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Glen Ellyn, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Glen Ellyn, a village in Dupage County, Illinois.

Tonight
62°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. East southeast wind 10 to 15 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast for Glen Ellyn

WhenTempForecastWindPrecip
Tonight 62°F Mostly Cloudy then Chance Showers And Thunderstorms 10 to 15 mph ESE 48%
Saturday 77°F Showers And Thunderstorms Likely 10 to 15 mph SE 84%
Saturday Night 64°F Showers And Thunderstorms Likely then Showers And Thunderstorms 5 to 10 mph NNE 82%
Sunday 68°F Showers And Thunderstorms 10 to 15 mph NNE 82%
Sunday Night 56°F Rain Showers Likely 15 mph NE 60%
Monday 64°F Chance Rain Showers 15 mph ENE 49%
Monday Night 53°F Chance Rain Showers 10 to 15 mph ENE 32%
Tuesday 62°F Slight Chance Rain Showers 10 to 15 mph NE 23%
Tuesday Night 53°F Slight Chance Rain Showers then Mostly Cloudy 5 to 10 mph NE 17%
Wednesday 65°F Partly Sunny 10 mph NE 9%
Wednesday Night 53°F Mostly Cloudy 5 to 10 mph NNE 4%
Thursday 68°F Partly Sunny 5 to 10 mph NNE 6%
Thursday Night 54°F Mostly Cloudy 5 mph NNE 3%
Friday 70°F Mostly Sunny 5 to 10 mph NNE 5%

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.