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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 13°C (56°F). Expect a range from a chilly -1°C (31°F) to a sweltering 36°C (97°F). During this month, you can anticipate around 68 mm (2.7 in) of precipitation over approximately 12 days, contributing to an average humidity level of 80%.

June Temperature in Eureka

In June, in Eureka, the average temperature is 13°C (56°F). Maximum temperatures can reach 36°C (97°F), while minimums can drop as low as -1°C (31°F). This variation makes Eureka suitable for travelers seeking both warm and cool experiences throughout the month.

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 13°C (56°F), with highs reaching up to 36°C (97°F) and lows dropping to around -1°C (31°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.

June Precipitation in Eureka

In Eureka in June, the precipitation amount is 68 mm (2.7 in) over the course 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 68 mm (2.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec517058666468243038706976
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 80%. With average temperature 13°C (56°F) this humidity feels like a damp chill that seeps into your bones, making outdoor exploration more challenging and necessitating layered clothing for comfort.

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 80%, 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 June generated using information from the Copernicus Climate Change Service.

June UV Index in Eureka

In Eureka in June, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789997421
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 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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