Current Conditions

McHenry, Illinois

88°F31°C

Drizzle

Feels like95°F35°C

Wind

WSW 5 mph8 km/h

Humidity

61%

Cloud Cover

31%

As of Wednesday, September 2, 2026 at 7:53 PM CDT

Today's Outlook

Night

Partly cloudy, with a low around 77°F25°C. Light wind from the S around 6 mph9 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Drizzle	High 88°F31°CFeels 94°F35°C	Low 75°F24°C	Precip 0.04 in0.9 mm20%	Cloud 48%	Wind SSW 5 mph9 km/h	Thursday: Mostly cloudy and hot, with a high of 88°F31°C and morning low of 75°F24°C — feels like 95°F35°C. Light wind from the SW around 5 mph9 km/h. 20% chance of drizzle around midday. Heavy, humid air. Thursday Night: Partly cloudy, with a low around 77°F25°C. Light wind from the S around 6 mph9 km/h.
Showers	High 89°F32°CFeels 96°F36°C	Low 74°F23°C	Precip 0.12 in3 mm29%	Cloud 60%	Wind SE 6 mph10 km/h	Friday: Mostly cloudy and hot, with a high of 89°F32°C and morning low of 74°F23°C — feels like 97°F36°C. Light wind from the SSE around 6 mph10 km/h. 19% chance of drizzle throughout the day. Heat risk in the afternoon. Friday Night: Partly cloudy, with a low around 75°F24°C. Light wind from the ESE around 6 mph9 km/h. 29% chance of showers throughout the night.
Showers	High 82°F28°CFeels 87°F31°C	Low 72°F22°C	Precip 0.13 in3.2 mm28%	Cloud 56%	Wind ENE 6 mph10 km/h	Saturday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 73°F23°C — feels like 88°F31°C. Breezy from the ENE at 7 to 8 mph11 to 13 km/h. 28% chance of showers throughout the day. Heavy, humid air. Saturday Night: Mostly cloudy, with a low around 72°F22°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h. 26% chance of showers throughout the night.
Partly Cloudy	High 80°F27°C	Low 69°F21°C	Precip 0.02 in0.6 mm6%	Cloud 68%	Wind E 6 mph9 km/h	Sunday: Mostly cloudy and warm, with a high of 80°F27°C and morning low of 69°F21°C. Breezy from the ESE at 6 to 7 mph9 to 11 km/h. Humid. Sunday Night: Mostly cloudy, with a low around 70°F21°C. Light wind from the E around 5 mph9 km/h.
Partly Cloudy	High 82°F28°C	Low 68°F20°C	Precip 0.02 in0.6 mm7%	Cloud 66%	Wind SE 6 mph9 km/h	Monday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 68°F20°C. Breezy from the SE at 6 to 7 mph9 to 11 km/h. Monday Night: Mostly cloudy, with a low around 69°F20°C. Light wind from the SE around 6 mph9 km/h.
Partly Cloudy	High 88°F31°CFeels 91°F33°C	Low 68°F20°C	Precip 0.04 in1 mm8%	Cloud 58%	Wind S 8 mph13 km/h	Tuesday: Mostly cloudy and hot, with a high of 88°F31°C and morning low of 68°F20°C. Breezy from the S at 9 to 10 mph14 to 16 km/h. Humid. Tuesday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the S at 8 to 10 mph13 to 16 km/h.
Drizzle	High 90°F32°CFeels 95°F35°C	Low 75°F24°C	Precip 0.07 in1.9 mm16%	Cloud 49%	Wind SW 9 mph15 km/h	Wednesday: Partly cloudy and hot, with a high of 90°F32°C and morning low of 75°F24°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. 16% chance of drizzle throughout the day. Heat risk in the afternoon. Wednesday Night: Mostly cloudy, with a low around 76°F24°C. Breezy from the SSW at 9 to 10 mph14 to 16 km/h. 16% chance of drizzle throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdaySep 3	88°F31°C Feels 94°F35°C	75°F24°C	0.04 in0.9 mm· 20%	48%	Drizzle	SSW 5 mph9 km/h
DayMostly cloudy and hot, with a high of 88°F31°C and morning low of 75°F24°C — feels like 95°F35°C. Light wind from the SW around 5 mph9 km/h. 20% chance of drizzle around midday. Heavy, humid air. NightPartly cloudy, with a low around 77°F25°C. Light wind from the S around 6 mph9 km/h.
	FridaySep 4	89°F32°C Feels 96°F36°C	74°F23°C	0.12 in3 mm· 29%	60%	Showers	SE 6 mph10 km/h
DayMostly cloudy and hot, with a high of 89°F32°C and morning low of 74°F23°C — feels like 97°F36°C. Light wind from the SSE around 6 mph10 km/h. 19% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 75°F24°C. Light wind from the ESE around 6 mph9 km/h. 29% chance of showers throughout the night.
	SaturdaySep 5	82°F28°C Feels 87°F31°C	72°F22°C	0.13 in3.2 mm· 28%	56%	Showers	ENE 6 mph10 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 73°F23°C — feels like 88°F31°C. Breezy from the ENE at 7 to 8 mph11 to 13 km/h. 28% chance of showers throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 72°F22°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h. 26% chance of showers throughout the night.
