Last updated: June 24, 2025
In New Haven, United States, the average temperature in March hovers around 5°C (41°F). While you might experience a chilling minimum of -13°C (9°F), the temperatures can peak at a surprisingly warm 25°C (77°F). During this month, precipitation is expected to total 102 mm (4.0 in) over 12 days, contributing to an average humidity of 86%. Stay prepared for both chilly and warm days as you navigate the varied climate!
In March in New Haven, the average temperature is 5°C (41°F). The maximum can reach 25°C (77°F), while the minimum can drop to as low as -13°C (9°F). This range of temperatures makes New Haven an interesting destination for travelers seeking a mix of cool and mild weather.
In New Haven in March, the total precipitation amount is 102 mm (4.0 in), occurring over a span of 12 days.
In New Haven in March humidity is 86%. With an average temperature of 5°C (41°F), this humidity feels like a heavy, damp blanket wrapping around you, making outdoor activities uncomfortable and travel quite challenging due to the chill combined with the stickiness in the air.
In New Haven 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 New Haven, you can refer to this Hourly UV Index in New Haven.
UV Risk Categories
Weather in New Haven varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in New Haven, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 74 mm (2.9 inches) | 85% | moderate |
| February Weather | -1°C (31°F) | 80 mm (3.2 inches) | 85% | moderate |
| March Weather | 5°C (41°F) | 102 mm (4.0 inches) | 86% | high |
| April Weather | 10°C (50°F) | 92 mm (3.6 inches) | 87% | very high |
| May Weather | 17°C (63°F) | 127 mm (5.0 inches) | 81% | very high |
| June Weather | 22°C (72°F) | 121 mm (4.8 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 104 mm (4.1 inches) | 81% | very high |
| August Weather | 23°C (74°F) | 96 mm (3.8 inches) | 79% | very high |
| September Weather | 20°C (68°F) | 65 mm (2.5 inches) | 78% | very high |
| October Weather | 14°C (57°F) | 101 mm (4.0 inches) | 81% | high |
| November Weather | 5°C (41°F) | 82 mm (3.2 inches) | 89% | moderate |
| December Weather | 1°C (35°F) | 61 mm (2.4 inches) | 86% | low |