Last updated: June 24, 2025
In Prospect Heights, United States, the average temperature in March hovers at a brisk 4°C (39°F). Expect a range that can dip as low as -20°C (-3°F) and soar to a warm 26°C (79°F). This month, you'll encounter about 79 mm (3.1 in) of precipitation spread over 10 days, contributing to an average humidity of 84%. Be prepared for a blend of chilly days and wet weather!
In March in Prospect Heights, the average temperature is 4°C (39°F). Maximum temperatures can reach 26°C (79°F), while minimum temperatures can drop as low as -20°C (-3°F). Be prepared for a wide range of temperatures if you're planning to travel during this time.
In Prospect Heights in March, the precipitation amount is 79 mm (3.1 in) over a span of 10 days.
In Prospect Heights in March, humidity is 84%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making outdoor excursions uncomfortable and demanding more layers than you anticipate while traveling.
In Prospect Heights in March, 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 Prospect Heights, you can refer to this Hourly UV Index in Prospect Heights.
UV Risk Categories
Weather in Prospect Heights varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Prospect 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 |