monday Night | 53°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 49% |
| Tuesday | 66°F | Chance Rain Showers | 13 mph NE | 29% |
| Tuesday Night | 52°F | Mostly Cloudy | 7 to 13 mph NNE | 10% |
| Wednesday | 68°F | Partly Sunny | 7 to 10 mph NNE | 5% |
| Wednesday Night | 52°F | Mostly Cloudy | 5 to 9 mph NNE | 5% |
| Thursday | 71°F | Mostly Sunny | 5 to 8 mph N | 5% |
| Thursday Night | 53°F | Partly Cloudy | 7 mph NNE | 4% |
| Friday | 72°F | Mostly Sunny | 7 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rantoul, IL
Last spring frost
Apr 21
First fall frost
Oct 18
Growing season
179 days
Hardiness zone
6a
Explore more for Rantoul, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Rantoul, Il (0.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.