Current Conditions

Arlington Heights, Illinois

74°F23°C

Rain

Wind

E 4 mph6 km/h

Humidity

90%

Cloud Cover

29%

As of Wednesday, August 12, 2026 at 10:26 PM CDT

Today's Outlook

Night

Mostly cloudy, with a low around 71°F22°C. Light wind from the E around 4 mph6 km/h. 66% chance of rain in the evening.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 76°F25°C	Low 71°F22°C	Precip 0.26 in6.7 mm88%	Cloud 82%	Wind E 4 mph7 km/h	Thursday: Overcast and warm, with a high of 76°F25°C and morning low of 72°F22°C. Light wind from the ESE around 5 mph7 km/h. 88% chance of rain around midday. Heavy, humid air. Thursday Night: Mostly cloudy, with a low around 71°F22°C. Light wind from the E around 4 mph6 km/h. 66% chance of rain in the evening.
Light Rain	High 77°F25°C	Low 72°F22°C	Precip 0.17 in4.3 mm44%	Cloud 94%	Wind E 6 mph10 km/h	Friday: Overcast and warm, with a high of 77°F25°C and morning low of 72°F22°C. Breezy from the E at 7 mph10 km/h. 44% chance of light rain throughout the day. Humid. Friday Night: Overcast, with a low around 72°F22°C. Light wind from the ENE around 6 mph9 km/h. 39% chance of light rain throughout the night.
Rain	High 81°F27°CFeels 86°F30°C	Low 73°F23°C	Precip 0.57 in14.6 mm62%	Cloud 90%	Wind SSE 6 mph10 km/h	Saturday: Overcast and warm, with a high of 81°F27°C and morning low of 73°F23°C. Breezy from the SSE at 6 to 7 mph10 to 11 km/h. 62% chance of rain throughout the day. Heavy, humid air. Saturday Night: Overcast, with a low around 73°F23°C. Light wind from the SE around 5 mph9 km/h. 61% chance of rain throughout the night.
Light Rain	High 83°F28°CFeels 88°F31°C	Low 74°F23°C	Precip 0.22 in5.7 mm39%	Cloud 79%	Wind WNW 7 mph12 km/h	Sunday: Overcast and warm, with a high of 83°F28°C and morning low of 75°F24°C. Breezy from the WNW at 8 to 9 mph13 to 14 km/h. 34% chance of light rain throughout the day. Heavy, humid air. Sunday Night: Mostly cloudy, with a low around 74°F23°C. Breezy from the W at 7 mph11 km/h. 39% chance of light rain throughout the night.
Drizzle	High 77°F25°C	Low 69°F20°C	Precip 0.04 in1 mm19%	Cloud 62%	Wind NNE 7 mph10 km/h	Monday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 69°F20°C. Breezy from the NNE at 7 to 8 mph12 to 13 km/h. 18% chance of drizzle throughout the day. Monday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the NNE at 6 to 8 mph9 to 13 km/h. 19% chance of drizzle overnight.
Partly Cloudy	High 82°F28°C	Low 65°F18°C	Precip 0.01 in0.2 mm7%	Cloud 53%	Wind SSW 5 mph9 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 5 to 7 mph9 to 12 km/h. Tuesday Night: Partly cloudy, with a low around 65°F18°C. Breezy from the SSW at 5 to 8 mph9 to 12 km/h.
Light Rain	High 82°F28°CFeels 86°F30°C	Low 71°F21°C	Precip 0.26 in6.7 mm33%	Cloud 74%	Wind SW 8 mph13 km/h	Wednesday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 71°F21°C. Breezy from the SW at 9 mph14 km/h. 30% chance of light rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 71°F22°C. Breezy from the SW at 8 to 9 mph13 to 14 km/h. 33% chance of light rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdayAug 13	76°F25°C	71°F22°C	0.26 in6.7 mm· 88%	82%	Rain	E 4 mph7 km/h
DayOvercast and warm, with a high of 76°F25°C and morning low of 72°F22°C. Light wind from the ESE around 5 mph7 km/h. 88% chance of rain around midday. Heavy, humid air. NightMostly cloudy, with a low around 71°F22°C. Light wind from the E around 4 mph6 km/h. 66% chance of rain in the evening.
	FridayAug 14	77°F25°C	72°F22°C	0.17 in4.3 mm· 44%	94%	Light Rain	E 6 mph10 km/h
DayOvercast and warm, with a high of 77°F25°C and morning low of 72°F22°C. Breezy from the E at 7 mph10 km/h. 44% chance of light rain throughout the day. Humid. NightOvercast, with a low around 72°F22°C. Light wind from the ENE around 6 mph9 km/h. 39% chance of light rain throughout the night.
	SaturdayAug 15	81°F27°C Feels 86°F30°C	73°F23°C	0.57 in14.6 mm· 62%	90%	Rain	SSE 6 mph10 km/h
DayOvercast and warm, with a high of 81°F27°C and morning low of 73°F23°C. Breezy from the SSE at 6 to 7 mph10 to 11 km/h. 62% chance of rain throughout the day. Heavy, humid air. NightOvercast, with a low around 73°F23°C. Light wind from the SE around 5 mph9 km/h. 61% chance of rain throughout the night.
