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June Weather in Walnut Creek, United States

Last updated: June 24, 2025

In Walnut Creek, United States, the average temperature in June reaches a comfortable 30°C (86°F). However, be prepared for a temperature range that can drop to a chilly 13°C (56°F) and soar as high as a blistering 44°C (112°F). With an average humidity of only 31%, the air remains fairly dry, and you can typically expect minimal precipitation of just 1 mm (0.1 in) over the course of 0 days.

June Temperature in Walnut Creek

In June in Walnut Creek, the average temperature is 30°C (86°F). Maximum temperatures can reach as high as 44°C (112°F), while minimum temperatures can drop to as low as 13°C (56°F). It's advisable to pack for both warm days and cooler evenings while exploring the diverse climate of Walnut Creek.

June Weather in Walnut Creek: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Walnut Creek, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Walnut Creek, June typically has an average temperature of 30°C (86°F), with highs reaching up to 44°C (112°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec474956667385898981675747
Data source: Temperature data for Walnut Creek 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 Walnut Creek

In Walnut Creek in June, the precipitation amount is 1 mm (0.1 in) during 0 days, indicating a very dry period.

June Precipitation Trends in Walnut Creek

The chart displays monthly precipitation patterns in Walnut Creek, 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 Walnut Creek, June typically receives around 1 mm (0.1 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec282936872331415202621
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Walnut Creek

In Walnut Creek in June, humidity is 31%. With an average temperature of 30°C (86°F), this humidity feels like a warm embrace, making every moment spent outdoors energizing yet comfortable for traveling.

June Average Humidity in Walnut Creek

This chart illustrates the average monthly humidity levels in Walnut Creek, 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 Walnut Creek is approximately 31%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%80%68%58%45%31%27%30%48%60%70%77%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Walnut Creek

In Walnut Creek in June, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Walnut Creek.

Maximum UV Index Levels in Walnut Creek for June

The chart shows the monthly maximum UV Index (UVI) for Walnut Creek 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 Walnut Creek typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101112121110754
Data source: Walnut Creek 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 Walnut Creek Compares to Other Months

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

This table compares monthly weather conditions in Walnut Creek, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)28 mm (1.1 inches)77%moderate
February Weather10°C (49°F)29 mm (1.1 inches)80%high
March Weather13°C (56°F)36 mm (1.4 inches)68%very high
April Weather19°C (67°F)8 mm (0.3 inches)58%very high
May Weather23°C (74°F)7 mm (0.3 inches)45%extreme
June Weather30°C (86°F)1 mm (0.1 inches)31%extreme
July Weather32°C (89°F)32 mm (1.3 inches)27%extreme
August Weather32°C (89°F)14 mm (0.6 inches)30%extreme
September Weather27°C (81°F)15 mm (0.6 inches)48%very high
October Weather19°C (67°F)20 mm (0.8 inches)59%high
November Weather14°C (57°F)26 mm (1.0 inches)70%moderate
December Weather8°C (47°F)21 mm (0.8 inches)77%moderate

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