Island Lake, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Island Lake, a village in Lake County, Illinois.
This Afternoon
71°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy. High near 71, with temperatures falling to around 69 in the afternoon. East wind 10 to 15 mph. Chance of precipitation is 40%.
7-day forecast for Island Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Chance Rain Showers | 10 to 15 mph E | 35% |
| Tonight | 60°F | Slight Chance Rain Showers then Showers And Thunderstorms Likely | 10 to 15 mph E | 68% |
| Saturday | 75°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 to 15 mph ESE | 95% |
| Saturday Night | 62°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 to 10 mph NE | 79% |
| Sunday | 67°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 73% |
| Sunday Night | 53°F | Chance Rain Showers | 15 mph ENE | 46% |
| Monday | 63°F | Chance Rain Showers | 15 mph ENE | 40% |
| Monday Night | 49°F | Chance Rain Showers | 5 to 15 mph ENE | 40% |
| Tuesday | 62°F | Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Tuesday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 15% |
| Wednesday | 64°F | Partly Sunny | 5 to 10 mph NE | 10% |
| Wednesday Night | 50°F | Mostly Cloudy | 0 to 5 mph NNE | 4% |
| Thursday | 67°F | Partly Sunny | 0 to 5 mph NNE | 5% |
| Thursday Night | 51°F | Mostly Cloudy | 0 to 5 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Island Lake (42.279, -88.200). Updated through the day.
Growing snapshot for Island Lake
Last spring frost
May 1
First fall frost
Oct 11
Growing season
162 days
Hardiness zone
5b
More local growing data for Island Lake: nearby ZIP 60042 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Antioch
Bannockburn
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Buffalo Grove
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Deerfield
Forest Lake
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Fox Lake Hills
Gages Lake
Grandwood Park
Grayslake
Green Oaks
Gurnee
Hainesville
Hawthorn Woods
Highland Park
Highwood
Holiday Hills
Indian Creek
Kildeer
Knollwood
Lake Bluff
Lake Forest
Lake Villa
Lake Zurich
Libertyville
Lincolnshire
Lindenhurst
Climate data from the nearest NOAA station, Mc Henry -Wg Stratton L&D, Il (3.6 mi from Island Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.