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Bannockburn, IL Weather & Growing Conditions

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

Overnight
62°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 4am, then showers and thunderstorms. Cloudy. Low around 62, with temperatures rising to around 64 overnight. East southeast wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

7-day forecast for Bannockburn

WhenTempForecastWindPrecip
Overnight 62°F Showers And Thunderstorms Likely 10 to 15 mph ESE 84%
Saturday 75°F Showers And Thunderstorms then Showers And Thunderstorms Likely 5 to 10 mph SSE 100%
Saturday Night 61°F Showers And Thunderstorms 5 to 10 mph E 94%
Sunday 69°F Showers And Thunderstorms Likely 10 to 20 mph NNE 57%
Sunday Night 55°F Slight Chance Rain Showers 15 to 20 mph NE 15%
Monday 65°F Slight Chance Rain Showers 15 to 20 mph ENE 20%
Monday Night 52°F Mostly Cloudy 15 mph ENE 11%
Tuesday 63°F Mostly Cloudy 15 mph NE 11%
Tuesday Night 52°F Mostly Cloudy 10 to 15 mph NE 8%
Wednesday 64°F Partly Sunny 10 to 15 mph NE 14%
Wednesday Night 53°F Mostly Cloudy 5 to 10 mph NE 6%
Thursday 66°F Partly Sunny 5 to 10 mph NNE 4%
Thursday Night 53°F Mostly Cloudy 5 mph NNE 3%
Friday 69°F Partly Sunny 5 to 10 mph NE 5%

Forecast source: National Weather Service (api.weather.gov) for Bannockburn (42.192, -87.870). Updated through the day.

Growing snapshot for Bannockburn

Last spring frost
Apr 19
First fall frost
Oct 26
Growing season
190 days
Hardiness zone
6a

More local growing data for Bannockburn: nearby ZIP 60015 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Chicago Palwaukee Ap, Il (3.9 mi from Bannockburn). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.