Millbrook, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Millbrook, a village in Kendall County, Illinois.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South wind 0 to 10 mph.
7-day forecast for Millbrook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 0 to 10 mph S | 2% |
| Tonight | 67°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 29% |
| Wednesday | 80°F | Showers And Thunderstorms Likely | 0 to 5 mph WSW | 69% |
| Wednesday Night | 65°F | Showers And Thunderstorms | 0 to 5 mph NNW | 88% |
| Thursday | 80°F | Rain Showers Likely then Chance Showers And Thunderstorms | 0 to 5 mph ESE | 61% |
| Thursday Night | 62°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 25% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph SE | 6% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph S | 9% |
| Saturday | 85°F | Mostly Sunny | 5 to 10 mph SW | 11% |
| Saturday Night | 69°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 17% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SW | 17% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 34% |
| Monday | 86°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 34% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 10 mph WNW | 41% |
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 Aug 4, 2026.