March Weather in Eureka, United States

Last updated: June 24, 2025

In March, the average temperature in Eureka, United States hovers around -1°C (30°F). However, don't be surprised by the extremes, as temperatures can dip to a chilling -28°C (-18°F) or peak at a surprising 22°C (73°F). During this month, you can expect 29 mm (1.1 in) of precipitation spread over 5 days, with an average humidity of 76%. Stay prepared for a mix of weather!

March Temperature in Eureka

In March in Eureka, the average temperature is -1°C (30°F), with maximums reaching 22°C (73°F) and minimums dropping as low as -28°C (-18°F). This wide temperature range means travelers should be prepared for both chilly and potentially pleasantly warm days.

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 -1°C (30°F), with highs reaching up to 22°C (73°F) and lows dropping to around -28°C (-18°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 total precipitation amount is 29 mm (1.1 in) recorded over a span of 5 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 29 mm (1.1 inches) of precipitation spread over approximately 5 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 76%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that penetrates your layers, making outdoor activities less enjoyable and prompting travelers to seek warmth and shelter more often than not.

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 76%, 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 reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, 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 5, which falls under the moderate 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	-10°C (15°F)	14 mm (0.6 inches)	81%	low
February Weather	-11°C (13°F)	17 mm (0.7 inches)	85%	moderate
March Weather	-1°C (30°F)	29 mm (1.1 inches)	76%	moderate
April Weather	4°C (40°F)	43 mm (1.7 inches)	79%	high
May Weather	13°C (56°F)	57 mm (2.2 inches)	76%	very high
June Weather	21°C (70°F)	59 mm (2.3 inches)	81%	very high
July Weather	23°C (74°F)	63 mm (2.5 inches)	82%	very high
August Weather	21°C (70°F)	102 mm (4.0 inches)	82%	very high
September Weather	16°C (62°F)	69 mm (2.7 inches)	77%	very high
October Weather	7°C (44°F)	63 mm (2.5 inches)	76%	moderate
November Weather	0°C (32°F)	14 mm (0.5 inches)	84%	moderate
December Weather	-6°C (22°F)	27 mm (1.1 inches)	81%	low