Bannockburn, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bannockburn, a village in Lake County, Illinois.
Today
64°F
Scattered Rain Showers then Patchy Drizzle
Scattered rain showers before 10am, then patchy drizzle and isolated rain showers. Mostly cloudy. High near 64, with temperatures falling to around 56 in the afternoon. South southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Bannockburn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Scattered Rain Showers then Patchy Drizzle | 15 mph SSW | 31% |
| Tonight | 48°F | Patchy Drizzle then Mostly Cloudy | 15 mph SW | 12% |
| Thursday | 56°F | Chance Rain Showers | 10 to 15 mph WSW | 35% |
| Thursday Night | 39°F | Rain Showers Likely | 10 to 15 mph NW | 64% |
| Friday | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 15 mph NNW | 18% |
| Friday Night | 36°F | Partly Cloudy | 5 to 15 mph NNW | 4% |
| Saturday | 51°F | Mostly Sunny | 5 mph NW | 1% |
| Saturday Night | 35°F | Partly Cloudy | 5 mph W | 0% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 6% |
| Sunday Night | 36°F | Mostly Clear | 5 mph W | 1% |
| Monday | 59°F | Mostly Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 40°F | Partly Cloudy | 5 mph WSW | 1% |
| Tuesday | 60°F | Sunny | 5 mph WNW | 0% |
| Tuesday Night | 40°F | Partly Cloudy | 0 mph | 1% |
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
Nearby towns & communities
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Lindenhurst
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 Nov 4, 2026.