Wonder Lake, IL Weather & Growing Conditions
Today
62°F
Scattered Rain Showers then Patchy Drizzle
Scattered rain showers before 10am, then patchy drizzle and isolated rain showers. Mostly cloudy. High near 62, with temperatures falling to around 54 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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 62°F | Scattered Rain Showers then Patchy Drizzle | 15 mph SW | 26% |
| Tonight | 46°F | Patchy Drizzle | 15 mph SW | 19% |
| Thursday | 54°F | Chance Rain Showers | 10 to 15 mph W | 35% |
| Thursday Night | 39°F | Chance Rain Showers then Mostly Cloudy | 10 mph NNW | 48% |
| Friday | 48°F | Mostly Cloudy | 10 to 15 mph NNW | 11% |
| Friday Night | 32°F | Partly Cloudy | 0 to 10 mph NNW | 0% |
| Saturday | 50°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 32°F | Mostly Clear | 0 mph | 0% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 6% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph W | 0% |
| Monday | 60°F | Mostly Sunny | 0 to 10 mph WSW | 0% |
| Monday Night | 39°F | Partly Cloudy | 0 to 5 mph WSW | 1% |
| Tuesday | 61°F | Sunny | 0 to 5 mph WNW | 0% |
| Tuesday Night | 38°F | Partly Cloudy | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Wonder Lake, IL
Last spring frost
May 1
First fall frost
Oct 11
Growing season
162 days
Hardiness zone
5b
Explore more for Wonder Lake, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Mc Henry -Wg Stratton L&D, Il (8.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.