March Weather in Eureka, United States

Last updated: June 24, 2025

In March, the average temperature in Eureka, United States hovers around 9°C (49°F). However, temperatures can swing dramatically, with a minimum of -15°C (6°F) and a peak reaching 32°C (90°F). Expect about 84 mm (3.3 in) of precipitation over 9 days, and a comfortable average humidity of 71%.

March Temperature in Eureka

In March in Eureka, the average temperature is 9°C (49°F). The maximum can reach 32°C (90°F), and the minimum can be as low as -15°C (6°F). This variety in temperatures makes Eureka an intriguing destination for travelers looking to experience both mild and extreme weather conditions.

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 9°C (49°F), with highs reaching up to 32°C (90°F) and lows dropping to around -15°C (6°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 84 mm (3.3 in) spread over 9 days.

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 84 mm (3.3 inches) of precipitation spread over approximately 9 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 Eureka

In Eureka in March, humidity is 71%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that seeps into your bones, making it essential to dress warmly and plan for cozy indoor activities while exploring the area.

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 71%, 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 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the 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 7, 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	1°C (34°F)	50 mm (2.0 inches)	77%	moderate
February Weather	2°C (35°F)	40 mm (1.6 inches)	76%	high
March Weather	9°C (49°F)	84 mm (3.3 inches)	71%	high
April Weather	13°C (56°F)	100 mm (3.9 inches)	73%	very high
May Weather	19°C (66°F)	203 mm (8.0 inches)	83%	very high
June Weather	25°C (77°F)	114 mm (4.5 inches)	83%	extreme
July Weather	26°C (80°F)	93 mm (3.7 inches)	81%	extreme
August Weather	25°C (78°F)	112 mm (4.4 inches)	73%	very high
September Weather	23°C (73°F)	77 mm (3.0 inches)	67%	very high
October Weather	14°C (58°F)	143 mm (5.6 inches)	72%	high
November Weather	8°C (46°F)	28 mm (1.1 inches)	82%	moderate
December Weather	4°C (40°F)	31 mm (1.2 inches)	85%	moderate