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June Weather in Eureka, United States

Last updated: June 24, 2025

In June, the average temperature in Eureka, United States hovers around 24°C (76°F), making it a pleasant time to visit. However, be prepared for a temperature range where it can dip to a cool 12°C (54°F) and soar up to a sweltering 37°C (99°F). During this month, expect approximately 88 mm (3.5 in) of precipitation over 12 days, contributing to an average humidity of 83%, adding to the tropical ambiance.

June Temperature in Eureka

In June, in Eureka, the average temperature is 24°C (76°F). Maximums can reach 37°C (99°F), and minimums can be as low as 12°C (54°F). This makes Eureka an ideal destination for travelers seeking pleasant weather and a variety of outdoor activities.

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

The chart illustrates June 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, June typically has an average temperature of 24°C (76°F), with highs reaching up to 37°C (99°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec333647556676797672594539
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.

June Precipitation in Eureka

In Eureka in June, the precipitation amount is 88 mm (3.5 in) over a span of 12 days.

June Precipitation Trends in Eureka

The chart displays monthly precipitation patterns in Eureka, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Eureka, June typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec75811291241448895139561107057
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Eureka

In Eureka in June, humidity is 83%. With an average temperature of 24°C (76°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and possibly causing travelers to sweat more quickly, prompting frequent breaks in shaded areas or the search for refreshing beverages.

June Average Humidity in Eureka

This chart illustrates the average monthly humidity levels in Eureka, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Eureka is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Eureka

In Eureka in June, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Eureka.

Maximum UV Index Levels in Eureka for June

The chart shows the monthly maximum UV Index (UVI) for Eureka in June, 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 June, the maximum UV index in Eureka typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101110109753
Data source: Eureka June 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 June 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 June’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 June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)75 mm (3.0 inches)82%moderate
February Weather2°C (36°F)81 mm (3.2 inches)80%moderate
March Weather8°C (47°F)129 mm (5.1 inches)80%high
April Weather13°C (55°F)124 mm (4.9 inches)80%very high
May Weather19°C (67°F)144 mm (5.7 inches)82%very high
June Weather24°C (76°F)88 mm (3.5 inches)83%extreme
July Weather26°C (80°F)95 mm (3.7 inches)81%very high
August Weather24°C (76°F)139 mm (5.5 inches)80%very high
September Weather22°C (72°F)56 mm (2.2 inches)76%very high
October Weather15°C (59°F)110 mm (4.3 inches)76%high
November Weather7°C (45°F)70 mm (2.8 inches)85%moderate
December Weather4°C (40°F)57 mm (2.2 inches)86%moderate

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