National Weather Service Forecast for: Buffalo Grove IL
Issued by: National Weather Service Chicago, IL
Updated: 10:11 am CDT May 26, 2026
 
Today

Today: Mostly sunny, with a high near 86. West southwest wind 5 to 10 mph becoming southeast in the afternoon.
Mostly Sunny
 Tonight

Tonight: Partly cloudy, with a low around 62. Southeast wind around 5 mph becoming west northwest after midnight.
Partly Cloudy
 Wednesday

Wednesday: Mostly sunny, with a high near 82. Light north wind becoming northeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Mostly Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 55. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly Clear
 Thursday

Thursday: Sunny, with a high near 70. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Sunny
 Thursday
Night
Thursday Night: Mostly clear, with a low around 52.
Mostly Clear
 Friday

Friday: Sunny, with a high near 78.
Sunny
 Friday
Night
Friday Night: Partly cloudy, with a low around 56.
Partly Cloudy
 Saturday

Saturday: Sunny, with a high near 75.
Sunny
Hi 86 °F Lo 62 °F Hi 82 °F Lo 55 °F Hi 70 °F Lo 52 °F Hi 78 °F Lo 56 °F Hi 75 °F

 

Today
 
 Mostly sunny, with a high near 86. West southwest wind 5 to 10 mph becoming southeast in the afternoon.
Tonight
 
 Partly cloudy, with a low around 62. Southeast wind around 5 mph becoming west northwest after midnight.
Wednesday
 
 Mostly sunny, with a high near 82. Light north wind becoming northeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Wednesday Night
 
 Mostly clear, with a low around 55. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
 
 Sunny, with a high near 70. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
 
 Mostly clear, with a low around 52.
Friday
 
 Sunny, with a high near 78.
Friday Night
 
 Partly cloudy, with a low around 56.
Saturday
 
 Sunny, with a high near 75.
Saturday Night
 
 Mostly clear, with a low around 55.
Sunday
 
 Sunny, with a high near 75.
Sunday Night
 
 Mostly clear, with a low around 56.
Monday
 
 Sunny, with a high near 77.

 

Forecast from NOAA-NWS for Buffalo Grove IL.