Last updated: June 24, 2025
In Arlington Heights, United States, the average temperature in April hovers around 10°C (49°F), making for a crisp atmosphere. Be prepared for temperature fluctuations, with lows dipping to -4°C (25°F) and highs soaring up to 28°C (83°F). Expect significant precipitation during this month, totaling 120 mm (4.7 in) spread over approximately 12 days. Additionally, with an average humidity level of 83%, the air can feel quite moist, adding to the season's unique charm.
In April in Arlington Heights, the average temperature is 10°C (49°F). Maximum temperatures can reach 28°C (83°F), while the minimum can drop as low as -4°C (25°F). Be sure to pack layers to stay comfortable during your travels, as the weather can vary significantly!
In Arlington Heights in April, the precipitation amount is 120 mm (4.7 in) over a period of 12 days.
In Arlington Heights in April humidity is 83%. With an average temperature of 10°C (49°F), this humidity feels like a damp chill enveloping you, making outdoor activities feel more uncomfortable and potentially dampening your travel experience.
In Arlington Heights in April, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the 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 April’s weather to other months in Arlington Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (30°F) | 76 mm (3.0 inches) | 87% | moderate |
| February Weather | 0°C (33°F) | 109 mm (4.3 inches) | 85% | moderate |
| March Weather | 3°C (39°F) | 97 mm (3.8 inches) | 85% | high |
| April Weather | 10°C (49°F) | 120 mm (4.7 inches) | 83% | very high |
| May Weather | 15°C (60°F) | 144 mm (5.7 inches) | 75% | very high |
| June Weather | 20°C (69°F) | 106 mm (4.2 inches) | 73% | very high |
| July Weather | 24°C (75°F) | 139 mm (5.5 inches) | 65% | very high |
| August Weather | 22°C (72°F) | 146 mm (5.7 inches) | 62% | very high |
| September Weather | 19°C (66°F) | 120 mm (4.7 inches) | 66% | very high |
| October Weather | 13°C (56°F) | 143 mm (5.6 inches) | 79% | high |
| November Weather | 5°C (42°F) | 95 mm (3.7 inches) | 87% | moderate |
| December Weather | 1°C (34°F) | 112 mm (4.4 inches) | 85% | low |