March Weather in Maine, United States

Last updated: June 24, 2025

In March, the average temperature in Maine, United States hovers around -1°C (31°F), making it a chilly time of year. Expect minimum temperatures to dip as low as -26°C (-15°F), while the mercury can rise to a maximum of 17°C (63°F) on milder days. With 53 mm (2.1 in) of precipitation spread over 8 days, you might want to pack an umbrella. Moreover, the average humidity is a notable 87%, adding to the cold sensation in the air.

March Temperature in Maine

In March in Maine, the average temperature is -1°C (31°F), with maximums reaching up to 17°C (63°F) and minimums dropping as low as -26°C (-15°F). Travelers should be prepared for a wide range of temperatures during this time.

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

The chart illustrates March temperature patterns in Maine, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Maine, March typically has an average temperature of -1°C (31°F), with highs reaching up to 17°C (63°F) and lows dropping to around -26°C (-15°F).

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

March Precipitation in Maine

In Maine in March, the total precipitation amount is 53 mm (2.1 in) over the course of 8 days.

March Precipitation Trends in Maine

The chart displays monthly precipitation patterns in Maine, 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 Maine, March typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 8 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 Maine

In Maine in March humidity is 87%. With an average temperature of -1°C (31°F), this humidity feels like a biting chill that seeps through your clothes, making traveling incredibly uncomfortable as it adds a layer of dampness to the already cold air, leaving you shivering and wishing for warmth.

March Average Humidity in Maine

This chart illustrates the average monthly humidity levels in Maine, 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 Maine 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 Maine

In Maine 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 Maine.

Maximum UV Index Levels in Maine for March

The chart shows the monthly maximum UV Index (UVI) for Maine 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 Maine typically reaches 5, which falls under the moderate exposure category.

Data source: Maine 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 Maine Compares to Other Months

Weather in Maine varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Maine, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Maine, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (17°F)	34 mm (1.3 inches)	89%	low
February Weather	-8°C (17°F)	50 mm (2.0 inches)	90%	moderate
March Weather	-1°C (31°F)	53 mm (2.1 inches)	87%	moderate
April Weather	5°C (42°F)	98 mm (3.9 inches)	84%	high
May Weather	13°C (56°F)	103 mm (4.1 inches)	77%	very high
June Weather	19°C (67°F)	102 mm (4.0 inches)	75%	very high
July Weather	22°C (71°F)	117 mm (4.6 inches)	74%	very high
August Weather	19°C (67°F)	121 mm (4.8 inches)	73%	very high
September Weather	16°C (61°F)	83 mm (3.3 inches)	78%	high
October Weather	8°C (47°F)	109 mm (4.3 inches)	84%	moderate
November Weather	0°C (32°F)	50 mm (2.0 inches)	89%	moderate
December Weather	-5°C (23°F)	52 mm (2.1 inches)	87%	low