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Buffalo Grove, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Buffalo Grove, a village in Lake County, Illinois.

Today
76°F
Showers And Thunderstorms
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 5pm, then showers and thunderstorms likely. Cloudy. High near 76, with temperatures falling to around 73 in the afternoon. South southeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

7-day forecast for Buffalo Grove

WhenTempForecastWindPrecip
Today 76°F Showers And Thunderstorms 5 to 10 mph SSE 98%
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 63°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 NE 4%
Thursday Night 53°F Mostly Cloudy 0 to 5 mph NNE 4%
Friday 69°F Partly Sunny 5 to 10 mph NNE 5%
Friday Night 54°F Partly Cloudy 0 to 5 mph NE 4%

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.