Wheaton, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wheaton, a city in Dupage County, Illinois.
This Afternoon
70°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy. High near 70, with temperatures falling to around 67 in the afternoon. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Wheaton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Chance Rain Showers | 15 mph S | 47% |
| Tonight | 60°F | Rain Showers | 15 mph S | 89% |
| Wednesday | 63°F | Rain Showers Likely | 15 mph SSW | 57% |
| Wednesday Night | 48°F | Slight Chance Rain Showers | 15 mph SW | 16% |
| Thursday | 56°F | Chance Rain Showers | 10 to 15 mph WSW | 29% |
| Thursday Night | 43°F | Chance Rain Showers | 5 to 10 mph WNW | 37% |
| Friday | 52°F | Chance Rain Showers | 10 to 15 mph N | 26% |
| Friday Night | 37°F | Mostly Cloudy | 5 to 10 mph NNW | 8% |
| Saturday | 52°F | Mostly Sunny | 5 mph WNW | 7% |
| Saturday Night | 36°F | Partly Cloudy | 0 to 5 mph WSW | 4% |
| Sunday | 56°F | Mostly Sunny then Slight Chance Rain | 5 to 10 mph W | 15% |
| Sunday Night | 37°F | Mostly Clear | 5 to 10 mph WNW | 8% |
| Monday | 60°F | Mostly Sunny | 5 to 10 mph WSW | 3% |
| Monday Night | 41°F | Mostly Clear | 5 to 10 mph WSW | 2% |
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 Nov 4, 2026.