June Weather in Hayward, United States

Last updated: June 24, 2025

In June, the average temperature in Hayward, United States is a pleasant 19°C (66°F). You'll experience minimums as cool as 8°C (47°F) and can reach maximums soaring to 38°C (101°F). With a meager precipitation of only 2 mm (0.1 in) over 0 days, the weather remains typically dry and comfortable. Enjoy the mild climate with an average humidity of 64%!

June Temperature in Hayward

In June in Hayward, the average temperature is 19°C (66°F). The maximum can reach 38°C (101°F), while the minimum can dip as low as 8°C (47°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack accordingly for both warm days and cool nights.

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

The chart illustrates June temperature patterns in Hayward, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hayward, June typically has an average temperature of 19°C (66°F), with highs reaching up to 38°C (101°F) and lows dropping to around 8°C (47°F).

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

June Precipitation in Hayward

In Hayward in June, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

June Precipitation Trends in Hayward

The chart displays monthly precipitation patterns in Hayward, 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 Hayward, June typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 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 Hayward

In Hayward in June humidity is 64%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, making travel both refreshing and slightly drizzly, ideal for leisurely exploration but a reminder to stay hydrated.

June Average Humidity in Hayward

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

In Hayward 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 Hayward.

Maximum UV Index Levels in Hayward for June

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

Data source: Hayward 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 Hayward Compares to Other Months

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

This table compares monthly weather conditions in Hayward, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	94 mm (3.7 inches)	82%	moderate
February Weather	11°C (52°F)	89 mm (3.5 inches)	84%	moderate
March Weather	12°C (54°F)	77 mm (3.0 inches)	82%	very high
April Weather	14°C (58°F)	30 mm (1.2 inches)	78%	very high
May Weather	16°C (61°F)	17 mm (0.7 inches)	71%	very high
June Weather	19°C (66°F)	2 mm (0.1 inches)	64%	extreme
July Weather	20°C (68°F)	0 mm (0.0 inches)	58%	extreme
August Weather	20°C (69°F)	0 mm (0.0 inches)	54%	very high
September Weather	20°C (68°F)	2 mm (0.1 inches)	55%	very high
October Weather	17°C (63°F)	22 mm (0.9 inches)	62%	high
November Weather	13°C (55°F)	38 mm (1.5 inches)	78%	moderate
December Weather	10°C (50°F)	76 mm (3.0 inches)	80%	moderate