Clarendon Hills, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clarendon Hills, a village in Dupage County, Illinois.
Overnight
65°F
Patchy Fog
Patchy fog and showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy. Low around 65, with temperatures rising to around 68 overnight. East northeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
7-day forecast for Clarendon Hills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Patchy Fog | 5 mph ENE | 100% |
| Sunday | 67°F | Patchy Fog | 10 to 15 mph NNE | 100% |
| Sunday Night | 58°F | Chance Rain Showers | 15 mph ENE | 26% |
| Monday | 64°F | Chance Rain Showers | 15 mph ENE | 39% |
| Monday Night | 55°F | Chance Rain Showers | 10 to 15 mph ENE | 27% |
| Tuesday | 62°F | Chance Rain Showers | 10 to 15 mph NE | 27% |
| 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 to 10 mph NE | 10% |
| Friday | 71°F | Partly Sunny | 5 to 10 mph NE | 10% |
| Friday Night | 57°F | Mostly Cloudy | 0 to 10 mph NE | 2% |
| Saturday | 73°F | Mostly Sunny | 0 to 5 mph NE | 5% |
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 Sep 20, 2026.