Wonder Lake, IL Weather & Growing Conditions
Today
75°F
Showers And Thunderstorms
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and thunderstorms likely. Cloudy, with a high near 75. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Showers And Thunderstorms | 5 to 10 mph S | 80% |
| Tonight | 60°F | Showers And Thunderstorms | 5 to 10 mph E | 93% |
| Sunday | 68°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 50% |
| Sunday Night | 54°F | Mostly Cloudy | 15 mph NE | 13% |
| Monday | 63°F | Chance Rain Showers | 15 mph ENE | 26% |
| Monday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph ENE | 16% |
| Tuesday | 61°F | Mostly Cloudy | 10 to 15 mph NE | 13% |
| Tuesday Night | 49°F | Mostly Cloudy | 5 to 10 mph NE | 5% |
| Wednesday | 63°F | Partly Sunny | 5 to 10 mph NE | 7% |
| Wednesday Night | 50°F | Mostly Cloudy | 0 to 5 mph NE | 3% |
| Thursday | 66°F | Partly Sunny | 0 to 5 mph NE | 5% |
| Thursday Night | 50°F | Mostly Cloudy | 0 to 5 mph NE | 5% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph NE | 4% |
| Friday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 3% |
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 Sep 19, 2026.