Oak Lawn, IL Weather & Growing Conditions
Tonight
66°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 66, with temperatures rising to around 69 overnight. Southeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 66°F | Showers And Thunderstorms | 5 mph SE | 100% |
| Sunday | 68°F | Showers And Thunderstorms | 5 to 15 mph NNE | 84% |
| Sunday Night | 58°F | Chance Rain Showers | 15 mph ENE | 34% |
| Monday | 65°F | Chance Rain Showers | 15 mph ENE | 39% |
| Monday Night | 55°F | Chance Rain Showers | 10 to 15 mph ENE | 28% |
| Tuesday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 28% |
| Tuesday Night | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 23% |
| Wednesday | 64°F | Mostly Cloudy | 10 mph NE | 14% |
| Wednesday Night | 56°F | Mostly Cloudy | 5 to 10 mph NE | 7% |
| Thursday | 66°F | Partly Sunny | 5 to 10 mph NE | 2% |
| Thursday Night | 57°F | Mostly Cloudy | 0 to 5 mph NE | 9% |
| Friday | 71°F | Partly Sunny | 0 to 10 mph NE | 9% |
| Friday Night | 58°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Saturday | 73°F | Mostly Sunny | 0 to 5 mph ENE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Oak Lawn, IL
Last spring frost
Apr 10
First fall frost
Nov 1
Growing season
203 days
Hardiness zone
6a
Explore more for Oak Lawn, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Chicago Midway Ap 3Sw, Il (2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.