Current Conditions

Lake Forest, Illinois

75°F24°C

Rain

Wind

SW 10 mph16 km/h

Humidity

71%

Cloud Cover

99%

As of Wednesday, September 9, 2026 at 12:09 AM CDT

Today's Outlook

Day

Overcast and warm, with a high of 77°F25°C and morning low of 72°F22°C. Breezy from the WSW at 11 to 12 mph17 to 19 km/h. 100% chance of rain throughout the day. Humid.

Night

Mostly cloudy, with a low around 73°F23°C. Breezy from the SW at 10 to 11 mph16 to 17 km/h. 76% chance of light rain before dawn.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 77°F25°C	Low 72°F22°C	Precip 0.59 in14.9 mm100%	Cloud 86%	Wind WSW 10 mph16 km/h	Wednesday: Overcast and warm, with a high of 77°F25°C and morning low of 72°F22°C. Breezy from the WSW at 11 to 12 mph17 to 19 km/h. 100% chance of rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 73°F23°C. Breezy from the SW at 10 to 11 mph16 to 17 km/h. 76% chance of light rain before dawn.
Partly Cloudy	High 72°F22°C	Low 69°F20°C	Precip 0 in0 mm—	Cloud 64%	Wind NNE 8 mph14 km/h	Thursday: Mostly cloudy and warm, with a high of 72°F22°C. Breezy from the NNE at 8 to 9 mph14 to 15 km/h. Thursday Night: Partly cloudy, with a low around 69°F20°C. Breezy from the NNW at 8 to 10 mph13 to 16 km/h.
Clear	High 75°F24°C	Low 66°F19°C	Precip 0 in0 mm—	Cloud 12%	Wind SE 8 mph12 km/h	Friday: Mostly clear and warm, with a high of 75°F24°C and morning low of 66°F19°C. Breezy from the SE at 8 to 9 mph12 to 14 km/h. Friday Night: Mostly clear, with a low around 67°F20°C. Breezy from the SE at 8 to 11 mph12 to 17 km/h.
Drizzle	High 78°F26°C	Low 68°F20°C	Precip 0.02 in0.6 mm13%	Cloud 46%	Wind SW 9 mph15 km/h	Saturday: Mostly cloudy and warm, with a high of 78°F26°C and morning low of 68°F20°C. Breezy from the SW at 9 to 11 mph15 to 17 km/h. 13% chance of drizzle in the afternoon. Humid. Saturday Night: Partly cloudy, with a low around 69°F21°C. Breezy from the SW at 9 to 11 mph15 to 18 km/h. 12% chance of drizzle in the evening.
Drizzle	High 71°F22°C	Low 67°F19°C	Precip 0.03 in0.8 mm13%	Cloud 34%	Wind N 10 mph16 km/h	Sunday: Partly cloudy and warm, with a high of 71°F22°C and morning low of 67°F19°C. Breezy from the N at 11 to 12 mph17 to 19 km/h. 13% chance of drizzle in the morning. Sunday Night: Partly cloudy, with a low around 67°F20°C. Breezy from the N at 10 to 12 mph16 to 19 km/h.
Showers	High 73°F23°C	Low 65°F18°C	Precip 0.17 in4.4 mm27%	Cloud 57%	Wind SE 13 mph21 km/h	Monday: Mostly cloudy and warm, with a high of 72°F22°C and morning low of 65°F18°C. Breezy from the SE at 13 to 15 mph21 to 25 km/h. 27% chance of showers throughout the day. Monday Night: Partly cloudy, with a low around 66°F19°C. Windy from the SSE at 13 to 19 mph22 to 30 km/h. 13% chance of showers throughout the night.
Light Rain	High 78°F26°C	Low 71°F22°C	Precip 0.14 in3.5 mm32%	Cloud 73%	Wind SW 13 mph21 km/h	Tuesday: Mostly cloudy and warm, with a high of 78°F26°C and morning low of 71°F22°C. Breezy from the SW at 13 to 15 mph20 to 24 km/h. 18% chance of drizzle throughout the day. Tuesday Night: Mostly cloudy, with a low around 72°F22°C. Windy from the SSW at 14 to 19 mph22 to 30 km/h. 32% chance of light rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	77°F25°C	72°F22°C	0.59 in14.9 mm· 100%	86%	Rain	WSW 10 mph16 km/h
DayOvercast and warm, with a high of 77°F25°C and morning low of 72°F22°C. Breezy from the WSW at 11 to 12 mph17 to 19 km/h. 100% chance of rain throughout the day. Humid. NightMostly cloudy, with a low around 73°F23°C. Breezy from the SW at 10 to 11 mph16 to 17 km/h. 76% chance of light rain before dawn.
	ThursdaySep 10	72°F22°C	69°F20°C	0 in0 mm· —	64%	Partly Cloudy	NNE 8 mph14 km/h
DayMostly cloudy and warm, with a high of 72°F22°C. Breezy from the NNE at 8 to 9 mph14 to 15 km/h. NightPartly cloudy, with a low around 69°F20°C. Breezy from the NNW at 8 to 10 mph13 to 16 km/h.
	FridaySep 11	75°F24°C	66°F19°C	0 in0 mm· —	12%	Clear	SE 8 mph12 km/h
DayMostly clear and warm, with a high of 75°F24°C and morning low of 66°F19°C. Breezy from the SE at 8 to 9 mph12 to 14 km/h. NightMostly clear, with a low around 67°F20°C. Breezy from the SE at 8 to 11 mph12 to 17 km/h.
	SaturdaySep 12	78°F26°C	68°F20°C	0.02 in0.6 mm· 13%	46%	Drizzle	SW 9 mph15 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 68°F20°C. Breezy from the SW at 9 to 11 mph15 to 17 km/h. 13% chance of drizzle in the afternoon. Humid. NightPartly cloudy, with a low around 69°F21°C. Breezy from the SW at 9 to 11 mph15 to 18 km/h. 12% chance of drizzle in the evening.
