National Weather Service Forecast for: Downers Grove IL
Issued by: National Weather Service Chicago, IL
Updated: 3:06 am CDT Jul 12, 2025
 
Overnight

Overnight: A 30 percent chance of showers, mainly before 4am. Cloudy, with a low around 70. South southwest wind around 10 mph.
Chance
Showers
 Saturday

Saturday: A 10 percent chance of showers after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 83. West southwest wind around 10 mph, with gusts as high as 15 mph.
Cloudy then
Slight Chance
Showers
 Saturday
Night
Saturday Night: A 20 percent chance of showers before 8pm. Mostly clear, with a low around 66. West northwest wind 5 to 10 mph.
Slight Chance
Showers then
Mostly Clear
 Sunday

Sunday: Mostly sunny, with a high near 84. West wind 5 to 10 mph.
Mostly Sunny

 Sunday
Night
Sunday Night: Mostly clear, with a low around 65. Southwest wind around 5 mph.
Mostly Clear

 Monday

Monday: Sunny, with a high near 90.
Sunny

 Monday
Night
Monday Night: Partly cloudy, with a low around 72.
Partly Cloudy

 Tuesday

Tuesday: A chance of showers after 1pm. Mostly sunny, with a high near 87.
Mostly Sunny
then Chance
Showers
 Tuesday
Night
Tuesday Night: A chance of showers after 1am. Partly cloudy, with a low around 71.
Partly Cloudy
then Chance
Showers
Lo 70 °F Hi 83 °F Lo 66 °F Hi 84 °F Lo 65 °F Hi 90 °F Lo 72 °F Hi 87 °F Lo 71 °F

Hazardous Weather Outlook
 

Overnight
 
 A 30 percent chance of showers, mainly before 4am. Cloudy, with a low around 70. South southwest wind around 10 mph.
Saturday
 
 A 10 percent chance of showers after 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 83. West southwest wind around 10 mph, with gusts as high as 15 mph.
Saturday Night
 
 A 20 percent chance of showers before 8pm. Mostly clear, with a low around 66. West northwest wind 5 to 10 mph.
Sunday
 
 Mostly sunny, with a high near 84. West wind 5 to 10 mph.
Sunday Night
 
 Mostly clear, with a low around 65. Southwest wind around 5 mph.
Monday
 
 Sunny, with a high near 90.
Monday Night
 
 Partly cloudy, with a low around 72.
Tuesday
 
 A chance of showers after 1pm. Mostly sunny, with a high near 87.
Tuesday Night
 
 A chance of showers after 1am. Partly cloudy, with a low around 71.
Wednesday
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87.
Wednesday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Thursday
 
 A chance of showers and thunderstorms. Partly sunny, with a high near 84.
Thursday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Friday
 
 Mostly sunny, with a high near 81.

 

Forecast from NOAA-NWS for Downers Grove IL.