La Grange, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for La Grange, a village in Cook County, Illinois.
Tonight
63°F
Slight Chance Rain Showers then Chance Showers And Thunderstorms
A slight chance of rain showers before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 63. East southeast wind 10 to 15 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for La Grange
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 10 to 15 mph ESE | 46% |
| Saturday | 77°F | Showers And Thunderstorms Likely | 10 to 15 mph SE | 84% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 to 10 mph NE | 81% |
| Sunday | 69°F | Showers And Thunderstorms | 10 to 15 mph NNE | 81% |
| Sunday Night | 57°F | Rain Showers Likely | 15 mph NE | 61% |
| Monday | 64°F | Chance Rain Showers | 15 mph ENE | 53% |
| Monday Night | 55°F | Chance Rain Showers | 10 to 15 mph ENE | 33% |
| Tuesday | 63°F | Slight Chance Rain Showers | 10 to 15 mph NE | 24% |
| Tuesday Night | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 15 mph NE | 17% |
| Wednesday | 65°F | Partly Sunny | 10 mph NNE | 10% |
| Wednesday Night | 55°F | Mostly Cloudy | 5 to 10 mph NNE | 4% |
| Thursday | 68°F | Partly Sunny | 5 to 10 mph NNE | 7% |
| Thursday Night | 56°F | Mostly Cloudy | 5 to 10 mph NNE | 3% |
| Friday | 70°F | Mostly Sunny | 5 to 10 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov) for La Grange (41.807, -87.874). Updated through the day.
Growing snapshot for La Grange
Last spring frost
Apr 19
First fall frost
Oct 22
Growing season
183 days
Hardiness zone
6a
More local growing data for La Grange: nearby ZIP 60525 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Little Red School Hse, Il (5.2 mi from La Grange). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.