Leland Grove, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Leland Grove, a city in Sangamon County, Illinois.
This Afternoon
89°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 4pm and 5pm. Mostly sunny, with a high near 89. East northeast wind around 7 mph. Chance of precipitation is 20%.
7-day forecast for Leland Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 89°F | Slight Chance Showers And Thunderstorms | 7 mph ENE | 15% |
| Tonight | 73°F | Partly Cloudy | 8 mph ESE | 9% |
| Saturday | 93°F | Partly Sunny | 9 mph SSW | 11% |
| Saturday Night | 71°F | Mostly Cloudy then Chance Showers And Thunderstorms | 7 mph SSW | 28% |
| Sunday | 87°F | Chance Rain Showers | 3 to 9 mph NNW | 53% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 8 to 12 mph NE | 69% |
| Monday | 73°F | Showers And Thunderstorms Likely | 9 to 13 mph NE | 69% |
| Monday Night | 57°F | Chance Showers And Thunderstorms | 8 to 13 mph NE | 48% |
| Tuesday | 70°F | Chance Rain Showers then Mostly Cloudy | 12 mph NNE | 32% |
| Tuesday Night | 53°F | Mostly Cloudy | 5 to 12 mph NNE | 4% |
| Wednesday | 73°F | Partly Sunny | 6 to 9 mph NNE | 2% |
| Wednesday Night | 55°F | Partly Cloudy | 2 to 8 mph NNE | 1% |
| Thursday | 74°F | Mostly Sunny | 3 to 7 mph NNE | 3% |
| Thursday Night | 57°F | Partly Cloudy | 2 to 6 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Leland Grove (39.779, -89.684). Updated through the day.
Growing snapshot for Leland Grove
Last spring frost
Apr 15
First fall frost
Oct 22
Growing season
188 days
Hardiness zone
6a
More local growing data for Leland Grove: nearby ZIP 62704 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Springfield #2, Il (1.6 mi from Leland Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.