Glen Ellyn, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glen Ellyn, a village in Dupage County, Illinois.
Overnight
65°F
Mostly Clear
Mostly clear, with a low around 65. South wind around 5 mph.
7-day forecast for Glen Ellyn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 85°F | Mostly Sunny | 5 to 10 mph SSW | 2% |
| Tuesday Night | 68°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 mph SSW | 29% |
| 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 | 78°F | Rain Showers Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 67% |
| Thursday Night | 63°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 23% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph S | 4% |
| 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 SW | 42% |
| Monday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 42% |
Forecast source: National Weather Service (api.weather.gov) for Glen Ellyn (41.867, -88.063). Updated through the day.
Growing snapshot for Glen Ellyn
Last spring frost
Apr 28
First fall frost
Oct 16
Growing season
169 days
Hardiness zone
5b
More local growing data for Glen Ellyn: nearby ZIP 60137 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
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Climate data from the nearest NOAA station, Lisle-Morton Arboretum, Il (3.7 mi from Glen Ellyn). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.