10-day forecast

Today Isolated storms 32% 52° 69° Today · UV 3 · Wind 7 mph · ☀ 6:58 AM – 6:22 PM
Sat 10 Mostly cloudy 2% 61° 79° Saturday, October 10 · UV 3 · Wind 9 mph · ☀ 6:59 AM – 6:20 PM
Sun 11 Mostly cloudy 0% 59° 71° Sunday, October 11 · UV 4 · Wind 7 mph · ☀ 7:00 AM – 6:18 PM
Mon 12 Drizzle 50% 58° 78° Monday, October 12 · UV 3 · Wind 9 mph · ☀ 7:02 AM – 6:17 PM
Tue 13 Mostly cloudy 0% 57° 69° Tuesday, October 13 · UV 2 · Wind 9 mph · ☀ 7:03 AM – 6:15 PM
Wed 14 Mostly cloudy 0% 54° 65° Wednesday, October 14 · UV 3 · Wind 9 mph · ☀ 7:04 AM – 6:13 PM
Thu 15 Showers 85% 55° 67° Thursday, October 15 · UV 0 · Wind 13 mph · ☀ 7:05 AM – 6:12 PM
Fri 16 Mostly cloudy 5% 47° 60° Friday, October 16 · UV 2 · Wind 13 mph · ☀ 7:06 AM – 6:10 PM
Sat 17 Mostly cloudy 0% 43° 56° Saturday, October 17 · UV 1 · Wind 11 mph · ☀ 7:07 AM – 6:09 PM
Sun 18 Partly cloudy 0% 42° 59° Sunday, October 18 · UV 2 · Wind 7 mph · ☀ 7:08 AM – 6:07 PM

14-day outlook & extended hourly ★ Premium

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About Arlington Heights weather

Arlington Heights is in Cook County, Illinois, United States at 42.09°, -87.98°. Right now it’s 53° and cloudy; today’s high is 69° with a 32% chance of rain.

Illinois has a humid continental climate with distinct seasons marked by cold, snowy winters and hot, humid summers. The state's flat terrain allows weather systems to move across without obstruction, leading to rapid temperature changes. Chicago's position on Lake Michigan creates a unique lake-effect weather pattern that can moderate summer heat and intensify winter snowfall.