March Weather in Grafton, United States

Last updated: June 24, 2025

In March, the average temperature in Grafton, United States hovers around 4°C (40°F). You can expect minimums to dip to a brisk -13°C (9°F), while maximums can reach a surprisingly warm 24°C (75°F). This month also sees about 92 mm (3.6 in) of precipitation spread across 13 days, contributing to a high average humidity of 87%. Prepare for a month of diverse weather!

March Temperature in Grafton

In March in Grafton, the average temperature is 4°C (40°F). Maximums can reach 24°C (75°F), while minimums can drop as low as -13°C (9°F). Be prepared for a wide range of temperatures during your travels, and pack accordingly!

March Weather in Grafton: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Grafton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grafton, March typically has an average temperature of 4°C (40°F), with highs reaching up to 24°C (75°F) and lows dropping to around -13°C (9°F).

Data source: Temperature data for Grafton generated using information from the Copernicus Climate Change Service.

March Precipitation in Grafton

In Grafton in March, the precipitation amount is 92 mm (3.6 in) spread over 13 days.

March Precipitation Trends in Grafton

The chart displays monthly precipitation patterns in Grafton, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Grafton, March typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

March Humidity in Grafton

In Grafton in March humidity is 87%. With an average temperature of 4°C (40°F), this humidity feels like an uncomfortable chill that seeps into your bones, making it essential to dress warmly and prepare for damp conditions, which can dampen your spirits while traveling.

March Average Humidity in Grafton

This chart illustrates the average monthly humidity levels in Grafton, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Grafton is approximately 87%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Grafton

In Grafton 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 Grafton, you can refer to this Hourly UV Index in Grafton.

Maximum UV Index Levels in Grafton for March

The chart shows the monthly maximum UV Index (UVI) for Grafton in March, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In March, the maximum UV index in Grafton typically reaches 6, which falls under the high exposure category.

Data source: Grafton March UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How March Weather in Grafton Compares to Other Months

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.

This table compares monthly weather conditions in Grafton, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	80 mm (3.1 inches)	88%	moderate
February Weather	0°C (32°F)	90 mm (3.5 inches)	88%	moderate
March Weather	4°C (40°F)	92 mm (3.6 inches)	87%	high
April Weather	10°C (50°F)	120 mm (4.7 inches)	87%	very high
May Weather	16°C (62°F)	123 mm (4.9 inches)	81%	very high
June Weather	21°C (71°F)	135 mm (5.3 inches)	83%	very high
July Weather	24°C (75°F)	130 mm (5.1 inches)	82%	very high
August Weather	22°C (73°F)	97 mm (3.8 inches)	76%	very high
September Weather	20°C (68°F)	85 mm (3.4 inches)	77%	very high
October Weather	14°C (57°F)	102 mm (4.0 inches)	82%	high
November Weather	5°C (42°F)	90 mm (3.6 inches)	89%	moderate
December Weather	2°C (35°F)	88 mm (3.5 inches)	86%	low