Current Conditions

McHenry, Illinois

73°F23°C

Rain

Wind

SW 8 mph12 km/h

Humidity

70%

Cloud Cover

99%

As of Tuesday, September 8, 2026 at 11:54 PM CDT

Today's Outlook

Night

Mostly cloudy, with a low around 71°F22°C. Breezy from the WSW at 7 to 9 mph12 to 15 km/h. 90% chance of rain overnight.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 80°F27°C	Low 71°F21°C	Precip 0.61 in15.5 mm99%	Cloud 84%	Wind WSW 8 mph13 km/h	Wednesday: Overcast and warm, with a high of 80°F27°C and morning low of 71°F21°C. Breezy from the WSW at 9 to 10 mph14 to 16 km/h. 99% chance of rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 71°F22°C. Breezy from the WSW at 7 to 9 mph12 to 15 km/h. 90% chance of rain overnight.
Partly Cloudy	High 77°F25°C	Low 63°F17°C	Precip 0 in0 mm—	Cloud 61%	Wind N 5 mph8 km/h	Thursday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 64°F18°C. Light wind from the N around 5 mph8 km/h. Thursday Night: Partly cloudy, with a low around 63°F17°C. Light wind from the NW around 5 mph9 km/h.
Clear	High 80°F27°C	Low 58°F14°C	Precip 0 in0 mm—	Cloud 11%	Wind SSE 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 0.03 in0.8 mm16%	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 10 mph13 to 16 km/h. 14% chance of drizzle in the afternoon. Saturday Night: Partly cloudy, with a low around 65°F18°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 16% chance of drizzle in the evening.
Drizzle	High 73°F23°C	Low 61°F16°C	Precip 0.03 in0.8 mm12%	Cloud 35%	Wind NNW 7 mph11 km/h	Sunday: Partly cloudy and warm, with a high of 73°F23°C and morning low of 61°F16°C. Breezy from the NNW at 7 to 8 mph12 to 12 km/h. 12% chance of drizzle in the afternoon. Sunday Night: Partly cloudy, with a low around 61°F16°C. Breezy from the NNW at 6 to 7 mph10 to 12 km/h. 10% chance of drizzle throughout the night.
Showers	High 75°F24°C	Low 59°F15°C	Precip 0.2 in5.1 mm29%	Cloud 58%	Wind SSE 9 mph15 km/h	Monday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 59°F15°C. Breezy from the SE at 10 to 12 mph15 to 19 km/h. 29% chance of showers throughout the day. Monday Night: Partly cloudy, with a low around 59°F15°C. Breezy from the SSE at 9 to 13 mph15 to 21 km/h. 18% chance of showers throughout the night.
Light Rain	High 81°F27°C	Low 69°F21°C	Precip 0.17 in4.4 mm34%	Cloud 75%	Wind SW 10 mph16 km/h	Tuesday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 69°F21°C. Breezy from the WSW at 10 to 11 mph16 to 17 km/h. 23% chance of drizzle throughout the day. Tuesday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the SW at 10 to 14 mph15 to 22 km/h. 34% chance of light rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	80°F27°C	71°F21°C	0.61 in15.5 mm· 99%	84%	Rain	WSW 8 mph13 km/h
DayOvercast and warm, with a high of 80°F27°C and morning low of 71°F21°C. Breezy from the WSW at 9 to 10 mph14 to 16 km/h. 99% chance of rain throughout the day. Humid. NightMostly cloudy, with a low around 71°F22°C. Breezy from the WSW at 7 to 9 mph12 to 15 km/h. 90% chance of rain overnight.
	ThursdaySep 10	77°F25°C	63°F17°C	0 in0 mm· —	61%	Partly Cloudy	N 5 mph8 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 64°F18°C. Light wind from the N around 5 mph8 km/h. NightPartly cloudy, with a low around 63°F17°C. Light wind from the NW around 5 mph9 km/h.
	FridaySep 11	80°F27°C	58°F14°C	0 in0 mm· —	11%	Clear	SSE 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	0.03 in0.8 mm· 16%	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 10 mph13 to 16 km/h. 14% chance of drizzle in the afternoon. NightPartly cloudy, with a low around 65°F18°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 16% chance of drizzle in the evening.
