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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
60°F
Rain
Rain. Cloudy. Low around 60, with temperatures rising to around 62 overnight. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Glen Ellyn

WhenTempForecastWindPrecip
Tonight 60°F Rain 15 mph S 88%
Wednesday 63°F Rain Likely then Rain Showers Likely 15 mph SSW 59%
Wednesday Night 48°F Slight Chance Rain Showers then Mostly Cloudy 15 mph SW 16%
Thursday 56°F Chance Rain Showers 10 to 15 mph WSW 28%
Thursday Night 44°F Chance Rain Showers 5 to 10 mph WNW 40%
Friday 52°F Chance Rain Showers 10 to 15 mph N 27%
Friday Night 38°F Mostly Cloudy 5 to 10 mph NNW 9%
Saturday 51°F Mostly Sunny 5 mph WNW 7%
Saturday Night 36°F Partly Cloudy 5 mph WSW 5%
Sunday 56°F Mostly Sunny then Slight Chance Rain 5 to 10 mph W 15%
Sunday Night 38°F Mostly Clear 5 to 10 mph W 9%
Monday 60°F Sunny 5 to 10 mph WSW 3%
Monday Night 42°F Mostly Clear 5 to 10 mph WSW 2%
Tuesday 61°F Mostly Sunny 5 to 10 mph WNW 1%

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 Nov 4, 2026.