Last updated: June 24, 2025
In October, the average temperature in Arlington Heights, United States is a cool 12°C (54°F), with a range that can dip to a chilly -3°C (26°F) and soar up to a warm 31°C (87°F). Expect 127 mm (5.0 in) of precipitation over roughly 13 days, contributing to a relatively high average humidity of 82%. Be prepared for varied weather as you explore this beautiful locale!
In October in Arlington Heights, the average temperature is 12°C (54°F). The maximum can reach 31°C (87°F), while the minimum can drop to as low as -3°C (26°F). This temperature range suggests that travelers should pack both warm and light clothing to accommodate the varied weather conditions.
In Arlington Heights in October, the total precipitation amount is 127 mm (5.0 in) spread over 13 days.
In Arlington Heights in October humidity is 82%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and sweat-inducing, which can be quite uncomfortable for traveling.
In Arlington Heights in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Arlington Heights, you can refer to this Hourly UV Index in Arlington Heights.
UV Risk Categories
Weather in Arlington Heights varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Arlington Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (26°F) | 61 mm (2.4 inches) | 82% | moderate |
| February Weather | -2°C (28°F) | 60 mm (2.4 inches) | 83% | moderate |
| March Weather | 4°C (39°F) | 79 mm (3.1 inches) | 84% | high |
| April Weather | 9°C (48°F) | 115 mm (4.5 inches) | 85% | very high |
| May Weather | 15°C (60°F) | 164 mm (6.4 inches) | 79% | very high |
| June Weather | 21°C (71°F) | 134 mm (5.3 inches) | 82% | very high |
| July Weather | 24°C (75°F) | 105 mm (4.1 inches) | 80% | very high |
| August Weather | 23°C (73°F) | 92 mm (3.6 inches) | 81% | very high |
| September Weather | 20°C (68°F) | 85 mm (3.3 inches) | 80% | very high |
| October Weather | 12°C (54°F) | 127 mm (5.0 inches) | 82% | high |
| November Weather | 4°C (39°F) | 55 mm (2.2 inches) | 88% | moderate |
| December Weather | 0°C (33°F) | 53 mm (2.1 inches) | 84% | low |