Wheaton, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wheaton, a city in Dupage County, Illinois.
This Afternoon
72°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy. High near 72, with temperatures falling to around 70 in the afternoon. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
7-day forecast for Wheaton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Chance Rain Showers | 10 mph E | 35% |
| Tonight | 62°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 10 mph E | 47% |
| Saturday | 77°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 83% |
| Saturday Night | 64°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 to 10 mph NE | 82% |
| Sunday | 68°F | Showers And Thunderstorms | 10 to 15 mph NNE | 82% |
| Sunday Night | 56°F | Rain Showers Likely | 15 mph NE | 61% |
| Monday | 64°F | Chance Rain Showers | 15 mph ENE | 49% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 15 mph ENE | 31% |
| Tuesday | 62°F | Slight Chance Rain Showers | 10 to 15 mph NE | 22% |
| Tuesday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 16% |
| Wednesday | 65°F | Partly Sunny | 10 mph NNE | 8% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 to 10 mph NNE | 4% |
| Thursday | 68°F | Partly Sunny | 5 to 10 mph NNE | 5% |
| Thursday Night | 54°F | Mostly Cloudy | 5 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Wheaton (41.857, -88.108). Updated through the day.
Growing snapshot for Wheaton
Last spring frost
Apr 28
First fall frost
Oct 16
Growing season
169 days
Hardiness zone
5b
More local growing data for Wheaton: nearby ZIP 60187 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Lisle-Morton Arboretum, Il (4.6 mi from Wheaton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.