Zion, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Zion, a city in Lake County, Illinois.
Tonight
60°F
Showers And Thunderstorms Likely
A slight chance of rain showers before 11pm, then showers and thunderstorms likely between 11pm and 5am, then showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 60. East wind 15 to 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Zion
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 60°F | Showers And Thunderstorms Likely | 15 to 20 mph E | 80% |
| Saturday | 74°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 15 to 20 mph SE | 97% |
| Saturday Night | 62°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 10 to 15 mph NE | 78% |
| Sunday | 67°F | Showers And Thunderstorms Likely | 15 to 20 mph NE | 68% |
| Sunday Night | 54°F | Chance Rain Showers | 20 mph NE | 40% |
| Monday | 65°F | Chance Rain Showers | 20 mph ENE | 36% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 20 mph ENE | 32% |
| Tuesday | 64°F | Slight Chance Rain Showers | 15 mph NE | 20% |
| Tuesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph ENE | 18% |
| Wednesday | 65°F | Partly Sunny | 10 mph NE | 12% |
| Wednesday Night | 52°F | Mostly Cloudy | 5 to 10 mph NNE | 5% |
| Thursday | 66°F | Partly Sunny | 5 to 10 mph NNE | 6% |
| Thursday Night | 54°F | Mostly Cloudy | 5 mph NNE | 5% |
| Friday | 68°F | Mostly Sunny | 5 to 10 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Zion (42.460, -87.851). Updated through the day.
Growing snapshot for Zion
Last spring frost
Apr 30
First fall frost
Oct 21
Growing season
173 days
Hardiness zone
6a
More local growing data for Zion: nearby ZIP 60099 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Antioch
Bannockburn
Beach Park
Buffalo Grove
Burtons Bridge
Deer Park
Deerfield
Forest Lake
Fox Lake
Fox Lake Hills
Gages Lake
Grandwood Park
Grayslake
Green Oaks
Gurnee
Hainesville
Hawthorn Woods
Highland Park
Highwood
Holiday Hills
Indian Creek
Island Lake
Kildeer
Knollwood
Lake Bluff
Lake Forest
Lake Villa
Lake Zurich
Libertyville
Lincolnshire
Climate data from the nearest NOAA station, Chicago Waukegan Rgnl Ap, Il (3 mi from Zion). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.