March Weather in Eureka, United States

Last updated: June 24, 2025

In Eureka, United States, the average temperature in March hovers around 8°C (47°F). However, be prepared for a temperature range where the minimum can drop to -16°C (3°F) and the maximum may reach 28°C (84°F). With precipitation totaling 129 mm (5.1 in) over approximately 11 days and an average humidity of 80%, this month promises a mix of chilly and damp conditions for visitors and locals alike.

March Temperature in Eureka

In March in Eureka, the average temperature is 8°C (47°F). Maximums can reach 28°C (84°F), while minimums can drop as low as -16°C (3°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates March temperature patterns in Eureka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Eureka, March typically has an average temperature of 8°C (47°F), with highs reaching up to 28°C (84°F) and lows dropping to around -16°C (3°F).

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

March Precipitation in Eureka

In Eureka in March, the precipitation amount is 129 mm (5.1 in) spread over 11 days, indicating a wet period for the area.

March Precipitation Trends in Eureka

The chart displays monthly precipitation patterns in Eureka, 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 Eureka, March typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 11 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 Eureka

In Eureka in March, humidity is 80%. With an average temperature of 8°C (47°F), this humidity feels like you're walking through a heavy mist, making your clothes cling to your skin and every step prone to a shiver, which can be quite uncomfortable for traveling.

March Average Humidity in Eureka

This chart illustrates the average monthly humidity levels in Eureka, 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 Eureka is approximately 80%, 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 Eureka

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

Maximum UV Index Levels in Eureka for March

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

Data source: Eureka 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 Eureka Compares to Other Months

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

This table compares monthly weather conditions in Eureka, 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)	75 mm (3.0 inches)	82%	moderate
February Weather	2°C (36°F)	81 mm (3.2 inches)	80%	moderate
March Weather	8°C (47°F)	129 mm (5.1 inches)	80%	high
April Weather	13°C (55°F)	124 mm (4.9 inches)	80%	very high
May Weather	19°C (67°F)	144 mm (5.7 inches)	82%	very high
June Weather	24°C (76°F)	88 mm (3.5 inches)	83%	extreme
July Weather	26°C (80°F)	95 mm (3.7 inches)	81%	very high
August Weather	24°C (76°F)	139 mm (5.5 inches)	80%	very high
September Weather	22°C (72°F)	56 mm (2.2 inches)	76%	very high
October Weather	15°C (59°F)	110 mm (4.3 inches)	76%	high
November Weather	7°C (45°F)	70 mm (2.8 inches)	85%	moderate
December Weather	4°C (40°F)	57 mm (2.2 inches)	86%	moderate