Oak Lawn, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oak Lawn, a village in Cook County, Illinois.
Overnight
65°F
Mostly Clear
Mostly clear, with a low around 65. South wind around 5 mph.
7-day forecast for Oak Lawn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 85°F | Mostly Sunny | 5 to 10 mph S | 3% |
| Tuesday Night | 69°F | Mostly Cloudy | 5 mph SSW | 13% |
| Wednesday | 82°F | Slight Chance Showers And Thunderstorms | 5 mph SW | 57% |
| Wednesday Night | 67°F | Showers And Thunderstorms | 5 mph WSW | 89% |
| Thursday | 78°F | Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph SE | 81% |
| Thursday Night | 64°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 35% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph SSW | 5% |
| Friday Night | 66°F | Mostly Clear | 0 to 5 mph S | 8% |
| Saturday | 84°F | Mostly Sunny | 5 mph SSW | 9% |
| Saturday Night | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 17% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 15 mph SW | 17% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 42% |
| Monday | 86°F | Chance Rain Showers | 5 to 10 mph SW | 42% |
Forecast source: National Weather Service (api.weather.gov) for Oak Lawn (41.714, -87.753). Updated through the day.
Growing snapshot for Oak Lawn
Last spring frost
Apr 10
First fall frost
Nov 1
Growing season
203 days
Hardiness zone
6a
More local growing data for Oak Lawn: nearby ZIP 60453 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Chicago Midway Ap 3Sw, Il (2 mi from Oak Lawn). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.