Westmont, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Westmont, a village in Dupage County, Illinois.
This Afternoon
74°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a high near 74. Southeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Westmont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Showers And Thunderstorms Likely | 5 mph SE | 64% |
| Tonight | 65°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 to 10 mph ESE | 96% |
| Sunday | 69°F | Showers And Thunderstorms Likely | 10 to 15 mph NNE | 64% |
| Sunday Night | 57°F | Chance Rain Showers | 15 mph NE | 32% |
| Monday | 64°F | Chance Rain Showers | 15 mph ENE | 29% |
| Monday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 22% |
| Tuesday | 62°F | Slight Chance Rain Showers | 10 to 15 mph NE | 17% |
| Tuesday Night | 54°F | Mostly Cloudy | 10 to 15 mph NE | 9% |
| Wednesday | 64°F | Partly Sunny | 10 to 15 mph NE | 14% |
| Wednesday Night | 54°F | Mostly Cloudy | 5 to 10 mph NNE | 5% |
| Thursday | 66°F | Partly Sunny | 5 to 10 mph NNE | 3% |
| Thursday Night | 55°F | Mostly Cloudy | 5 to 10 mph NNE | 3% |
| Friday | 70°F | Partly Sunny | 5 to 10 mph NE | 4% |
| Friday Night | 55°F | Partly Cloudy | 5 to 10 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Westmont (41.794, -87.973). Updated through the day.
Growing snapshot for Westmont
Last spring frost
Apr 28
First fall frost
Oct 16
Growing season
169 days
Hardiness zone
6a
More local growing data for Westmont: nearby ZIP 60559 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Addison
Bartlett
Bensenville
Bloomingdale
Burr Ridge
Carol Stream
Clarendon Hills
Darien
Downers Grove
Elmhurst
Glen Ellyn
Glendale Heights
Hanover Park
Hinsdale
Itasca
Lisle
Lombard
Naperville
Oak Brook
Oakbrook Terrace
Roselle
Villa Park
Warrenville
Wayne
West Chicago
Wheaton
Willowbrook
Winfield
Wood Dale
Woodridge
Climate data from the nearest NOAA station, Lisle-Morton Arboretum, Il (5.3 mi from Westmont). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.