Last updated: June 24, 2025
In March, the average temperature in Grafton, United States hovers around 0°C (32°F), offering a crisp chill in the air. Temperatures can dip as low as -20°C (-3°F) or climb to a pleasant 21°C (70°F), showcasing the region's versatility. Expect 75 mm (2.9 in) of precipitation spread over 9 days, adding a touch of moisture to the atmosphere. With an average humidity of 82%, you might feel that characteristic dampness typical of the season.
In March in Grafton, the average temperature is 0°C (32°F) with a maximum reaching 21°C (70°F) and a minimum dropping as low as -20°C (-3°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack accordingly for both chilly and mild conditions.
In Grafton, in March, the precipitation amount is 75 mm (2.9 in) spread over the course of 9 days.
In Grafton in March, humidity is 82%. With an average temperature of 0°C (32°F), this humidity feels like an icy breath enveloping you, making each step outdoors a challenge as the cold dampness seeps into your clothes, chilling you to the bone and sapping your energy while traveling.
In Grafton in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Grafton.
UV Risk Categories
Weather in Grafton varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Grafton, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 70 mm (2.8 inches) | 86% | moderate |
| February Weather | -4°C (25°F) | 82 mm (3.2 inches) | 84% | moderate |
| March Weather | 0°C (32°F) | 75 mm (2.9 inches) | 82% | moderate |
| April Weather | 6°C (44°F) | 121 mm (4.8 inches) | 80% | very high |
| May Weather | 13°C (56°F) | 83 mm (3.3 inches) | 72% | very high |
| June Weather | 19°C (66°F) | 91 mm (3.6 inches) | 72% | very high |
| July Weather | 22°C (71°F) | 125 mm (4.9 inches) | 67% | very high |
| August Weather | 21°C (69°F) | 89 mm (3.5 inches) | 66% | very high |
| September Weather | 17°C (62°F) | 65 mm (2.6 inches) | 71% | high |
| October Weather | 10°C (50°F) | 129 mm (5.1 inches) | 78% | moderate |
| November Weather | 2°C (36°F) | 106 mm (4.2 inches) | 84% | moderate |
| December Weather | -3°C (26°F) | 109 mm (4.3 inches) | 81% | low |