June Weather in Walnut, United States

Last updated: June 24, 2025

In June, the average temperature in Walnut, United States is a pleasant 24°C (75°F). However, temperatures can range from a cool 9°C (48°F) to a sizzling 39°C (102°F). During this month, you can expect 109 mm (4.3 in) of precipitation spread over about 10 days, contributing to an average humidity of 82%. Be prepared for a mix of warm days and refreshing showers!

June Temperature in Walnut

In June in Walnut, the average temperature is 24°C (75°F). Maximums can reach 39°C (102°F), and minimums can be as low as 9°C (48°F). Be sure to pack both light clothing for the warm days and warmer layers for the cooler nights while traveling.

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

The chart illustrates June temperature patterns in Walnut, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Walnut, June typically has an average temperature of 24°C (75°F), with highs reaching up to 39°C (102°F) and lows dropping to around 9°C (48°F).

Data source: Temperature data for Walnut generated using information from the Copernicus Climate Change Service.

June Precipitation in Walnut

In Walnut in June, the precipitation amount is 109 mm (4.3 in) spread over 10 days.

June Precipitation Trends in Walnut

The chart displays monthly precipitation patterns in Walnut, 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, June typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

June Humidity in Walnut

In Walnut in June, humidity is 82%. With an average temperature of 24°C (75°F), this humidity feels like a warm embrace, making travel feel sticky and heavy on the skin, often requiring more frequent breaks and hydration.

June Average Humidity in Walnut

This chart illustrates the average monthly humidity levels in Walnut, 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 is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Walnut

In Walnut 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 Walnut.

Maximum UV Index Levels in Walnut for June

The chart shows the monthly maximum UV Index (UVI) for Walnut 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 typically reaches 11, which falls under the extreme exposure category.

Data source: Walnut 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 Compares to Other Months

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

This table compares monthly weather conditions in Walnut, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	30 mm (1.2 inches)	76%	moderate
February Weather	-4°C (24°F)	36 mm (1.4 inches)	80%	moderate
March Weather	4°C (40°F)	86 mm (3.4 inches)	73%	high
April Weather	9°C (49°F)	57 mm (2.3 inches)	74%	very high
May Weather	17°C (62°F)	157 mm (6.2 inches)	78%	very high
June Weather	24°C (75°F)	109 mm (4.3 inches)	82%	extreme
July Weather	25°C (77°F)	68 mm (2.7 inches)	83%	very high
August Weather	23°C (74°F)	108 mm (4.3 inches)	80%	very high
September Weather	20°C (69°F)	98 mm (3.8 inches)	75%	very high
October Weather	11°C (52°F)	128 mm (5.0 inches)	75%	high
November Weather	4°C (39°F)	34 mm (1.3 inches)	82%	moderate
December Weather	-1°C (31°F)	36 mm (1.4 inches)	83%	moderate