Buffalo Grove, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Buffalo Grove, a village in Lake County, Illinois.
This Afternoon
69°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a high near 69. East wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Buffalo Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Showers And Thunderstorms Likely | 5 mph E | 70% |
| Tonight | 63°F | Showers And Thunderstorms | 5 to 10 mph ENE | 100% |
| Sunday | 66°F | Showers And Thunderstorms | 10 to 15 mph NE | 87% |
| Sunday Night | 56°F | Slight Chance Rain Showers then Mostly Cloudy | 15 mph NE | 19% |
| Monday | 64°F | Chance Rain Showers | 15 mph ENE | 33% |
| Monday Night | 53°F | Slight Chance Rain Showers | 10 to 15 mph ENE | 21% |
| Tuesday | 63°F | Slight Chance Rain Showers | 10 to 15 mph NE | 21% |
| Tuesday Night | 53°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 15 mph NE | 15% |
| Wednesday | 64°F | Slight Chance Rain Showers | 5 to 10 mph NE | 17% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 to 10 mph NE | 7% |
| Thursday | 66°F | Partly Sunny | 5 mph NE | 3% |
| Thursday Night | 54°F | Mostly Cloudy | 0 to 5 mph NE | 13% |
| Friday | 70°F | Partly Sunny | 0 to 5 mph NE | 12% |
| Friday Night | 55°F | Partly Cloudy | 0 to 5 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Buffalo Grove (42.166, -87.962). Updated through the day.
Growing snapshot for Buffalo Grove
Last spring frost
Apr 19
First fall frost
Oct 26
Growing season
190 days
Hardiness zone
6a
More local growing data for Buffalo Grove: nearby ZIP 60089 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Chicago Palwaukee Ap, Il (4.4 mi from Buffalo Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.