Buffalo Grove, IL Weather & Growing Conditions
This Afternoon
70°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5pm, then a chance of showers and thunderstorms. Cloudy, with a high near 70. East southeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph ESE | 54% |
| Tonight | 62°F | Showers And Thunderstorms | 5 to 10 mph ENE | 94% |
| Sunday | 69°F | Showers And Thunderstorms Likely | 10 to 15 mph NNE | 57% |
| Sunday Night | 55°F | Slight Chance Rain Showers | 15 mph NE | 17% |
| Monday | 64°F | Slight Chance Rain Showers | 15 mph ENE | 22% |
| Monday Night | 52°F | Mostly Cloudy | 10 to 15 mph ENE | 13% |
| Tuesday | 62°F | Mostly Cloudy | 10 to 15 mph NE | 11% |
| Tuesday Night | 52°F | Mostly Cloudy | 5 to 15 mph NE | 7% |
| Wednesday | 64°F | Partly Sunny | 5 to 10 mph NE | 14% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 to 10 mph NE | 5% |
| Thursday | 66°F | Partly Sunny | 5 to 10 mph NNE | 4% |
| Thursday Night | 52°F | Mostly Cloudy | 0 to 5 mph NNE | 4% |
| Friday | 69°F | Partly Sunny | 5 to 10 mph NNE | 5% |
| Friday Night | 53°F | Partly Cloudy | 0 to 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Buffalo Grove, IL
Last spring frost
Apr 19
First fall frost
Oct 26
Growing season
190 days
Hardiness zone
6a
Explore more for Buffalo Grove, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Chicago Palwaukee Ap, Il (4.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.