June Weather in Grass Valley, United States

Last updated: June 24, 2025

In Grass Valley, United States, the average temperature in June is a pleasant 22°C (72°F), making it an ideal time to explore. However, temperatures can vary significantly, with a minimum of 5°C (41°F) and a maximum soaring to 40°C (104°F). Expect light precipitation of around 13 mm (0.5 in) over the course of 2 days, and enjoy the average humidity level of 64% that adds to the region's charm.

June Temperature in Grass Valley

In June in Grass Valley, the average temperature is 22°C (72°F). Maximums can reach 40°C (104°F), and minimums can be as low as 5°C (41°F). Be prepared for a wide range of temperatures when traveling during this time.

June Weather in Grass Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Grass Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grass Valley, June typically has an average temperature of 22°C (72°F), with highs reaching up to 40°C (104°F) and lows dropping to around 5°C (41°F).

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

June Precipitation in Grass Valley

In Grass Valley in June, the precipitation amount is 13 mm (0.5 in) over a span of 2 days.

June Precipitation Trends in Grass Valley

The chart displays monthly precipitation patterns in Grass Valley, 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 Grass Valley, June typically receives around 13 mm (0.5 inches) of precipitation spread over approximately 2 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 Grass Valley

In Grass Valley in June humidity is 64%. With an average temperature of 22°C (72°F), this humidity feels like a warm, tropical embrace, making travel enjoyable yet slightly sticky, prompting visitors to seek shade or refreshing beverages while exploring the vibrant surroundings.

June Average Humidity in Grass Valley

This chart illustrates the average monthly humidity levels in Grass Valley, 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 Grass Valley is approximately 64%, 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 Grass Valley

In Grass Valley 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 Grass Valley.

Maximum UV Index Levels in Grass Valley for June

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

Data source: Grass Valley 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 Grass Valley Compares to Other Months

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

This table compares monthly weather conditions in Grass Valley, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	269 mm (10.6 inches)	84%	moderate
February Weather	8°C (46°F)	279 mm (11.0 inches)	84%	moderate
March Weather	9°C (48°F)	267 mm (10.5 inches)	83%	high
April Weather	13°C (55°F)	129 mm (5.1 inches)	81%	very high
May Weather	17°C (62°F)	76 mm (3.0 inches)	74%	very high
June Weather	22°C (72°F)	13 mm (0.5 inches)	64%	extreme
July Weather	26°C (79°F)	1 mm (0.0 inches)	44%	extreme
August Weather	25°C (77°F)	2 mm (0.1 inches)	36%	very high
September Weather	21°C (70°F)	23 mm (0.9 inches)	44%	very high
October Weather	15°C (60°F)	78 mm (3.1 inches)	65%	high
November Weather	10°C (51°F)	157 mm (6.2 inches)	84%	moderate
December Weather	7°C (44°F)	215 mm (8.4 inches)	83%	moderate