National Weather Service Forecast for: Oak Lawn IL
Issued by: National Weather Service Chicago, IL
Updated: 3:01 am CDT Jun 22, 2026
 
Overnight

Overnight: A 40 percent chance of showers, mainly before 5am. Cloudy, with a low around 59. Northeast wind around 15 mph, with gusts as high as 25 mph.
Chance
Showers
 Monday

Monday: A 10 percent chance of showers before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 70. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Slight Chance
Showers then
Mostly Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 55. North wind 5 to 10 mph, with gusts as high as 15 mph.
Mostly Clear

 Tuesday

Tuesday: Sunny, with a high near 73. Northeast wind around 5 mph, with gusts as high as 10 mph.
Sunny

 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 58. East wind around 5 mph becoming south after midnight.
Mostly Cloudy

 Wednesday

Wednesday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78.
Mostly Sunny
then Chance
T-storms
 Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 62. Chance of precipitation is 50%.
Chance
T-storms
 Thursday

Thursday: Mostly sunny, with a high near 78.
Mostly Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 60.
Partly Cloudy
Lo 59 °F Hi 70 °F Lo 55 °F Hi 73 °F Lo 58 °F Hi 78 °F Lo 62 °F Hi 78 °F Lo 60 °F

Beach Hazards Statement
Hazardous Weather Outlook
 

Overnight
 
 A 40 percent chance of showers, mainly before 5am. Cloudy, with a low around 59. Northeast wind around 15 mph, with gusts as high as 25 mph.
Monday
 
 A 10 percent chance of showers before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 70. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
 
 Mostly clear, with a low around 55. North wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
 
 Sunny, with a high near 73. Northeast wind around 5 mph, with gusts as high as 10 mph.
Tuesday Night
 
 Mostly cloudy, with a low around 58. East wind around 5 mph becoming south after midnight.
Wednesday
 
 A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78.
Wednesday Night
 
 A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 62. Chance of precipitation is 50%.
Thursday
 
 Mostly sunny, with a high near 78.
Thursday Night
 
 Partly cloudy, with a low around 60.
Friday
 
 Mostly sunny, with a high near 78.
Friday Night
 
 Mostly cloudy, with a low around 62.
Saturday
 
 Partly sunny, with a high near 80.
Saturday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Sunday
 
 Mostly sunny, with a high near 88.

 

Forecast from NOAA-NWS for Oak Lawn IL.