Millbrook, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Millbrook, a village in Kendall County, Illinois.
Tonight
58°F
Rain Showers
Rain showers. Cloudy. Low around 58, with temperatures rising to around 61 overnight. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Millbrook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Rain Showers | 15 mph S | 88% |
| Wednesday | 62°F | Chance Rain Showers | 15 mph SSW | 47% |
| Wednesday Night | 47°F | Slight Chance Rain Showers then Mostly Cloudy | 15 mph SW | 15% |
| Thursday | 57°F | Chance Rain Showers | 10 to 15 mph WSW | 36% |
| Thursday Night | 43°F | Chance Rain Showers | 5 to 10 mph WNW | 38% |
| Friday | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph N | 22% |
| Friday Night | 35°F | Partly Cloudy | 5 to 10 mph NNW | 2% |
| Saturday | 52°F | Mostly Sunny | 5 mph WNW | 4% |
| Saturday Night | 34°F | Partly Cloudy | 0 to 5 mph WSW | 3% |
| Sunday | 58°F | Mostly Sunny | 5 to 10 mph W | 13% |
| Sunday Night | 35°F | Mostly Clear | 5 mph WNW | 6% |
| Monday | 62°F | Sunny | 5 to 10 mph WSW | 3% |
| Monday Night | 39°F | Mostly Clear | 5 to 10 mph W | 1% |
| Tuesday | 62°F | Sunny | 5 to 10 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Millbrook (41.607, -88.545). Updated through the day.
Growing snapshot for Millbrook
Last spring frost
Apr 28
First fall frost
Oct 13
Growing season
166 days
More local growing data for Millbrook: nearby ZIP 60536 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Chicago Aurora Muni Ap, Il (12.4 mi from Millbrook). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.