National Weather Service Forecast for: Romeoville IL
Issued by: National Weather Service Chicago, IL
Updated: 9:36 am CDT Oct 6, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 74. South southwest wind around 15 mph, with gusts as high as 25 mph.
Sunny
 Tonight

Tonight: Partly cloudy, with a low around 55. South southwest wind around 10 mph, with gusts as high as 20 mph.
Partly Cloudy
 Wednesday

Wednesday: Mostly sunny, with a high near 76. Southwest wind 5 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 15 mph.
Mostly Sunny
 Wednesday
Night
Wednesday Night: Mostly clear during the early evening, then becoming mostly cloudy, with a low around 51. West northwest wind around 5 mph, with gusts as high as 10 mph.
Mostly Cloudy
 Thursday

Thursday: Mostly sunny, with a high near 69. Northwest wind 5 to 10 mph.
Mostly Sunny
 Thursday
Night
Thursday Night: Mostly clear, with a low around 46.
Mostly Clear
 Friday

Friday: Sunny, with a high near 71.
Sunny
 Friday
Night
Friday Night: Mostly clear, with a low around 52.
Mostly Clear
 Saturday

Saturday: Sunny, with a high near 79.
Sunny
Hi 74 °F Lo 55 °F Hi 76 °F Lo 51 °F Hi 69 °F Lo 46 °F Hi 71 °F Lo 52 °F Hi 79 °F

 

This Afternoon
 
 Sunny, with a high near 74. South southwest wind around 15 mph, with gusts as high as 25 mph.
Tonight
 
 Partly cloudy, with a low around 55. South southwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
 
 Mostly sunny, with a high near 76. Southwest wind 5 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 15 mph.
Wednesday Night
 
 Mostly clear during the early evening, then becoming mostly cloudy, with a low around 51. West northwest wind around 5 mph, with gusts as high as 10 mph.
Thursday
 
 Mostly sunny, with a high near 69. Northwest wind 5 to 10 mph.
Thursday Night
 
 Mostly clear, with a low around 46.
Friday
 
 Sunny, with a high near 71.
Friday Night
 
 Mostly clear, with a low around 52.
Saturday
 
 Sunny, with a high near 79.
Saturday Night
 
 Partly cloudy, with a low around 58.
Sunday
 
 Mostly sunny, with a high near 80.
Sunday Night
 
 Mostly clear, with a low around 58.
Columbus Day
 
 Mostly sunny, with a high near 75.

 

Forecast from NOAA-NWS for Romeoville IL.