Illinois · NWS LOT office

Buffalo Grove, IL weather

It is 54°F and clear at Chicago / Wheeling, Pal-Waukee Airport as of Oct 28, 1:15 AM CDT. Overnight: Partly Cloudy, low near 51°F, 1% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 1:20 AM CDT.

Updated Oct 28, 1:24 AM CDT (snapshot)

Current conditions

Temperature

54°F

Clear

Wind

Calm

Humidity 94% · dew point 52°F

Pressure · visibility

30.20 inHg

Visibility 10 mi

Observed at Chicago / Wheeling, Pal-Waukee Airport (KPWK), Oct 28, 1:15 AM CDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Buffalo Grove forecast zone right now.

Around the NWS LOT forecast area

No active alerts in zones served by the LOT office near Buffalo Grove.

From the alert snapshot of Oct 28, 2026, 2:15 AM EDT. No alerts are active anywhere in Illinois.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Buffalo Grove (local time)
TimeTempForecastPrecip. chanceWind
Wed 1 AM51°FMostly Cloudy1%S 5 mph
Wed 2 AM51°FMostly Cloudy1%S 5 mph
Wed 3 AM52°FPartly Cloudy1%S 5 mph
Wed 4 AM53°FPartly Cloudy1%S 5 mph
Wed 5 AM53°FMostly Clear1%SSW 5 mph
Wed 6 AM53°FSunny1%SSW 5 mph
Wed 7 AM52°FSunny0%SSW 5 mph
Wed 8 AM53°FSunny0%SSW 5 mph
Wed 9 AM57°FSunny0%SSW 5 mph
Wed 10 AM62°FSunny0%SSW 5 mph
Wed 11 AM65°FSunny0%SSW 10 mph
Wed 12 PM68°FSunny0%SSW 10 mph
Wed 1 PM71°FSunny0%SSW 10 mph
Wed 2 PM72°FSunny0%S 10 mph
Wed 3 PM73°FSunny0%S 15 mph
Wed 4 PM72°FSunny0%S 10 mph
Wed 5 PM71°FSunny1%S 10 mph
Wed 6 PM68°FPartly Cloudy1%S 10 mph
Wed 7 PM66°FMostly Clear3%S 10 mph
Wed 8 PM64°FMostly Clear3%S 10 mph
Wed 9 PM63°FMostly Clear2%S 10 mph
Wed 10 PM63°FMostly Clear2%S 10 mph
Wed 11 PM62°FMostly Clear3%S 10 mph
Thu 12 AM62°FMostly Clear4%SSW 15 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Buffalo Grove can differ.

7-day forecast

Overnight

Low 51°F

Partly cloudy. Low around 51, with temperatures rising to around 53 overnight. South southwest wind around 5 mph.

Wednesday

High 73°F·Low 59°F

Sunny. High near 73, with temperatures falling to around 71 in the afternoon. South southwest wind 5 to 15 mph.

Wednesday Night: A slight chance of rain showers after 4am. Partly cloudy, with a low around 59. South southwest wind 10 to 15 mph. Chance of precipitation is 20%.

Thursday

High 70°F·Low 44°F

A chance of rain showers before 9am. Mostly sunny, with a high near 70. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Thursday Night: Mostly clear, with a low around 44. North wind 0 to 5 mph.

Friday

High 63°F·Low 49°F

Partly sunny, with a high near 63.

Friday Night: A chance of rain showers after 7pm. Cloudy, with a low around 49.

Saturday

High 61°F·Low 50°F

A chance of rain showers. Cloudy, with a high near 61.

Saturday Night: A chance of rain showers. Cloudy, with a low around 50.

Sunday

High 66°F·Low 51°F

A chance of rain showers. Mostly cloudy, with a high near 66.

Sunday Night: A chance of rain showers. Mostly cloudy, with a low around 51.

Monday

High 66°F·Low 52°F

A chance of rain showers. Mostly cloudy, with a high near 66.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 52.

Tuesday

High 66°F

Rain showers likely. Mostly cloudy, with a high near 66.

Nearby cities

Larger cities in the area

Other cities in Lake County

See every city we cover in Illinois, or check all active alerts.

About this forecast

Forecast office
Buffalo Grove is served by the National Weather Service LOT forecast office, forecast zone ILZ006, county zone ILC097.
Location used
The Census Bureau's internal point for Buffalo Grove (42.1660, -87.9618), in Lake County. Population: 43,072 (2024 estimate), number 35 of the 121 Illinois cities on this site.
Radar
Nearest NWS radar: KLOT. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/42.166,-87.9618 (forecast issued Oct 28, 1:20 AM CDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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