June Weather in Portola, United States

Last updated: June 24, 2025

In June, the average temperature in Portola, United States is a pleasant 16°C (62°F), making it a delightful time to explore. However, temperatures can vary significantly, with a minimum of -4°C (26°F) and a maximum soaring to 33°C (92°F). Expect light precipitation, averaging 10 mm (0.4 in) over the course of 3 days, while humidity levels hover around 64%. This combination of factors creates a dynamic climate ideal for a range of activities!

June Temperature in Portola

In June in Portola, the average temperature is 16°C (62°F), with maximums reaching 33°C (92°F) and minimums dropping as low as -4°C (26°F). This wide temperature range means travelers should pack accordingly to enjoy both warm days and cooler evenings.

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

The chart illustrates June temperature patterns in Portola, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portola, June typically has an average temperature of 16°C (62°F), with highs reaching up to 33°C (92°F) and lows dropping to around -4°C (26°F).

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

June Precipitation in Portola

In Portola in June, the precipitation amount is 10 mm (0.4 in) over a period of 3 days.

June Precipitation Trends in Portola

The chart displays monthly precipitation patterns in Portola, 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 Portola, June typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 3 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

June Humidity in Portola

In Portola in June humidity is 64%. With an average temperature of 16°C (62°F), this humidity feels like a moderate blanket wrapping around you, making it pleasant for traveling but potentially a bit damp as you explore the sights.

June Average Humidity in Portola

This chart illustrates the average monthly humidity levels in Portola, 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 Portola 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 Portola

In Portola 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 Portola.

Maximum UV Index Levels in Portola for June

The chart shows the monthly maximum UV Index (UVI) for Portola 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 Portola typically reaches 12, which falls under the extreme exposure category.

Data source: Portola 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 Portola Compares to Other Months

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

This table compares monthly weather conditions in Portola, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	170 mm (6.7 inches)	84%	moderate
February Weather	-1°C (30°F)	177 mm (7.0 inches)	84%	high
March Weather	1°C (34°F)	146 mm (5.7 inches)	83%	very high
April Weather	5°C (41°F)	72 mm (2.8 inches)	81%	very high
May Weather	10°C (51°F)	60 mm (2.3 inches)	74%	extreme
June Weather	16°C (62°F)	10 mm (0.4 inches)	64%	extreme
July Weather	21°C (70°F)	10 mm (0.4 inches)	44%	extreme
August Weather	20°C (68°F)	13 mm (0.5 inches)	36%	extreme
September Weather	15°C (60°F)	19 mm (0.7 inches)	44%	very high
October Weather	8°C (47°F)	43 mm (1.7 inches)	65%	high
November Weather	3°C (38°F)	79 mm (3.1 inches)	84%	moderate
December Weather	-2°C (29°F)	132 mm (5.2 inches)	83%	moderate