NWS Forecast for Buffalo Grove IL

National Weather Service Forecast for: Buffalo Grove IL
Issued by: National Weather Service Chicago, IL

Updated: 3:01 am CDT Jun 22, 2026

Overnight Chance Showers	Monday Decreasing Clouds	Monday Night Mostly Clear	Tuesday Mostly Sunny	Tuesday Night Mostly Cloudy	Wednesday Slight Chance Showers then Showers Likely	Wednesday Night Chance T-storms then Chance Showers	Thursday Mostly Sunny	Thursday Night Partly Cloudy
Lo 57 °F	Hi 71 °F	Lo 52 °F	Hi 73 °F	Lo 57 °F	Hi 78 °F	Lo 60 °F	Hi 77 °F	Lo 57 °F

Beach Hazards Statement
Hazardous Weather Outlook

Overnight	A 30 percent chance of showers. Cloudy, with a low around 57. Northeast wind around 10 mph, with gusts as high as 20 mph.
Monday	Mostly cloudy, then gradually becoming sunny, with a high near 71. North northeast wind around 10 mph, with gusts as high as 20 mph.
Monday Night	Mostly clear, with a low around 52. North wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday	Mostly sunny, with a high near 73. North wind around 5 mph becoming east in the afternoon.
Tuesday Night	Mostly cloudy, with a low around 57. East wind around 5 mph becoming south after midnight.
Wednesday	A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 78. Chance of precipitation is 60%.
Wednesday Night	A 50 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 60.
Thursday	Mostly sunny, with a high near 77.
Thursday Night	Partly cloudy, with a low around 57.
Friday	Mostly sunny, with a high near 77.
Friday Night	Mostly cloudy, with a low around 59.
Saturday	Partly sunny, with a high near 79.
Saturday Night	A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Sunday	Mostly sunny, with a high near 87.

Forecast from NOAA-NWS for Buffalo Grove IL.