Weather forecast for: Arlington Heights IL
Last Update: 12:21 am CST Nov 4, 2026
Overnight: Showers. Low around 60. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday: A 40 percent chance of showers, mainly before 10am. Mostly cloudy, with a temperature falling to around 56 by 5pm. Southwest wind around 15 mph, with gusts as high as 30 mph.
Wednesday Night: Mostly cloudy, with a low around 48. Southwest wind around 15 mph, with gusts as high as 25 mph.
Thursday: A 50 percent chance of showers, mainly after noon. Cloudy, with a high near 56. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night: Showers likely, mainly before midnight. Cloudy, with a low around 41. West wind 10 to 15 mph becoming north in the evening. Chance of precipitation is 60%.
Friday: Mostly cloudy, with a high near 50.
Friday Night: Partly cloudy, with a low around 35.
Saturday: Mostly sunny, with a high near 51.
Saturday Night: Partly cloudy, with a low around 35.
Sunday: Sunny, with a high near 56.
Sunday Night: Mostly clear, with a low around 36.
Monday: Sunny, with a high near 60.
Monday Night: Partly cloudy, with a low around 41.
Tuesday: Sunny, with a high near 61.