Willowbrook, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Willowbrook, a village in Dupage County, Illinois.
This Afternoon
71°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a high near 71. East southeast wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Willowbrook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Showers And Thunderstorms Likely | 5 mph ESE | 59% |
| Tonight | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph E | 100% |
| Sunday | 67°F | Showers And Thunderstorms | 10 to 15 mph NNE | 85% |
| Sunday Night | 58°F | Chance Rain Showers | 15 mph ENE | 30% |
| Monday | 64°F | Chance Rain Showers | 15 mph ENE | 40% |
| Monday Night | 55°F | Chance Rain Showers | 10 to 15 mph ENE | 27% |
| Tuesday | 62°F | Chance Rain Showers | 10 to 15 mph NE | 28% |
| Tuesday Night | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 18% |
| Wednesday | 64°F | Mostly Cloudy | 10 mph NE | 13% |
| Wednesday Night | 55°F | Mostly Cloudy | 5 to 10 mph NE | 6% |
| Thursday | 67°F | Partly Sunny | 5 to 10 mph NE | 3% |
| Thursday Night | 56°F | Mostly Cloudy | 5 mph NE | 10% |
| Friday | 72°F | Partly Sunny | 5 to 10 mph NE | 9% |
| Friday Night | 56°F | Partly Cloudy | 0 to 10 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Willowbrook (41.767, -87.942). Updated through the day.
Growing snapshot for Willowbrook
Last spring frost
Apr 19
First fall frost
Oct 22
Growing season
183 days
Hardiness zone
6a
More local growing data for Willowbrook: nearby ZIP 60527 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Little Red School Hse, Il (3.6 mi from Willowbrook). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.