Current Conditions

McHenry, Illinois

69°F20°C

Clear

Wind

WSW 11 mph18 km/h

Humidity

80%

Cloud Cover

As of Tuesday, October 13, 2026 at 5:05 AM CDT

Today's Outlook

Night

Partly cloudy, with a low around 77°F25°C. Breezy from the SW at 12 to 13 mph20 to 21 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 79°F26°C	Low 77°F25°C	Precip 0 in0 mm—	Cloud 29%	Wind SW 12 mph20 km/h	Monday Night: Partly cloudy, with a low around 77°F25°C. Breezy from the SW at 12 to 13 mph20 to 21 km/h.
Showers	High 76°F24°C	Low 65°F19°C	Precip 0.05 in1.3 mm59%	Cloud 15%	Wind W 8 mph13 km/h	Tuesday: Mostly clear and warm, with a high of 74°F23°C and morning low of 68°F20°C. Breezy from the W at 8 to 11 mph13 to 17 km/h. Tuesday Night: Mostly clear, with a low around 65°F19°C. Breezy from the WSW at 8 to 13 mph13 to 21 km/h. 59% chance of showers in the evening.
Light Rain	High 64°F18°C	Low 57°F14°C	Precip 0.23 in5.9 mm78%	Cloud 97%	Wind NE 8 mph13 km/h	Wednesday: Overcast and mild, with a high of 61°F16°C. Breezy from the NE at 8 to 9 mph13 to 15 km/h. 48% chance of light rain in the morning. Wednesday Night: Overcast, with a low around 57°F14°C. Breezy from the NE at 8 to 9 mph13 to 15 km/h. 78% chance of light rain overnight.
Rain	High 58°F15°C	Low 55°F13°C	Precip 0.39 in9.8 mm89%	Cloud 99%	Wind ESE 8 mph14 km/h	Thursday: Overcast and mild, with a high of 58°F15°C. Breezy from the ESE at 8 mph13 km/h. 89% chance of rain in the morning. Thursday Night: Overcast, with a low around 55°F13°C. Breezy from the ENE at 9 to 12 mph15 to 20 km/h. 88% chance of light rain in the evening.
Showers	High 54°F12°C	Low 43°F6°CFeels 37°F3°C	Precip 0.06 in1.6 mm50%	Cloud 59%	Wind NW 15 mph24 km/h	Friday: Mostly cloudy and mild, with a high of 51°F10°C. Windy from the NW at 17 to 19 mph27 to 30 km/h. 36% chance of drizzle around midday. Dry air. Friday Night: Mostly cloudy, with a low around 43°F6°C. Breezy from the NW at 13 to 15 mph21 to 25 km/h. 50% chance of showers overnight.
Clear	High 53°F12°C	Low 34°F1°CFeels 28°F-2°C	Precip 0 in0 mm—	Cloud 3%	Wind WSW 9 mph14 km/h	Saturday: Mostly clear and mild, with a high of 53°F12°C and morning low of 34°F1°C. Breezy from the WSW at 8 to 9 mph13 to 15 km/h. Very dry. Saturday Night: Mostly clear, with a low around 34°F1°C. Frost likely. Breezy from the WSW at 9 to 11 mph15 to 17 km/h.
Clear	High 62°F16°C	Low 41°F5°CFeels 34°F1°C	Precip 0 in0 mm—	Cloud 17%	Wind SSW 11 mph18 km/h	Sunday: Mostly clear and mild, with a high of 62°F16°C and morning low of 41°F5°C. Breezy from the SW at 12 to 13 mph19 to 21 km/h. Dry air. Sunday Night: Partly cloudy, with a low around 41°F5°C. Breezy from the SSW at 11 mph18 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	MondayOct 12	79°F26°C	77°F25°C	0 in0 mm· —	29%	Clear	SW 12 mph20 km/h
NightPartly cloudy, with a low around 77°F25°C. Breezy from the SW at 12 to 13 mph20 to 21 km/h.
	TuesdayOct 13	76°F24°C	65°F19°C	0.05 in1.3 mm· 59%	15%	Showers	W 8 mph13 km/h
DayMostly clear and warm, with a high of 74°F23°C and morning low of 68°F20°C. Breezy from the W at 8 to 11 mph13 to 17 km/h. NightMostly clear, with a low around 65°F19°C. Breezy from the WSW at 8 to 13 mph13 to 21 km/h. 59% chance of showers in the evening.
	WednesdayOct 14	64°F18°C	57°F14°C	0.23 in5.9 mm· 78%	97%	Light Rain	NE 8 mph13 km/h
DayOvercast and mild, with a high of 61°F16°C. Breezy from the NE at 8 to 9 mph13 to 15 km/h. 48% chance of light rain in the morning. NightOvercast, with a low around 57°F14°C. Breezy from the NE at 8 to 9 mph13 to 15 km/h. 78% chance of light rain overnight.
	ThursdayOct 15	58°F15°C	55°F13°C	0.39 in9.8 mm· 89%	99%	Rain	ESE 8 mph14 km/h
DayOvercast and mild, with a high of 58°F15°C. Breezy from the ESE at 8 mph13 km/h. 89% chance of rain in the morning. NightOvercast, with a low around 55°F13°C. Breezy from the ENE at 9 to 12 mph15 to 20 km/h. 88% chance of light rain in the evening.
	FridayOct 16	54°F12°C	43°F6°C Feels 37°F3°C	0.06 in1.6 mm· 50%	59%	Showers	NW 15 mph24 km/h
