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March Weather in Eureka, United States

Last updated: June 24, 2025

In March, the average temperature in Eureka, United States hovers around -2°C (29°F), with a dramatic range between a chilling -32°C (-26°F) and a milder 15°C (60°F). Expect precipitation of approximately 58 mm (2.3 in) spread over 14 days, with an average humidity of a high 91%. Prepare for a month that brings both the cold and the damp!

March Temperature in Eureka

In March in Eureka, the average temperature is -2°C (29°F). The maximum can reach 15°C (60°F), while the minimum can drop as low as -32°C (-26°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both cold and mild weather.

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 -2°C (29°F), with highs reaching up to 15°C (60°F) and lows dropping to around -32°C (-26°F).
JanFebMarAprMayJunJulAugSepOctNovDec201629374856646353383023
Data source: Temperature data for Eureka generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Eureka

In Eureka in March, the precipitation amount is 58 mm (2.3 in) over the course of 14 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 58 mm (2.3 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec517058666468243038706976
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Eureka

In Eureka in March, humidity is 91%. With an average temperature of -2°C (29°F), this humidity feels like a chilling embrace that can quickly sap your energy, making outdoor adventures uncomfortable and dampening the joy of exploration.

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 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%93%91%88%83%80%82%71%71%85%90%96%
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.
JanFebMarAprMayJunJulAugSepOctNovDec235789997421
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.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)51 mm (2.0 inches)95%low
February Weather-9°C (16°F)70 mm (2.8 inches)93%moderate
March Weather-2°C (29°F)58 mm (2.3 inches)91%moderate
April Weather3°C (37°F)66 mm (2.6 inches)88%high
May Weather9°C (48°F)64 mm (2.5 inches)83%very high
June Weather13°C (56°F)68 mm (2.7 inches)80%very high
July Weather18°C (64°F)23 mm (0.9 inches)82%very high
August Weather17°C (63°F)29 mm (1.2 inches)71%very high
September Weather11°C (53°F)38 mm (1.5 inches)71%high
October Weather3°C (38°F)70 mm (2.7 inches)85%moderate
November Weather-1°C (31°F)69 mm (2.7 inches)90%low
December Weather-5°C (24°F)76 mm (3.0 inches)96%low

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