Wheaton, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wheaton, a city in Dupage County, Illinois.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South southwest wind 5 to 10 mph.
7-day forecast for Wheaton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 to 10 mph SSW | 3% |
| Tonight | 68°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 mph SSW | 31% |
| Wednesday | 80°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph WSW | 72% |
| Wednesday Night | 65°F | Showers And Thunderstorms | 0 to 5 mph WNW | 89% |
| Thursday | 79°F | Rain Showers Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph E | 66% |
| Thursday Night | 63°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 23% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph S | 5% |
| Friday Night | 65°F | Mostly Clear | 0 to 5 mph SSW | 8% |
| Saturday | 84°F | Mostly Sunny | 5 to 10 mph SW | 10% |
| Saturday Night | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 19% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SW | 19% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 41% |
| Monday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 41% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 5 to 10 mph WSW | 46% |
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 Aug 4, 2026.