March Weather in Eureka, United States

Last updated: June 24, 2025

In March, the average temperature in Eureka, United States hovers around 5°C (42°F), with a notable minimum of -19°C (-1°F) and a comfortable maximum reaching 26°C (78°F). Expect about 106 mm (4.2 in) of precipitation spread over 12 days, contributing to an average humidity of 84%. Stay prepared for a mix of chilly days and refreshing rains!

March Temperature in Eureka

In March in Eureka, the average temperature is 5°C (42°F), with maximums reaching 26°C (78°F) and minimums dropping as low as -19°C (-1°F). Be prepared for a wide range of temperatures if you plan to travel 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 5°C (42°F), with highs reaching up to 26°C (78°F) and lows dropping to around -19°C (-1°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 106 mm (4.2 in), occurring over a span of 12 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 106 mm (4.2 inches) of precipitation spread over approximately 12 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 84%. With an average temperature of 5°C (42°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier while 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 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 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	-3°C (27°F)	61 mm (2.4 inches)	82%	moderate
February Weather	-2°C (29°F)	68 mm (2.7 inches)	83%	moderate
March Weather	5°C (42°F)	106 mm (4.2 inches)	84%	high
April Weather	10°C (51°F)	117 mm (4.6 inches)	85%	very high
May Weather	18°C (64°F)	165 mm (6.5 inches)	79%	very high
June Weather	23°C (74°F)	138 mm (5.4 inches)	82%	extreme
July Weather	25°C (77°F)	109 mm (4.3 inches)	80%	very high
August Weather	23°C (74°F)	80 mm (3.1 inches)	81%	very high
September Weather	21°C (70°F)	69 mm (2.7 inches)	80%	very high
October Weather	13°C (56°F)	130 mm (5.1 inches)	82%	high
November Weather	4°C (40°F)	56 mm (2.2 inches)	88%	moderate
December Weather	1°C (34°F)	55 mm (2.2 inches)	84%	low