Glen Ellyn, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glen Ellyn, a village in Dupage County, Illinois.
Today
77°F
Showers And Thunderstorms
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Cloudy. High near 77, with temperatures falling to around 74 in the afternoon. South southeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Glen Ellyn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Showers And Thunderstorms | 5 to 10 mph SSE | 100% |
| Tonight | 64°F | Showers And Thunderstorms | 5 to 10 mph E | 96% |
| Sunday | 69°F | Showers And Thunderstorms Likely | 10 to 15 mph NNE | 62% |
| Sunday Night | 57°F | Chance Rain Showers | 15 mph NE | 30% |
| Monday | 64°F | Chance Rain Showers | 15 mph ENE | 29% |
| Monday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 23% |
| Tuesday | 62°F | Slight Chance Rain Showers | 10 to 15 mph NE | 16% |
| Tuesday Night | 53°F | Mostly Cloudy | 10 to 15 mph NE | 9% |
| Wednesday | 64°F | Partly Sunny | 10 to 15 mph NE | 13% |
| Wednesday Night | 54°F | Mostly Cloudy | 5 to 10 mph NNE | 4% |
| Thursday | 66°F | Partly Sunny | 5 to 10 mph NNE | 3% |
| Thursday Night | 54°F | Mostly Cloudy | 5 to 10 mph NNE | 3% |
| Friday | 70°F | Partly Sunny | 5 to 10 mph NE | 4% |
| Friday Night | 54°F | Partly Cloudy | 5 to 10 mph NE | 4% |
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
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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 Sep 19, 2026.