Current Conditions

McHenry, Illinois

75°F24°C

Light Rain

Wind

ESE 4 mph6 km/h

Humidity

85%

Cloud Cover

100%

As of Thursday, August 13, 2026 at 11:08 AM CDT

Today's Outlook

Day

Overcast and warm, with a high of 77°F25°C and morning low of 70°F21°C. Light wind from the E around 4 mph7 km/h. 70% chance of light rain around midday. Humid.

Night

Overcast, with a low around 72°F22°C. Light wind from the E around 4 mph7 km/h. 61% chance of light rain throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Light Rain	High 77°F25°C	Low 70°F21°C	Precip 0.11 in2.7 mm70%	Cloud 97%	Wind E 4 mph7 km/h	Thursday: Overcast and warm, with a high of 77°F25°C and morning low of 70°F21°C. Light wind from the E around 4 mph7 km/h. 70% chance of light rain around midday. Humid. Thursday Night: Overcast, with a low around 72°F22°C. Light wind from the E around 4 mph7 km/h. 61% chance of light rain throughout the night.
Rain	High 76°F24°C	Low 70°F21°C	Precip 0.41 in10.3 mm78%	Cloud 95%	Wind E 6 mph10 km/h	Friday: Overcast and warm, with a high of 76°F24°C and morning low of 70°F21°C. Breezy from the E at 7 to 8 mph11 to 13 km/h. 78% chance of rain throughout the day. Humid. Friday Night: Overcast, with a low around 71°F21°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h. 56% chance of light rain throughout the night.
Rain	High 78°F26°C	Low 71°F22°C	Precip 0.43 in11 mm78%	Cloud 92%	Wind SE 6 mph9 km/h	Saturday: Overcast and warm, with a high of 78°F26°C and morning low of 72°F22°C. Light wind from the SSE around 6 mph10 km/h. 78% chance of rain throughout the day. Heavy, humid air. Saturday Night: Overcast, with a low around 71°F22°C. Light wind from the SE around 5 mph8 km/h. 34% chance of light rain throughout the night.
Light Rain	High 83°F29°CFeels 89°F31°C	Low 73°F23°C	Precip 0.3 in7.6 mm47%	Cloud 82%	Wind WNW 7 mph11 km/h	Sunday: Overcast and warm, with a high of 83°F29°C and morning low of 74°F23°C. Breezy from the WNW at 8 mph13 km/h. 40% chance of light rain throughout the day. Heavy, humid air. Sunday Night: Mostly cloudy, with a low around 73°F23°C. Breezy from the WNW at 6 to 7 mph10 to 11 km/h. 47% chance of light rain throughout the night.
Drizzle	High 79°F26°C	Low 67°F19°C	Precip 0.02 in0.5 mm14%	Cloud 57%	Wind N 5 mph8 km/h	Monday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 67°F19°C. Light wind from the N around 5 mph8 km/h. 14% chance of drizzle. Monday Night: Partly cloudy, with a low around 68°F20°C. Breezy from the N at 5 to 7 mph8 to 11 km/h. 11% chance of drizzle overnight.
Drizzle	High 82°F28°C	Low 64°F18°C	Precip 0.03 in0.8 mm17%	Cloud 59%	Wind SW 7 mph11 km/h	Tuesday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 65°F18°C. Breezy from the SW at 7 to 9 mph12 to 15 km/h. 12% chance of drizzle in the afternoon. Tuesday Night: Mostly cloudy, with a low around 64°F18°C. Breezy from the SW at 6 to 7 mph9 to 12 km/h. 17% chance of drizzle in the evening.
Light Rain	High 78°F26°C	Low 69°F21°C	Precip 0.34 in8.6 mm55%	Cloud 76%	Wind SW 8 mph13 km/h	Wednesday: Mostly cloudy and warm, with a high of 78°F26°C and morning low of 69°F21°C. Breezy from the WSW at 8 mph13 km/h. 55% chance of light rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the SW at 8 mph12 km/h. 52% chance of light rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdayAug 13	77°F25°C	70°F21°C	0.11 in2.7 mm· 70%	97%	Light Rain	E 4 mph7 km/h
DayOvercast and warm, with a high of 77°F25°C and morning low of 70°F21°C. Light wind from the E around 4 mph7 km/h. 70% chance of light rain around midday. Humid. NightOvercast, with a low around 72°F22°C. Light wind from the E around 4 mph7 km/h. 61% chance of light rain throughout the night.
	FridayAug 14	76°F24°C	70°F21°C	0.41 in10.3 mm· 78%	95%	Rain	E 6 mph10 km/h
DayOvercast and warm, with a high of 76°F24°C and morning low of 70°F21°C. Breezy from the E at 7 to 8 mph11 to 13 km/h. 78% chance of rain throughout the day. Humid. NightOvercast, with a low around 71°F21°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h. 56% chance of light rain throughout the night.
	SaturdayAug 15	78°F26°C	71°F22°C	0.43 in11 mm· 78%	92%	Rain	SE 6 mph9 km/h
DayOvercast and warm, with a high of 78°F26°C and morning low of 72°F22°C. Light wind from the SSE around 6 mph10 km/h. 78% chance of rain throughout the day. Heavy, humid air. NightOvercast, with a low around 71°F22°C. Light wind from the SE around 5 mph8 km/h. 34% chance of light rain throughout the night.
