Current Conditions

Northbrook, Illinois

78°F26°C

Partly Cloudy

Wind

SSE 11 mph17 km/h

Humidity

62%

Cloud Cover

81%

As of Tuesday, September 8, 2026 at 5:16 PM CDT

Today's Outlook

Day

Overcast and warm, with a high of 78°F26°C. Breezy from the SSE at 8 to 11 mph14 to 17 km/h.

Night

Mostly cloudy, with a low around 76°F25°C. Breezy from the S at 10 mph16 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 78°F26°C	Low 75°F24°C	Precip 0 in0 mm—	Cloud 77%	Wind S 9 mph15 km/h	Tuesday: Overcast and warm, with a high of 78°F26°C. Breezy from the SSE at 8 to 11 mph14 to 17 km/h. Tuesday Night: Mostly cloudy, with a low around 76°F25°C. Breezy from the S at 10 mph16 km/h.
Rain	High 78°F25°C	Low 72°F22°C	Precip 0.5 in12.6 mm99%	Cloud 86%	Wind WSW 9 mph15 km/h	Wednesday: Overcast and warm, with a high of 78°F25°C and morning low of 72°F22°C. Breezy from the WSW at 10 to 11 mph16 to 17 km/h. 99% chance of rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 74°F23°C. Breezy from the SW at 9 to 11 mph14 to 17 km/h. 54% chance of light rain before dawn.
Partly Cloudy	High 74°F23°C	Low 68°F20°C	Precip 0.01 in0.2 mm4%	Cloud 64%	Wind NNE 8 mph12 km/h	Thursday: Overcast and warm, with a high of 74°F23°C. Breezy from the NNE at 8 mph13 km/h. Thursday Night: Partly cloudy, with a low around 68°F20°C. Breezy from the N at 8 mph12 km/h.
Clear	High 77°F25°C	Low 65°F18°C	Precip 0 in0 mm—	Cloud 15%	Wind SE 7 mph11 km/h	Friday: Mostly clear and warm, with a high of 77°F25°C and morning low of 65°F18°C. Breezy from the SE at 7 to 8 mph11 to 13 km/h. Friday Night: Mostly clear, with a low around 66°F19°C. Breezy from the SE at 7 to 10 mph11 to 16 km/h.
Drizzle	High 81°F27°C	Low 68°F20°C	Precip 0.03 in0.8 mm18%	Cloud 44%	Wind SW 9 mph14 km/h	Saturday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 68°F20°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. 15% chance of drizzle in the afternoon. Humid. Saturday Night: Partly cloudy, with a low around 69°F20°C. Breezy from the SW at 8 to 10 mph14 to 16 km/h. 18% chance of drizzle in the evening.
Drizzle	High 72°F22°C	Low 66°F19°C	Precip 0.05 in1.3 mm12%	Cloud 38%	Wind N 9 mph15 km/h	Sunday: Partly cloudy and warm, with a high of 72°F22°C and morning low of 66°F19°C. Breezy from the N at 9 to 10 mph15 to 17 km/h. 12% chance of drizzle in the morning. Sunday Night: Partly cloudy, with a low around 67°F19°C. Breezy from the N at 9 to 10 mph14 to 17 km/h. 11% chance of drizzle throughout the night.
Showers	High 75°F24°C	Low 64°F18°C	Precip 0.14 in3.5 mm27%	Cloud 59%	Wind SE 11 mph18 km/h	Monday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 64°F18°C. Breezy from the SE at 11 to 13 mph18 to 20 km/h. 27% chance of showers throughout the day. Monday Night: Mostly cloudy, with a low around 65°F18°C. Windy from the SE at 12 to 16 mph19 to 26 km/h. 18% chance of showers throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 8	78°F26°C	75°F24°C	0 in0 mm· —	77%	Partly Cloudy	S 9 mph15 km/h
DayOvercast and warm, with a high of 78°F26°C. Breezy from the SSE at 8 to 11 mph14 to 17 km/h. NightMostly cloudy, with a low around 76°F25°C. Breezy from the S at 10 mph16 km/h.
	WednesdaySep 9	78°F25°C	72°F22°C	0.5 in12.6 mm· 99%	86%	Rain	WSW 9 mph15 km/h
DayOvercast and warm, with a high of 78°F25°C and morning low of 72°F22°C. Breezy from the WSW at 10 to 11 mph16 to 17 km/h. 99% chance of rain throughout the day. Humid. NightMostly cloudy, with a low around 74°F23°C. Breezy from the SW at 9 to 11 mph14 to 17 km/h. 54% chance of light rain before dawn.
	ThursdaySep 10	74°F23°C	68°F20°C	0.01 in0.2 mm· 4%	64%	Partly Cloudy	NNE 8 mph12 km/h
DayOvercast and warm, with a high of 74°F23°C. Breezy from the NNE at 8 mph13 km/h. NightPartly cloudy, with a low around 68°F20°C. Breezy from the N at 8 mph12 km/h.
	FridaySep 11	77°F25°C	65°F18°C	0 in0 mm· —	15%	Clear	SE 7 mph11 km/h
DayMostly clear and warm, with a high of 77°F25°C and morning low of 65°F18°C. Breezy from the SE at 7 to 8 mph11 to 13 km/h. NightMostly clear, with a low around 66°F19°C. Breezy from the SE at 7 to 10 mph11 to 16 km/h.
