Rantoul, IL Weather & Growing Conditions
Overnight
59°F
Light Rain
Rain. Cloudy, with a low around 59. South wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Light Rain | 13 to 16 mph S | 88% |
| Wednesday | 63°F | Chance Drizzle | 12 to 15 mph SW | 30% |
| Wednesday Night | 46°F | Slight Chance Drizzle then Mostly Cloudy | 12 mph SW | 20% |
| Thursday | 60°F | Mostly Cloudy then Slight Chance Light Rain | 10 to 16 mph WSW | 17% |
| Thursday Night | 42°F | Chance Light Rain | 7 mph NW | 30% |
| Friday | 53°F | Mostly Cloudy | 10 mph NNW | 12% |
| Friday Night | 33°F | Partly Cloudy | 3 to 8 mph NNW | 0% |
| Saturday | 53°F | Sunny | 6 mph NW | 0% |
| Saturday Night | 32°F | Mostly Clear | 3 mph WNW | 1% |
| Sunday | 58°F | Sunny | 3 to 8 mph WNW | 2% |
| Sunday Night | 33°F | Clear | 5 mph W | 0% |
| Monday | 63°F | Sunny | 2 to 7 mph SW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 mph WSW | 1% |
| Tuesday | 66°F | Sunny | 5 mph WNW | 0% |
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 Nov 4, 2026.