March Weather in Grafton, United States

Last updated: June 24, 2025

In March, the average temperature in Grafton, United States hovers around -4°C (25°F), with extremes dipping as low as -27°C (-17°F) and occasionally peaking at 21°C (71°F). During this time, the region can expect precipitation of about 22 mm (0.9 in) over the course of 4 days, while average humidity remains high at 88%.

March Temperature in Grafton

In March in Grafton, the average temperature is -4°C (25°F), with maximums reaching 21°C (71°F) and minimums dropping as low as -27°C (-17°F). Travelers should be prepared for a wide temperature range 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 (25°F), with highs reaching up to 21°C (71°F) and lows dropping to around -27°C (-17°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 22 mm (0.9 in) over a duration of 4 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 22 mm (0.9 inches) of precipitation spread over approximately 4 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 88%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that clings to your skin, making outdoor excursions brisk and invigorating, yet challenging as you navigate the frosty air.

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 88%, 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 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.

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 5, which falls under the moderate 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	-13°C (9°F)	17 mm (0.6 inches)	92%	low
February Weather	-14°C (7°F)	18 mm (0.7 inches)	90%	moderate
March Weather	-4°C (25°F)	22 mm (0.9 inches)	88%	moderate
April Weather	3°C (38°F)	27 mm (1.1 inches)	81%	high
May Weather	13°C (55°F)	48 mm (1.9 inches)	74%	very high
June Weather	20°C (68°F)	64 mm (2.5 inches)	72%	very high
July Weather	22°C (72°F)	54 mm (2.1 inches)	74%	very high
August Weather	20°C (68°F)	63 mm (2.5 inches)	76%	very high
September Weather	15°C (59°F)	82 mm (3.2 inches)	73%	high
October Weather	6°C (43°F)	79 mm (3.1 inches)	76%	moderate
November Weather	-3°C (26°F)	26 mm (1.0 inches)	86%	moderate
December Weather	-9°C (16°F)	30 mm (1.2 inches)	91%	low