	SundayAug 16	83°F28°C Feels 88°F31°C	74°F23°C	0.22 in5.7 mm· 39%	79%	Light Rain	WNW 7 mph12 km/h
DayOvercast and warm, with a high of 83°F28°C and morning low of 75°F24°C. Breezy from the WNW at 8 to 9 mph13 to 14 km/h. 34% chance of light rain throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 74°F23°C. Breezy from the W at 7 mph11 km/h. 39% chance of light rain throughout the night.
	MondayAug 17	77°F25°C	69°F20°C	0.04 in1 mm· 19%	62%	Drizzle	NNE 7 mph10 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 69°F20°C. Breezy from the NNE at 7 to 8 mph12 to 13 km/h. 18% chance of drizzle throughout the day. NightMostly cloudy, with a low around 69°F21°C. Breezy from the NNE at 6 to 8 mph9 to 13 km/h. 19% chance of drizzle overnight.
	TuesdayAug 18	82°F28°C	65°F18°C	0.01 in0.2 mm· 7%	53%	Partly Cloudy	SSW 5 mph9 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 5 to 7 mph9 to 12 km/h. NightPartly cloudy, with a low around 65°F18°C. Breezy from the SSW at 5 to 8 mph9 to 12 km/h.
	WednesdayAug 19	82°F28°C Feels 86°F30°C	71°F21°C	0.26 in6.7 mm· 33%	74%	Light Rain	SW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 71°F21°C. Breezy from the SW at 9 mph14 km/h. 30% chance of light rain throughout the day. Humid. NightMostly cloudy, with a low around 71°F22°C. Breezy from the SW at 8 to 9 mph13 to 14 km/h. 33% chance of light rain throughout the night.
	ThursdayAug 20	78°F25°C	69°F21°C	0.13 in3.2 mm· 21%	56%	Showers	NNE 7 mph12 km/h
DayMostly cloudy and warm, with a high of 78°F25°C and morning low of 69°F21°C. Breezy from the NNE at 8 mph13 km/h. 20% chance of drizzle throughout the day. NightPartly cloudy, with a low around 70°F21°C. Breezy from the NNE at 7 mph11 km/h. 21% chance of showers throughout the night.
	FridayAug 21	79°F26°C	66°F19°C	0.11 in2.8 mm· 18%	45%	Showers	ESE 6 mph10 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 66°F19°C. Breezy from the SSW at 7 to 8 mph11 to 13 km/h. 18% chance of drizzle throughout the day. NightPartly cloudy, with a low around 67°F19°C. Light wind from the ENE around 6 mph10 km/h. 15% chance of showers throughout the night.
	SaturdayAug 22	80°F27°C	67°F19°C	0.07 in1.8 mm· 14%	43%	Drizzle	WSW 7 mph11 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 67°F19°C. Breezy from the WSW at 7 to 8 mph11 to 13 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 67°F20°C. Light wind from the WSW around 6 mph10 km/h. 11% chance of drizzle throughout the night.
	SundayAug 23	80°F26°C	67°F19°C	0.06 in1.5 mm· 10%	46%	Drizzle	NNW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 80°F26°C and morning low of 67°F19°C. Breezy from the NNW at 7 to 8 mph12 to 12 km/h. 10% chance of drizzle throughout the day. NightPartly cloudy, with a low around 67°F20°C. Light wind from the NW around 7 mph11 km/h. 10% chance of drizzle throughout the night.
	MondayAug 24	80°F27°C	66°F19°C	0.03 in0.8 mm· 8%	36%	Clear	NW 7 mph12 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 66°F19°C. Breezy from the WNW at 8 mph12 km/h. NightPartly cloudy, with a low around 67°F19°C. Breezy from the N at 7 mph11 km/h.
	TuesdayAug 25	80°F27°C	66°F19°C	0.03 in0.8 mm· 12%	37%	Drizzle	SE 7 mph11 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 66°F19°C. Breezy from the SSE at 7 to 8 mph11 to 12 km/h. 12% chance of drizzle. NightPartly cloudy, with a low around 66°F19°C. Breezy from the ESE at 7 mph11 km/h.
	WednesdayAug 26	80°F27°C	66°F19°C	0.05 in1.3 mm· 9%	40%	Partly Cloudy	E 7 mph11 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 66°F19°C. Breezy from the E at 7 to 8 mph11 to 13 km/h. NightPartly cloudy, with a low around 67°F19°C. Breezy from the E at 7 mph10 km/h.
	ThursdayAug 27	79°F26°C	66°F19°C	0.06 in1.6 mm· 15%	50%	Drizzle	E 7 mph11 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 66°F19°C. Breezy from the E at 7 to 8 mph12 to 13 km/h. 15% chance of drizzle throughout the day. NightPartly cloudy, with a low around 67°F20°C. Breezy from the ENE at 7 mph11 km/h. 10% chance of drizzle throughout the night.

Nearby Cities

Rolling Meadows2 mi3 km Prospect Heights2 mi4 km Mount Prospect3 mi4 km Palatine3 mi5 km Wheeling4 mi7 km Buffalo Grove4 mi7 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: 42.0884°N, 87.9806°W·Elevation: 214m·Timezone: America/Chicago·Population: 75,926