DayMostly cloudy and mild, with a high of 51°F10°C. Windy from the NW at 17 to 19 mph27 to 30 km/h. 36% chance of drizzle around midday. Dry air. NightMostly cloudy, with a low around 43°F6°C. Breezy from the NW at 13 to 15 mph21 to 25 km/h. 50% chance of showers overnight.
	SaturdayOct 17	53°F12°C	34°F1°C Feels 28°F-2°C	0 in0 mm· —	3%	Clear	WSW 9 mph14 km/h
DayMostly clear and mild, with a high of 53°F12°C and morning low of 34°F1°C. Breezy from the WSW at 8 to 9 mph13 to 15 km/h. Very dry. NightMostly clear, with a low around 34°F1°C. Frost likely. Breezy from the WSW at 9 to 11 mph15 to 17 km/h.
	SundayOct 18	62°F16°C	41°F5°C Feels 34°F1°C	0 in0 mm· —	17%	Clear	SSW 11 mph18 km/h
DayMostly clear and mild, with a high of 62°F16°C and morning low of 41°F5°C. Breezy from the SW at 12 to 13 mph19 to 21 km/h. Dry air. NightPartly cloudy, with a low around 41°F5°C. Breezy from the SSW at 11 mph18 km/h.
	MondayOct 19	62°F17°C	49°F9°C Feels 45°F7°C	0.02 in0.4 mm· 9%	63%	Partly Cloudy	SW 8 mph13 km/h
DayMostly cloudy and mild, with a high of 62°F17°C and morning low of 49°F9°C. Breezy from the SW at 8 to 9 mph13 to 14 km/h. Dry air. NightMostly cloudy, with a low around 49°F9°C. Breezy from the SSW at 9 to 12 mph14 to 19 km/h.
	TuesdayOct 20	66°F19°C	47°F8°C	0 in0.1 mm· 3%	24%	Clear	S 6 mph10 km/h
DayMostly clear and mild, with a high of 66°F19°C and morning low of 47°F8°C. Light wind from the SSE around 6 mph10 km/h. Dry air. NightPartly cloudy, with a low around 47°F9°C. Breezy from the S at 7 mph11 km/h.
	WednesdayOct 21	67°F20°C	53°F12°C	0.08 in2.1 mm· 24%	51%	Drizzle	SSE 8 mph13 km/h
DayMostly cloudy and mild, with a high of 67°F20°C and morning low of 53°F12°C. Breezy from the SSE at 8 to 9 mph13 to 14 km/h. 19% chance of drizzle in the morning. NightMostly cloudy, with a low around 53°F12°C. Breezy from the SSE at 8 to 9 mph13 to 15 km/h. 24% chance of drizzle in the evening.
	ThursdayOct 22	65°F18°C	58°F14°C	0.19 in4.7 mm· 36%	75%	Light Rain	SSW 9 mph15 km/h
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 58°F14°C. Breezy from the SW at 9 mph15 km/h. 32% chance of light rain in the morning. NightMostly cloudy, with a low around 58°F14°C. Breezy from the SSW at 9 to 10 mph15 to 16 km/h. 36% chance of light rain overnight.
	FridayOct 23	62°F16°C	54°F12°C	0.25 in6.3 mm· 32%	71%	Light Rain	SW 9 mph15 km/h
DayMostly cloudy and mild, with a high of 62°F16°C and morning low of 54°F12°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. 28% chance of light rain in the morning. NightMostly cloudy, with a low around 55°F13°C. Breezy from the SW at 9 mph15 km/h. 32% chance of light rain overnight.
	SaturdayOct 24	60°F16°C	52°F11°C	0.22 in5.5 mm· 26%	67%	Showers	SW 9 mph15 km/h
DayMostly cloudy and mild, with a high of 60°F16°C and morning low of 52°F11°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. 26% chance of showers in the morning. Dry air. NightMostly cloudy, with a low around 52°F11°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. 25% chance of showers overnight.
	SundayOct 25	56°F14°C	48°F9°C Feels 45°F7°C	0.11 in2.8 mm· 20%	62%	Drizzle	WSW 9 mph14 km/h
DayMostly cloudy and mild, with a high of 56°F14°C and morning low of 48°F9°C. Breezy from the W at 9 mph14 km/h. 20% chance of drizzle in the morning. Dry air. NightMostly cloudy, with a low around 49°F9°C. Breezy from the WSW at 9 mph14 km/h. 19% chance of drizzle overnight.
	MondayOct 26	54°F12°C	44°F7°C Feels 40°F4°C	0.07 in1.9 mm· 11%	59%	Freezing Drizzle	W 8 mph13 km/h
DayMostly cloudy and mild, with a high of 54°F12°C and morning low of 44°F7°C. Breezy from the W at 8 to 9 mph13 to 14 km/h. 11% chance of freezing drizzle in the morning. Dry air. NightMostly cloudy, with a low around 44°F7°C. Breezy from the W at 8 to 9 mph13 to 14 km/h. 11% chance of drizzle overnight.

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

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