	SundaySep 13	73°F23°C	61°F16°C	0.03 in0.8 mm· 12%	35%	Drizzle	NNW 7 mph11 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 61°F16°C. Breezy from the NNW at 7 to 8 mph12 to 12 km/h. 12% chance of drizzle in the afternoon. NightPartly cloudy, with a low around 61°F16°C. Breezy from the NNW at 6 to 7 mph10 to 12 km/h. 10% chance of drizzle throughout the night.
	MondaySep 14	75°F24°C	59°F15°C	0.2 in5.1 mm· 29%	58%	Showers	SSE 9 mph15 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 59°F15°C. Breezy from the SE at 10 to 12 mph15 to 19 km/h. 29% chance of showers throughout the day. NightPartly cloudy, with a low around 59°F15°C. Breezy from the SSE at 9 to 13 mph15 to 21 km/h. 18% chance of showers throughout the night.
	TuesdaySep 15	81°F27°C	69°F21°C	0.17 in4.4 mm· 34%	75%	Light Rain	SW 10 mph16 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 69°F21°C. Breezy from the WSW at 10 to 11 mph16 to 17 km/h. 23% chance of drizzle throughout the day. NightMostly cloudy, with a low around 69°F21°C. Breezy from the SW at 10 to 14 mph15 to 22 km/h. 34% chance of light rain throughout the night.
	WednesdaySep 16	75°F24°C	64°F18°C	0.32 in8.1 mm· 38%	72%	Light Rain	E 6 mph10 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 64°F18°C. Breezy from the E at 6 to 7 mph10 to 11 km/h. 33% chance of light rain throughout the day. NightMostly cloudy, with a low around 65°F18°C. Light wind from the E around 6 mph10 km/h. 38% chance of showers throughout the night.
	ThursdaySep 17	81°F27°C	68°F20°C	0.28 in7 mm· 30%	58%	Showers	SSW 8 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. 29% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 68°F20°C. Breezy from the SSW at 8 mph13 km/h. 30% chance of showers throughout the night.
	FridaySep 18	75°F24°C	64°F18°C	0.17 in4.4 mm· 21%	53%	Showers	W 9 mph14 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 64°F18°C. Breezy from the W at 9 to 10 mph15 to 16 km/h. 21% chance of showers throughout the day. NightMostly cloudy, with a low around 65°F18°C. Breezy from the W at 8 to 9 mph14 to 14 km/h. 21% chance of showers throughout the night.
	SaturdaySep 19	70°F21°C	58°F14°C	0.13 in3.2 mm· 17%	52%	Drizzle	WNW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 58°F14°C. Breezy from the WNW at 9 to 10 mph14 to 15 km/h. 16% chance of drizzle throughout the day. NightPartly cloudy, with a low around 60°F15°C. Breezy from the WNW at 8 mph12 km/h. 17% chance of drizzle throughout the night.
	SundaySep 20	67°F20°C	54°F12°C	0.09 in2.4 mm· 15%	51%	Drizzle	NNW 8 mph12 km/h
DayMostly cloudy and mild, with a high of 67°F20°C and morning low of 54°F12°C. Breezy from the NNW at 8 to 9 mph13 to 14 km/h. 15% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 56°F13°C. Breezy from the N at 7 to 8 mph11 to 12 km/h. 15% chance of drizzle throughout the night.
	MondaySep 21	67°F20°C	53°F12°C	0.1 in2.6 mm· 12%	52%	Drizzle	NE 7 mph12 km/h
DayMostly cloudy and mild, with a high of 67°F20°C and morning low of 53°F12°C. Breezy from the NE at 8 mph13 km/h. 11% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 54°F12°C. Breezy from the NE at 7 mph11 km/h. 12% chance of drizzle throughout the night.
	TuesdaySep 22	69°F21°C	54°F12°C	0.11 in2.9 mm· 17%	54%	Showers	ESE 7 mph11 km/h
DayMostly cloudy and warm, with a high of 69°F21°C and morning low of 54°F12°C. Breezy from the ESE at 7 to 8 mph12 to 13 km/h. 17% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 55°F13°C. Breezy from the ESE at 7 mph11 km/h. 16% chance of showers throughout the night.
	WednesdaySep 23	71°F22°C	55°F13°C	0.08 in2.1 mm· 14%	53%	Drizzle	S 7 mph12 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 55°F13°C. Breezy from the S at 8 to 9 mph12 to 14 km/h. 14% chance of drizzle throughout the day. NightMostly cloudy, with a low around 56°F13°C. Breezy from the SSE at 7 mph11 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