National Weather Service Forecast for: Oak Lawn IL
Issued by: National Weather Service Chicago, IL
Updated: 4:11 pm CDT Mar 19, 2026
 
Tonight

Tonight: Partly cloudy, with a low around 43. East wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Partly Cloudy
 Friday

Friday: Partly sunny, with a high near 62. Southwest wind around 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Partly Sunny
 Friday
Night
Friday Night: Mostly cloudy, with a low around 40. Northeast wind around 5 mph, with gusts as high as 10 mph.
Mostly Cloudy
 Saturday

Saturday: Mostly sunny, with a high near 64. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.
Mostly Sunny
 Saturday
Night
Saturday Night: Partly cloudy, with a low around 50. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Partly Cloudy
 Sunday

Sunday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 63.
Slight Chance
Showers
 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 34.
Mostly Cloudy
 Monday

Monday: Mostly sunny, with a high near 44.
Mostly Sunny
 Monday
Night
Monday Night: Mostly cloudy, with a low around 33.
Mostly Cloudy
Lo 43 °F Hi 62 °F Lo 40 °F Hi 64 °F Lo 50 °F Hi 63 °F Lo 34 °F Hi 44 °F Lo 33 °F

 

Tonight
 
 Partly cloudy, with a low around 43. East wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Friday
 
 Partly sunny, with a high near 62. Southwest wind around 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Friday Night
 
 Mostly cloudy, with a low around 40. Northeast wind around 5 mph, with gusts as high as 10 mph.
Saturday
 
 Mostly sunny, with a high near 64. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 15 mph.
Saturday Night
 
 Partly cloudy, with a low around 50. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday
 
 A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 63.
Sunday Night
 
 Mostly cloudy, with a low around 34.
Monday
 
 Mostly sunny, with a high near 44.
Monday Night
 
 Mostly cloudy, with a low around 33.
Tuesday
 
 Mostly cloudy, with a high near 53.
Tuesday Night
 
 Mostly cloudy, with a low around 38.
Wednesday
 
 Partly sunny, with a high near 53.
Wednesday Night
 
 Mostly cloudy, with a low around 44.
Thursday
 
 A chance of showers. Partly sunny, with a high near 62.

 

Forecast from NOAA-NWS for Oak Lawn IL.