	SundaySep 13	71°F22°C	67°F19°C	0.03 in0.8 mm· 13%	34%	Drizzle	N 10 mph16 km/h
DayPartly cloudy and warm, with a high of 71°F22°C and morning low of 67°F19°C. Breezy from the N at 11 to 12 mph17 to 19 km/h. 13% chance of drizzle in the morning. NightPartly cloudy, with a low around 67°F20°C. Breezy from the N at 10 to 12 mph16 to 19 km/h.
	MondaySep 14	73°F23°C	65°F18°C	0.17 in4.4 mm· 27%	57%	Showers	SE 13 mph21 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 65°F18°C. Breezy from the SE at 13 to 15 mph21 to 25 km/h. 27% chance of showers throughout the day. NightPartly cloudy, with a low around 66°F19°C. Windy from the SSE at 13 to 19 mph22 to 30 km/h. 13% chance of showers throughout the night.
	TuesdaySep 15	78°F26°C	71°F22°C	0.14 in3.5 mm· 32%	73%	Light Rain	SW 13 mph21 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 71°F22°C. Breezy from the SW at 13 to 15 mph20 to 24 km/h. 18% chance of drizzle throughout the day. NightMostly cloudy, with a low around 72°F22°C. Windy from the SSW at 14 to 19 mph22 to 30 km/h. 32% chance of light rain throughout the night.
	WednesdaySep 16	73°F23°C	68°F20°C	0.31 in7.8 mm· 39%	71%	Light Rain	ENE 9 mph15 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 68°F20°C. Breezy from the ENE at 9 mph14 km/h. 34% chance of light rain throughout the day. NightMostly cloudy, with a low around 69°F21°C. Breezy from the ENE at 9 mph15 km/h. 39% chance of showers throughout the night.
	ThursdaySep 17	78°F25°C	71°F21°C	0.26 in6.6 mm· 29%	56%	Showers	SSW 12 mph19 km/h
DayMostly cloudy and warm, with a high of 78°F25°C and morning low of 71°F21°C. Breezy from the SSW at 12 mph19 km/h. 28% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 71°F22°C. Breezy from the S at 11 to 12 mph18 to 20 km/h. 29% chance of showers throughout the night.
	FridaySep 18	73°F23°C	68°F20°C	0.17 in4.3 mm· 22%	53%	Showers	W 12 mph20 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 68°F20°C. Breezy from the W at 12 mph20 km/h. 21% chance of drizzle throughout the day. NightMostly cloudy, with a low around 68°F20°C. Breezy from the W at 12 to 13 mph20 to 21 km/h. 22% chance of showers throughout the night.
	SaturdaySep 19	69°F20°C	63°F17°C	0.14 in3.6 mm· 22%	52%	Showers	NW 12 mph19 km/h
DayMostly cloudy and warm, with a high of 69°F20°C and morning low of 63°F17°C. Breezy from the NW at 12 mph19 km/h. 20% chance of drizzle throughout the day. NightMostly cloudy, with a low around 64°F18°C. Breezy from the NW at 12 mph19 km/h. 22% chance of showers throughout the night.
	SundaySep 20	66°F19°C	60°F16°C	0.12 in3.1 mm· 22%	53%	Showers	N 12 mph19 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 60°F16°C. Breezy from the N at 11 to 12 mph18 to 19 km/h. 18% chance of showers throughout the day. NightMostly cloudy, with a low around 61°F16°C. Breezy from the N at 12 mph19 km/h. 22% chance of showers throughout the night.
	MondaySep 21	65°F19°C	59°F15°C	0.11 in2.8 mm· 17%	54%	Showers	ENE 11 mph18 km/h
DayMostly cloudy and mild, with a high of 65°F19°C and morning low of 59°F15°C. Breezy from the ENE at 11 mph18 km/h. 16% chance of showers throughout the day. NightMostly cloudy, with a low around 60°F16°C. Breezy from the ENE at 11 to 12 mph18 to 19 km/h. 17% chance of drizzle throughout the night.
	TuesdaySep 22	66°F19°C	59°F15°C	0.13 in3.3 mm· 22%	55%	Showers	ESE 11 mph17 km/h
DayMostly cloudy and mild, with a high of 66°F19°C and morning low of 59°F15°C. Breezy from the ESE at 11 mph17 km/h. 22% chance of showers throughout the day. NightMostly cloudy, with a low around 60°F16°C. Breezy from the ESE at 11 mph17 km/h. 19% chance of showers throughout the night.
	WednesdaySep 23	68°F20°C	60°F16°C	0.09 in2.3 mm· 16%	53%	Drizzle	SSE 10 mph17 km/h
DayMostly cloudy and mild, with a high of 68°F20°C and morning low of 60°F16°C. Breezy from the SSE at 10 to 11 mph17 to 17 km/h. 16% chance of drizzle throughout the day. NightMostly cloudy, with a low around 61°F16°C. Breezy from the SSE at 10 mph17 km/h. 15% chance of drizzle throughout the night.

Nearby Cities

North Chicago5 mi7 km Highland Park6 mi9 km Libertyville6 mi10 km Deerfield6 mi10 km Waukegan7 mi12 km Vernon Hills8 mi12 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.

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Coordinates: 42.2586°N, 87.8406°W·Elevation: 210m·Timezone: America/Chicago·Population: 19,408