Current Conditions

Crystal Lake, Illinois

76°F24°C

Rain

Wind

SSW 8 mph13 km/h

Humidity

63%

Cloud Cover

77%

As of Tuesday, September 8, 2026 at 8:33 PM CDT

Today's Outlook

Night

Mostly cloudy, with a low around 71°F22°C. Breezy from the SW at 7 to 8 mph11 to 13 km/h. 74% chance of light rain before dawn.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 79°F26°C	Low 71°F21°C	Precip 0.54 in13.6 mm100%	Cloud 85%	Wind WSW 8 mph12 km/h	Wednesday: Overcast and warm, with a high of 79°F26°C and morning low of 71°F21°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h. 100% chance of rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 71°F22°C. Breezy from the SW at 7 to 8 mph11 to 13 km/h. 74% chance of light rain before dawn.
Partly Cloudy	High 77°F25°C	Low 64°F18°C	Precip 0 in0.1 mm2%	Cloud 62%	Wind NNE 5 mph8 km/h	Thursday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 65°F18°C. Light wind from the NNE around 5 mph8 km/h. Thursday Night: Partly cloudy, with a low around 64°F18°C. Light wind from the NNW around 5 mph9 km/h.
Clear	High 80°F27°C	Low 58°F14°C	Precip 0 in0 mm—	Cloud 12%	Wind SE 5 mph9 km/h	Friday: Mostly clear and warm, with a high of 80°F27°C and morning low of 58°F14°C. Light wind from the SSE around 6 mph9 km/h. Friday Night: Mostly clear, with a low around 59°F15°C. Breezy from the SE at 5 to 7 mph8 to 11 km/h.
Drizzle	High 83°F28°C	Low 64°F18°C	Precip 0.04 in1 mm20%	Cloud 49%	Wind SW 7 mph12 km/h	Saturday: Mostly cloudy and warm, with a high of 83°F28°C and morning low of 64°F18°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 20% chance of drizzle in the afternoon. Humid. Saturday Night: Partly cloudy, with a low around 65°F18°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 20% chance of drizzle in the evening.
Drizzle	High 75°F24°C	Low 61°F16°C	Precip 0.06 in1.4 mm18%	Cloud 34%	Wind N 6 mph10 km/h	Sunday: Partly cloudy and warm, with a high of 75°F24°C and morning low of 61°F16°C. Breezy from the NNW at 7 mph11 km/h. 16% chance of drizzle in the morning. Sunday Night: Partly cloudy, with a low around 63°F17°C. Light wind from the N around 6 mph10 km/h. 18% chance of drizzle throughout the night.
Showers	High 77°F25°C	Low 61°F16°C	Precip 0.17 in4.4 mm25%	Cloud 60%	Wind SE 9 mph15 km/h	Monday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 61°F16°C. Breezy from the SE at 9 to 12 mph15 to 19 km/h. 25% chance of light rain throughout the day. Monday Night: Partly cloudy, with a low around 61°F16°C. Breezy from the SSE at 9 to 13 mph14 to 20 km/h. 16% chance of showers throughout the night.
Light Rain	High 80°F27°C	Low 67°F20°C	Precip 0.16 in4.1 mm30%	Cloud 71%	Wind SW 10 mph16 km/h	Tuesday: Mostly cloudy and warm, with a high of 80°F27°C and morning low of 69°F20°C. Breezy from the WSW at 10 to 11 mph17 to 17 km/h. 25% chance of light rain throughout the day. Tuesday Night: Mostly cloudy, with a low around 67°F20°C. Breezy from the SW at 9 to 13 mph15 to 21 km/h. 30% chance of light rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	79°F26°C	71°F21°C	0.54 in13.6 mm· 100%	85%	Rain	WSW 8 mph12 km/h
DayOvercast and warm, with a high of 79°F26°C and morning low of 71°F21°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h. 100% chance of rain throughout the day. Humid. NightMostly cloudy, with a low around 71°F22°C. Breezy from the SW at 7 to 8 mph11 to 13 km/h. 74% chance of light rain before dawn.
	ThursdaySep 10	77°F25°C	64°F18°C	0 in0.1 mm· 2%	62%	Partly Cloudy	NNE 5 mph8 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 65°F18°C. Light wind from the NNE around 5 mph8 km/h. NightPartly cloudy, with a low around 64°F18°C. Light wind from the NNW around 5 mph9 km/h.
	FridaySep 11	80°F27°C	58°F14°C	0 in0 mm· —	12%	Clear	SE 5 mph9 km/h
DayMostly clear and warm, with a high of 80°F27°C and morning low of 58°F14°C. Light wind from the SSE around 6 mph9 km/h. NightMostly clear, with a low around 59°F15°C. Breezy from the SE at 5 to 7 mph8 to 11 km/h.
	SaturdaySep 12	83°F28°C	64°F18°C	0.04 in1 mm· 20%	49%	Drizzle	SW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 64°F18°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 20% chance of drizzle in the afternoon. Humid. NightPartly cloudy, with a low around 65°F18°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 20% chance of drizzle in the evening.