	SaturdaySep 12	81°F27°C	68°F20°C	0.03 in0.8 mm· 18%	44%	Drizzle	SW 9 mph14 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 68°F20°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. 15% chance of drizzle in the afternoon. Humid. NightPartly cloudy, with a low around 69°F20°C. Breezy from the SW at 8 to 10 mph14 to 16 km/h. 18% chance of drizzle in the evening.
	SundaySep 13	72°F22°C	66°F19°C	0.05 in1.3 mm· 12%	38%	Drizzle	N 9 mph15 km/h
DayPartly cloudy and warm, with a high of 72°F22°C and morning low of 66°F19°C. Breezy from the N at 9 to 10 mph15 to 17 km/h. 12% chance of drizzle in the morning. NightPartly cloudy, with a low around 67°F19°C. Breezy from the N at 9 to 10 mph14 to 17 km/h. 11% chance of drizzle throughout the night.
	MondaySep 14	75°F24°C	64°F18°C	0.14 in3.5 mm· 27%	59%	Showers	SE 11 mph18 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 64°F18°C. Breezy from the SE at 11 to 13 mph18 to 20 km/h. 27% chance of showers throughout the day. NightMostly cloudy, with a low around 65°F18°C. Windy from the SE at 12 to 16 mph19 to 26 km/h. 18% chance of showers throughout the night.
	TuesdaySep 15	77°F25°C	70°F21°C	0.11 in2.9 mm· 23%	74%	Light Rain	SW 13 mph20 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 70°F21°C. Breezy from the SW at 13 to 14 mph20 to 22 km/h. 19% chance of drizzle throughout the day. NightMostly cloudy, with a low around 71°F22°C. Windy from the SSW at 13 to 17 mph21 to 27 km/h. 23% chance of light rain throughout the night.
	WednesdaySep 16	73°F23°C	66°F19°C	0.15 in3.9 mm· 27%	65%	Showers	ENE 9 mph14 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 66°F19°C. Breezy from the ENE at 9 mph14 km/h. 22% chance of showers throughout the day. NightMostly cloudy, with a low around 67°F20°C. Breezy from the ENE at 9 mph15 km/h. 27% chance of showers throughout the night.
	ThursdaySep 17	78°F25°C	69°F21°C	0.31 in8 mm· 36%	58%	Showers	S 11 mph18 km/h
DayMostly cloudy and warm, with a high of 78°F25°C and morning low of 69°F21°C. Breezy from the S at 11 to 12 mph18 to 19 km/h. 36% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 69°F21°C. Breezy from the SSE at 11 to 12 mph18 to 20 km/h. 30% chance of showers throughout the night.
	FridaySep 18	74°F23°C	67°F20°C	0.2 in5.1 mm· 22%	50%	Showers	W 11 mph18 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 67°F20°C. Breezy from the W at 12 mph19 km/h. 21% chance of showers throughout the day. NightMostly cloudy, with a low around 68°F20°C. Breezy from the W at 11 to 12 mph18 to 20 km/h. 22% chance of showers throughout the night.
	SaturdaySep 19	71°F22°C	64°F18°C	0.24 in6 mm· 26%	57%	Showers	NNW 11 mph17 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 64°F18°C. Breezy from the NW at 11 mph18 km/h. 22% chance of showers throughout the day. NightMostly cloudy, with a low around 65°F18°C. Breezy from the NNW at 11 mph17 km/h. 26% chance of showers throughout the night.
	SundaySep 20	67°F19°C	61°F16°C	0.18 in4.6 mm· 28%	60%	Showers	N 11 mph18 km/h
DayMostly cloudy and mild, with a high of 67°F19°C and morning low of 61°F16°C. Breezy from the N at 12 mph19 km/h. 24% chance of showers throughout the day. NightMostly cloudy, with a low around 62°F17°C. Breezy from the NNW at 11 mph18 km/h. 28% chance of showers throughout the night.
	MondaySep 21	66°F19°C	58°F14°C	0.09 in2.3 mm· 18%	53%	Drizzle	N 11 mph17 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 58°F14°C. Breezy from the N at 11 mph18 km/h. 18% chance of drizzle throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the N at 11 mph17 km/h. 17% chance of drizzle throughout the night.
	TuesdaySep 22	67°F19°C	57°F14°C	0.09 in2.3 mm· 15%	51%	Drizzle	ESE 10 mph16 km/h
DayMostly cloudy and mild, with a high of 67°F19°C and morning low of 57°F14°C. Breezy from the ESE at 10 mph16 km/h. 15% chance of drizzle throughout the day. NightMostly cloudy, with a low around 58°F15°C. Breezy from the ESE at 10 mph16 km/h. 12% chance of drizzle throughout the night.

Nearby Cities

Deerfield3 mi5 km Highland Park4 mi6 km Glenview5 mi7 km Wheeling5 mi8 km Prospect Heights6 mi10 km Morton Grove6 mi10 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 42.1275°N, 87.8290°W·Elevation: 197m·Timezone: America/Chicago·Population: 33,663