Leland Grove, IL Weather & Growing Conditions
Tonight
54°F
Rain
Rain before 3am, then a slight chance of rain showers between 3am and 5am. Mostly cloudy, with a low around 54. South southwest wind 12 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Rain | 12 to 15 mph SSW | 94% |
| Wednesday | 60°F | Mostly Cloudy | 10 to 14 mph SW | 11% |
| Wednesday Night | 45°F | Mostly Cloudy | 9 mph SW | 1% |
| Thursday | 61°F | Mostly Sunny | 8 to 12 mph WSW | 4% |
| Thursday Night | 44°F | Mostly Cloudy then Slight Chance Light Rain | 6 mph NW | 22% |
| Friday | 56°F | Mostly Cloudy | 6 to 9 mph NNW | 12% |
| Friday Night | 38°F | Mostly Cloudy | 1 to 8 mph NNW | 4% |
| Saturday | 54°F | Mostly Sunny | 1 to 5 mph NW | 1% |
| Saturday Night | 36°F | Partly Cloudy | 2 mph W | 1% |
| Sunday | 60°F | Sunny | 2 to 8 mph W | 7% |
| Sunday Night | 36°F | Mostly Clear | 6 mph WNW | 5% |
| Monday | 64°F | Sunny | 3 to 9 mph SW | 2% |
| Monday Night | 41°F | Mostly Clear | 3 to 7 mph WSW | 1% |
| Tuesday | 67°F | Sunny | 6 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Leland Grove, IL
Last spring frost
Apr 15
First fall frost
Oct 22
Growing season
188 days
Hardiness zone
6a
Explore more for Leland Grove, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Springfield #2, Il (1.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.