	SundaySep 13	75°F24°C	61°F16°C	0.06 in1.4 mm· 18%	34%	Drizzle	N 6 mph10 km/h
DayPartly cloudy and warm, with a high of 75°F24°C and morning low of 61°F16°C. Breezy from the NNW at 7 mph11 km/h. 16% chance of drizzle in the morning. NightPartly cloudy, with a low around 63°F17°C. Light wind from the N around 6 mph10 km/h. 18% chance of drizzle throughout the night.
	MondaySep 14	77°F25°C	61°F16°C	0.17 in4.4 mm· 25%	60%	Showers	SE 9 mph15 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 61°F16°C. Breezy from the SE at 9 to 12 mph15 to 19 km/h. 25% chance of light rain throughout the day. NightPartly cloudy, with a low around 61°F16°C. Breezy from the SSE at 9 to 13 mph14 to 20 km/h. 16% chance of showers throughout the night.
	TuesdaySep 15	80°F27°C	67°F20°C	0.16 in4.1 mm· 30%	71%	Light Rain	SW 10 mph16 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 69°F20°C. Breezy from the WSW at 10 to 11 mph17 to 17 km/h. 25% chance of light rain throughout the day. NightMostly cloudy, with a low around 67°F20°C. Breezy from the SW at 9 to 13 mph15 to 21 km/h. 30% chance of light rain throughout the night.
	WednesdaySep 16	74°F23°C	61°F16°C	0.21 in5.3 mm· 25%	61%	Showers	ENE 6 mph10 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 61°F16°C. Light wind from the ENE around 6 mph10 km/h. 25% chance of showers throughout the day. NightMostly cloudy, with a low around 62°F17°C. Light wind from the ENE around 6 mph10 km/h. 24% chance of showers throughout the night.
	ThursdaySep 17	79°F26°C	65°F18°C	0.22 in5.7 mm· 26%	59%	Showers	SSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 65°F18°C. Breezy from the SW at 9 to 10 mph14 to 16 km/h. 26% chance of showers throughout the day. NightMostly cloudy, with a low around 65°F18°C. Breezy from the S at 8 to 9 mph12 to 14 km/h. 26% chance of showers throughout the night.
	FridaySep 18	73°F23°C	62°F17°C	0.17 in4.4 mm· 20%	52%	Showers	W 8 mph13 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 62°F17°C. Breezy from the W at 9 mph14 km/h. 19% chance of showers throughout the day. NightMostly cloudy, with a low around 63°F17°C. Breezy from the W at 8 to 9 mph13 to 14 km/h. 20% chance of showers throughout the night.
	SaturdaySep 19	71°F21°C	56°F13°C	0.14 in3.6 mm· 18%	50%	Showers	WNW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 71°F21°C and morning low of 56°F13°C. Breezy from the WNW at 8 mph13 km/h. 18% chance of showers throughout the day. NightPartly cloudy, with a low around 58°F15°C. Breezy from the WNW at 7 mph11 km/h. 18% chance of drizzle throughout the night.
	SundaySep 20	68°F20°C	54°F12°C	0.1 in2.5 mm· 14%	51%	Showers	N 8 mph12 km/h
DayMostly cloudy and warm, with a high of 68°F20°C and morning low of 54°F12°C. Breezy from the N at 8 to 9 mph13 to 14 km/h. 11% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 56°F13°C. Breezy from the N at 7 mph11 km/h. 14% chance of showers throughout the night.
	MondaySep 21	68°F20°C	53°F12°C	0.11 in2.8 mm· 16%	53%	Drizzle	ENE 8 mph12 km/h
DayMostly cloudy and mild, with a high of 68°F20°C and morning low of 53°F12°C. Breezy from the NE at 8 to 9 mph13 to 14 km/h. 14% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 55°F13°C. Breezy from the ENE at 7 mph11 km/h. 16% chance of drizzle throughout the night.
	TuesdaySep 22	67°F19°C	53°F12°C	0.14 in3.5 mm· 17%	63%	Showers	ESE 7 mph12 km/h
DayMostly cloudy and mild, with a high of 67°F19°C and morning low of 53°F12°C. Breezy from the SE at 8 mph13 km/h. 17% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 54°F12°C. Breezy from the E at 7 mph11 km/h. 16% chance of showers throughout the night.
	WednesdaySep 23	69°F20°C	54°F12°C	0.08 in2 mm· 17%	60%	Drizzle	SE 8 mph12 km/h
DayMostly cloudy and warm, with a high of 69°F20°C and morning low of 54°F12°C. Breezy from the SE at 8 to 9 mph13 to 14 km/h. 15% chance of drizzle throughout the day. NightMostly cloudy, with a low around 55°F13°C. Breezy from the SE at 7 mph11 km/h. 17% chance of drizzle throughout the night.

Nearby Cities

Lake in the Hills4 mi7 km Cary4 mi7 km Algonquin5 mi9 km McHenry7 mi11 km Huntley8 mi12 km Woodstock8 mi14 km

About This Forecast

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Coordinates: 42.2411°N, 88.3162°W·Elevation: 279m·Timezone: America/Chicago·Population: 40,448