March Weather in Mendham, United States

Last updated: June 24, 2025

In March, the average temperature in Mendham, United States hovers around 5°C (41°F). During this time, temperatures can swing from a chilly -16°C (4°F) at their lowest to a pleasant 26°C (79°F) at their peak. Expect around 103 mm (4.1 in) of precipitation over 10 days, alongside an average humidity level of 81%, creating a moderately damp atmosphere.

March Temperature in Mendham

In March in Mendham, the average temperature is 5°C (41°F). Maximums can reach 26°C (79°F), while minimums can drop as low as -16°C (4°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your trip.

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

The chart illustrates March temperature patterns in Mendham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mendham, March typically has an average temperature of 5°C (41°F), with highs reaching up to 26°C (79°F) and lows dropping to around -16°C (4°F).

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

March Precipitation in Mendham

In Mendham in March, the precipitation amount is 103 mm (4.1 in) over a span of 10 days.

March Precipitation Trends in Mendham

The chart displays monthly precipitation patterns in Mendham, 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 Mendham, March typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Mendham

In Mendham in March, humidity is 81%. With an average temperature of 5°C (41°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor exploration uncomfortable and requiring warm, waterproof clothing to stay comfortable while traveling.

March Average Humidity in Mendham

This chart illustrates the average monthly humidity levels in Mendham, 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 Mendham is approximately 81%, 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 Mendham

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

Maximum UV Index Levels in Mendham for March

The chart shows the monthly maximum UV Index (UVI) for Mendham 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 Mendham typically reaches 6, which falls under the high exposure category.

Data source: Mendham 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 Mendham Compares to Other Months

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

This table compares monthly weather conditions in Mendham, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (33°F)	70 mm (2.7 inches)	84%	moderate
February Weather	2°C (36°F)	104 mm (4.1 inches)	82%	moderate
March Weather	5°C (41°F)	103 mm (4.1 inches)	81%	high
April Weather	11°C (52°F)	116 mm (4.6 inches)	78%	very high
May Weather	16°C (62°F)	135 mm (5.3 inches)	69%	very high
June Weather	21°C (71°F)	106 mm (4.2 inches)	69%	very high
July Weather	25°C (77°F)	142 mm (5.6 inches)	62%	very high
August Weather	24°C (75°F)	136 mm (5.4 inches)	65%	very high
September Weather	20°C (69°F)	101 mm (4.0 inches)	68%	very high
October Weather	15°C (59°F)	142 mm (5.6 inches)	74%	high
November Weather	7°C (44°F)	86 mm (3.4 inches)	82%	moderate
December Weather	3°C (37°F)	113 mm (4.4 inches)	80%	low