	SundaySep 6	80°F27°C	69°F21°C	0.02 in0.6 mm· 6%	68%	Partly Cloudy	E 6 mph9 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 69°F21°C. Breezy from the ESE at 6 to 7 mph9 to 11 km/h. Humid. NightMostly cloudy, with a low around 70°F21°C. Light wind from the E around 5 mph9 km/h.
	MondaySep 7	82°F28°C	68°F20°C	0.02 in0.6 mm· 7%	66%	Partly Cloudy	SE 6 mph9 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 68°F20°C. Breezy from the SE at 6 to 7 mph9 to 11 km/h. NightMostly cloudy, with a low around 69°F20°C. Light wind from the SE around 6 mph9 km/h.
	TuesdaySep 8	88°F31°C Feels 91°F33°C	68°F20°C	0.04 in1 mm· 8%	58%	Partly Cloudy	S 8 mph13 km/h
DayMostly cloudy and hot, with a high of 88°F31°C and morning low of 68°F20°C. Breezy from the S at 9 to 10 mph14 to 16 km/h. Humid. NightMostly cloudy, with a low around 69°F21°C. Breezy from the S at 8 to 10 mph13 to 16 km/h.
	WednesdaySep 9	90°F32°C Feels 95°F35°C	75°F24°C	0.07 in1.9 mm· 16%	49%	Drizzle	SW 9 mph15 km/h
DayPartly cloudy and hot, with a high of 90°F32°C and morning low of 75°F24°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. 16% chance of drizzle throughout the day. Heat risk in the afternoon. NightMostly cloudy, with a low around 76°F24°C. Breezy from the SSW at 9 to 10 mph14 to 16 km/h. 16% chance of drizzle throughout the night.
	ThursdaySep 10	83°F28°C	71°F22°C	0.25 in6.3 mm· 35%	55%	Showers	WSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 71°F22°C. Breezy from the W at 9 mph14 km/h. 32% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 72°F22°C. Breezy from the WSW at 8 to 9 mph12 to 14 km/h. 35% chance of showers throughout the night.
	FridaySep 11	80°F27°C	67°F19°C	0.19 in4.7 mm· 21%	49%	Showers	WSW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 67°F19°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h. 21% chance of showers throughout the day. NightPartly cloudy, with a low around 68°F20°C. Breezy from the WSW at 7 mph11 km/h. 19% chance of showers throughout the night.
	SaturdaySep 12	79°F26°C	64°F18°C	0.13 in3.4 mm· 18%	52%	Showers	SSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 64°F18°C. Breezy from the SSW at 9 mph14 km/h. 18% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F19°C. Breezy from the SSW at 8 mph12 km/h. 17% chance of showers throughout the night.
	SundaySep 13	79°F26°C	65°F18°C	0.2 in5.1 mm· 21%	60%	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 SSW at 9 to 10 mph14 to 16 km/h. 21% chance of showers throughout the day. NightMostly cloudy, with a low around 66°F19°C. Breezy from the SSW at 8 mph12 km/h. 21% chance of showers throughout the night.
	MondaySep 14	79°F26°C	65°F18°C	0.15 in3.9 mm· 22%	53%	Showers	SW 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 8 to 9 mph13 to 15 km/h. 17% chance of drizzle throughout the day. NightPartly cloudy, with a low around 66°F19°C. Breezy from the SSW at 7 to 8 mph12 to 13 km/h. 22% chance of showers throughout the night.
	TuesdaySep 15	77°F25°C	63°F17°C	0.15 in3.7 mm· 19%	49%	Showers	SW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 63°F17°C. Breezy from the WSW at 8 to 9 mph12 to 14 km/h. 15% chance of drizzle throughout the day. NightPartly cloudy, with a low around 64°F18°C. Breezy from the SW at 7 mph11 km/h. 19% chance of showers throughout the night.
	WednesdaySep 16	76°F24°C	61°F16°C	0.11 in2.9 mm· 14%	45%	Showers	SW 7 mph12 km/h
DayPartly cloudy and warm, with a high of 76°F24°C and morning low of 61°F16°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h. 13% chance of drizzle throughout the day. NightPartly cloudy, with a low around 62°F17°C. Breezy from the SSW at 7 mph11 km/h. 14% chance of showers throughout the night.
	ThursdaySep 17	75°F24°C	60°F15°C	0.08 in2 mm· 11%	47%	Drizzle	WSW 7 mph12 km/h
DayPartly cloudy and warm, with a high of 75°F24°C and morning low of 60°F15°C. Breezy from the W at 8 to 9 mph12 to 14 km/h. 11% chance of drizzle throughout the day. NightPartly cloudy, with a low around 61°F16°C. Breezy from the SW at 7 mph11 km/h. 11% 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