Glendale Heights, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glendale Heights, a village in Dupage County, Illinois.
This Afternoon
63°F
Slight Chance Rain Showers
A slight chance of rain showers and a slight chance of drizzle. Cloudy. High near 63, with temperatures falling to around 56 in the afternoon. Southwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for Glendale Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Slight Chance Rain Showers | 15 mph SW | 10% |
| Tonight | 47°F | Slight Chance Rain Showers then Cloudy | 15 mph SW | 14% |
| Thursday | 53°F | Rain Likely | 10 to 15 mph WSW | 56% |
| Thursday Night | 39°F | Chance Rain then Cloudy | 10 mph NNW | 50% |
| Friday | 48°F | Partly Sunny | 10 to 15 mph NNW | 3% |
| Friday Night | 34°F | Partly Cloudy | 5 to 10 mph NNW | 0% |
| Saturday | 50°F | Sunny | 5 mph NW | 0% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 56°F | Sunny | 5 to 10 mph W | 1% |
| Sunday Night | 36°F | Mostly Clear | 5 mph W | 0% |
| Monday | 60°F | Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 to 10 mph WSW | 0% |
| Tuesday | 60°F | Sunny | 5 mph WNW | 1% |
| Tuesday Night | 40°F | Partly Cloudy | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Glendale Heights (41.919, -88.078). Updated through the day.
Growing snapshot for Glendale Heights
Last spring frost
Apr 28
First fall frost
Oct 16
Growing season
169 days
Hardiness zone
5b
More local growing data for Glendale Heights: nearby ZIP 60139 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 (7.3 mi from Glendale Heights). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.