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June Weather in California, United States

Last updated: June 24, 2025

In June, the average temperature in California, United States hovers around 25°C (77°F). However, be prepared for a temperature range that can dip to a chilly 12°C (54°F) and soar up to a scorching 38°C (100°F). During this month, expect 113 mm (4.4 in) of precipitation spread over 11 days. With an average humidity of 83%, it's advisable to stay hydrated and enjoy the warmth!

June Temperature in California

In June in California, the average temperature is 25°C (77°F). Maximums can reach 38°C (100°F), while minimums can drop as low as 12°C (54°F). This makes California a great destination for travelers seeking warm weather while still being prepared for cooler evenings.

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

The chart illustrates June temperature patterns in California, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In California, June typically has an average temperature of 25°C (77°F), with highs reaching up to 38°C (100°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec323547546676807672584539
Data source: Temperature data for California 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 California

In California in June, the precipitation amount is 113 mm (4.4 in) over the course of 11 days.

June Precipitation Trends in California

The chart displays monthly precipitation patterns in California, 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 California, June typically receives around 113 mm (4.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec6860114124176113115106611075638
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in California

In California in June humidity is 83%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket, making it essential for travelers to stay hydrated and seek shade to enjoy their adventures comfortably.

June Average Humidity in California

This chart illustrates the average monthly humidity levels in California, 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 California is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%75%77%82%83%81%78%72%72%84%86%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in California

In California 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 California.

Maximum UV Index Levels in California for June

The chart shows the monthly maximum UV Index (UVI) for California 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 California typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109743
Data source: California 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 California Compares to Other Months

Weather in California varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in California, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in California, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)68 mm (2.7 inches)80%moderate
February Weather1°C (35°F)60 mm (2.4 inches)78%moderate
March Weather8°C (47°F)114 mm (4.5 inches)75%high
April Weather12°C (55°F)124 mm (4.9 inches)77%very high
May Weather19°C (67°F)175 mm (6.9 inches)82%very high
June Weather25°C (77°F)113 mm (4.4 inches)83%extreme
July Weather26°C (80°F)115 mm (4.5 inches)81%extreme
August Weather25°C (77°F)106 mm (4.2 inches)78%very high
September Weather22°C (73°F)61 mm (2.4 inches)72%very high
October Weather14°C (58°F)107 mm (4.2 inches)72%high
November Weather7°C (45°F)56 mm (2.2 inches)84%moderate
December Weather4°C (39°F)38 mm (1.5 inches)86%moderate

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