Mundelein, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mundelein, a village in Lake County, Illinois.
Today
64°F
Scattered Rain Showers then Patchy Drizzle
Scattered rain showers before 10am, then patchy drizzle and isolated rain showers. Mostly cloudy. High near 64, with temperatures falling to around 55 in the afternoon. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Mundelein
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Scattered Rain Showers then Patchy Drizzle | 15 mph SW | 25% |
| Tonight | 48°F | Patchy Drizzle then Mostly Cloudy | 15 mph SW | 13% |
| Thursday | 56°F | Chance Rain Showers | 10 to 15 mph WSW | 35% |
| Thursday Night | 40°F | Rain Showers Likely | 10 to 15 mph NW | 58% |
| Friday | 49°F | Mostly Cloudy | 10 to 15 mph NNW | 13% |
| Friday Night | 34°F | Partly Cloudy | 5 to 10 mph NNW | 2% |
| Saturday | 51°F | Mostly Sunny | 5 mph NW | 0% |
| Saturday Night | 35°F | Partly Cloudy | 0 to 5 mph W | 0% |
| Sunday | 56°F | Sunny | 5 to 10 mph W | 6% |
| Sunday Night | 36°F | Mostly Clear | 5 mph W | 1% |
| Monday | 60°F | Mostly Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 41°F | Partly Cloudy | 5 mph WSW | 1% |
| Tuesday | 61°F | Sunny | 5 mph WNW | 0% |
| Tuesday Night | 39°F | Partly Cloudy | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov) for Mundelein (42.269, -88.011). Updated through the day.
Growing snapshot for Mundelein
Last spring frost
Apr 29
First fall frost
Oct 20
Growing season
172 days
Hardiness zone
5b
More local growing data for Mundelein: nearby ZIP 60060 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
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Climate data from the nearest NOAA station, Mundelein 4 Wsw, Il (2.2 mi from Mundelein). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.