	SundayAug 16	83°F29°C Feels 89°F31°C	73°F23°C	0.3 in7.6 mm· 47%	82%	Light Rain	WNW 7 mph11 km/h
DayOvercast and warm, with a high of 83°F29°C and morning low of 74°F23°C. Breezy from the WNW at 8 mph13 km/h. 40% chance of light rain throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 73°F23°C. Breezy from the WNW at 6 to 7 mph10 to 11 km/h. 47% chance of light rain throughout the night.
	MondayAug 17	79°F26°C	67°F19°C	0.02 in0.5 mm· 14%	57%	Drizzle	N 5 mph8 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 67°F19°C. Light wind from the N around 5 mph8 km/h. 14% chance of drizzle. NightPartly cloudy, with a low around 68°F20°C. Breezy from the N at 5 to 7 mph8 to 11 km/h. 11% chance of drizzle overnight.
	TuesdayAug 18	82°F28°C	64°F18°C	0.03 in0.8 mm· 17%	59%	Drizzle	SW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 65°F18°C. Breezy from the SW at 7 to 9 mph12 to 15 km/h. 12% chance of drizzle in the afternoon. NightMostly cloudy, with a low around 64°F18°C. Breezy from the SW at 6 to 7 mph9 to 12 km/h. 17% chance of drizzle in the evening.
	WednesdayAug 19	78°F26°C	69°F21°C	0.34 in8.6 mm· 55%	76%	Light Rain	SW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 69°F21°C. Breezy from the WSW at 8 mph13 km/h. 55% chance of light rain throughout the day. Humid. NightMostly cloudy, with a low around 69°F21°C. Breezy from the SW at 8 mph12 km/h. 52% chance of light rain throughout the night.
	ThursdayAug 20	76°F25°C	65°F18°C	0.14 in3.6 mm· 16%	50%	Showers	N 7 mph11 km/h
DayMostly cloudy and warm, with a high of 76°F25°C and morning low of 65°F18°C. Breezy from the N at 7 mph11 km/h. 14% chance of showers throughout the day. NightPartly cloudy, with a low around 65°F18°C. Breezy from the NNE at 6 to 7 mph10 to 11 km/h. 16% chance of showers throughout the night.
	FridayAug 21	79°F26°C	63°F17°C	0.08 in2.1 mm· 18%	46%	Drizzle	SW 6 mph9 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 63°F17°C. Breezy from the WSW at 6 to 7 mph10 to 11 km/h. 17% chance of drizzle throughout the day. NightPartly cloudy, with a low around 63°F17°C. Light wind from the S around 5 mph9 km/h. 18% chance of drizzle throughout the night.
	SaturdayAug 22	81°F27°C	65°F18°C	0.07 in1.9 mm· 16%	44%	Drizzle	SW 6 mph9 km/h
DayPartly cloudy and warm, with a high of 81°F27°C and morning low of 65°F18°C. Breezy from the WSW at 6 to 7 mph10 to 11 km/h. 16% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F18°C. Light wind from the SW around 5 mph9 km/h. 12% chance of drizzle throughout the night.
	SundayAug 23	82°F28°C	65°F18°C	0.06 in1.6 mm· 10%	43%	Drizzle	SSW 6 mph10 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 65°F18°C. Breezy from the SW at 7 mph11 km/h. 10% chance of drizzle throughout the day. NightPartly cloudy, with a low around 66°F19°C. Light wind from the S around 6 mph9 km/h.
	MondayAug 24	83°F28°C	66°F19°C	0.04 in1.1 mm· 10%	41%	Drizzle	S 6 mph10 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 66°F19°C. Breezy from the SSW at 7 to 8 mph11 to 12 km/h. NightPartly cloudy, with a low around 67°F19°C. Light wind from the S around 6 mph10 km/h. 10% chance of drizzle overnight.
	TuesdayAug 25	83°F28°C	67°F19°C	0.04 in1 mm· 10%	48%	Drizzle	SSW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 67°F19°C. Breezy from the SW at 7 mph11 km/h. 10% chance of drizzle throughout the day. NightPartly cloudy, with a low around 68°F20°C. Light wind from the S around 6 mph10 km/h.
	WednesdayAug 26	82°F28°C	67°F20°C	0.08 in2 mm· 13%	53%	Drizzle	E 7 mph11 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 67°F20°C. Breezy from the W at 7 to 8 mph12 to 13 km/h. 13% chance of drizzle throughout the day. NightPartly cloudy, with a low around 68°F20°C. Light wind from the E around 6 mph10 km/h. 12% chance of drizzle throughout the night.
	ThursdayAug 27	80°F27°C	66°F19°C	0.07 in1.9 mm· 17%	56%	Drizzle	NE 7 mph11 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 66°F19°C. Breezy from the NE at 7 to 8 mph12 to 13 km/h. 17% chance of drizzle throughout the day. NightMostly cloudy, with a low around 67°F19°C. Light wind from the NE around 6 mph10 km/h. 13% chance of drizzle throughout the night.

Nearby Cities

Crystal Lake7 mi11 km Cary9 mi14 km Round Lake9 mi14 km Woodstock9 mi15 km Round Lake Beach9 mi15 km Lake in the Hills11 mi18 km

About This Forecast

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Coordinates: 42.3334°N, 88.2668°W·Elevation: 243m·Timezone: America/Chicago·Population: 26,657