March Weather in Walnut, United States

Last updated: August 27, 2025

In Walnut, United States, the average temperature in March hovers around 13°C (55°F), with fluctuations that can dip as low as -6°C (22°F) or soar up to 29°C (85°F). This month typically brings about 157 mm (6.2 in) of precipitation spread over 14 days, contributing to a high average humidity of 84%.

March Temperature in Walnut

In March in Walnut, the average temperature is 13°C (55°F). Maximums can reach 29°C (85°F), while minimums can drop as low as -6°C (22°F). This makes Walnut a destination where you should pack for both warm and cool weather to fully enjoy your travels.

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

The chart illustrates March temperature patterns in Walnut, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Walnut, March typically has an average temperature of 13°C (55°F), with highs reaching up to 29°C (85°F) and lows dropping to around -6°C (22°F).

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

March Precipitation in Walnut

In Walnut in March, the precipitation amount is 157 mm (6.2 in) spread over a duration of 14 days.

March Precipitation Trends in Walnut

The chart displays monthly precipitation patterns in Walnut, 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 Walnut, March typically receives around 157 mm (6.2 inches) of precipitation spread over approximately 14 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 Walnut

In Walnut in March humidity is 84%. With average temperature 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and draining for traveling.

March Average Humidity in Walnut

This chart illustrates the average monthly humidity levels in Walnut, 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 Walnut is approximately 84%, 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 Walnut

In Walnut in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Walnut.

Maximum UV Index Levels in Walnut for March

The chart shows the monthly maximum UV Index (UVI) for Walnut 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 Walnut typically reaches 8, which falls under the very high exposure category.

Data source: Walnut 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 Walnut Compares to Other Months

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

This table compares monthly weather conditions in Walnut, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	107 mm (4.2 inches)	86%	moderate
February Weather	8°C (47°F)	176 mm (6.9 inches)	85%	high
March Weather	13°C (55°F)	157 mm (6.2 inches)	84%	very high
April Weather	16°C (61°F)	148 mm (5.8 inches)	81%	very high
May Weather	22°C (71°F)	109 mm (4.3 inches)	83%	extreme
June Weather	26°C (78°F)	112 mm (4.4 inches)	83%	extreme
July Weather	27°C (81°F)	131 mm (5.2 inches)	80%	extreme
August Weather	26°C (79°F)	116 mm (4.6 inches)	73%	very high
September Weather	24°C (76°F)	122 mm (4.8 inches)	70%	very high
October Weather	18°C (65°F)	113 mm (4.4 inches)	73%	high
November Weather	10°C (50°F)	79 mm (3.1 inches)	85%	moderate
December Weather	8°C (47°F)	147 mm (5.8 inches)	88%	moderate