Clarendon Hills, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clarendon Hills, a village in Dupage County, Illinois.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South southwest wind around 10 mph.
7-day forecast for Clarendon Hills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 10 mph SSW | 1% |
| Tonight | 69°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 22% |
| Wednesday | 81°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph SW | 68% |
| Wednesday Night | 66°F | Showers And Thunderstorms | 5 mph W | 90% |
| Thursday | 79°F | Rain Showers Likely | 5 mph NE | 72% |
| Thursday Night | 64°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 27% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph SSW | 4% |
| Friday Night | 66°F | Mostly Clear | 0 to 5 mph SSW | 8% |
| Saturday | 84°F | Mostly Sunny | 5 to 10 mph SSW | 9% |
| Saturday Night | 70°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 18% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SW | 18% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms | 5 to 15 mph SSW | 42% |
| Monday | 86°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 42% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 10 mph WSW | 46% |
Forecast source: National Weather Service (api.weather.gov) for Clarendon Hills (41.798, -87.957). Updated through the day.
Growing snapshot for Clarendon Hills
Last spring frost
Apr 28
First fall frost
Oct 16
Growing season
169 days
Hardiness zone
6a
More local growing data for Clarendon Hills: nearby ZIP 60514 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Lisle-Morton Arboretum, Il (5.8 mi from Clarendon Hills). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.