If you're looking for summer vibes, the best time to travel to Arlington Heights is in June, July and August, when the average temperature reaches 23.89 °C, while July, September and June are the 3 sunniest months of the year, with an average of 134.2 hours.
However, if you prefer colder temperatures, make sure you visit Arlington Heights during January, February or March to experience an average of -4.4 °C.
For those who don't care too much about temperatures, but want to avoid getting wet in the rain, it's important to avoid travelling during February, March and April, when the average precipitation in Arlington Heights is 7.5 mm, while the months of January, February and March are drier, with an average of 0 mm.