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June Weather in Hayward, United States

Last updated: June 24, 2025

In June, the average temperature in Hayward, United States is a comfortable 19°C (67°F). While daytime highs can reach up to 34°C (94°F), evenings can cool down to a minimum of 6°C (43°F). Expect a total precipitation of 94 mm (3.7 in) distributed over 12 rainy days, contributing to an average humidity of 80%. Prepare for a month of warm days and refreshing showers!

June Temperature in Hayward

In June in Hayward, the average temperature is 19°C (67°F). Maximums can reach up to 34°C (94°F), while minimums can drop as low as 6°C (43°F). This makes it a great time for travelers to experience mild weather with warm afternoons and cooler evenings.

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 (67°F), with highs reaching up to 34°C (94°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec141429405667716761463021
Data source: Temperature data for Hayward 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 Hayward

In Hayward in June, the precipitation amount is 94 mm (3.7 in) spread over 12 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 94 mm (3.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec2640498810494100113104944661
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Hayward

In Hayward in June humidity is 80%. With an average temperature of 19°C (67°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor exploration a bit uncomfortable and sticky, yet it encourages you to seek out refreshing indoor activities or shaded spots to escape the heat.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%86%85%79%80%80%78%80%84%89%85%
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 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
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.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (14°F)26 mm (1.0 inches)88%low
February Weather-10°C (15°F)40 mm (1.6 inches)89%moderate
March Weather-2°C (29°F)49 mm (1.9 inches)86%moderate
April Weather4°C (40°F)88 mm (3.5 inches)85%high
May Weather13°C (56°F)104 mm (4.1 inches)79%very high
June Weather19°C (67°F)94 mm (3.7 inches)80%very high
July Weather22°C (71°F)100 mm (3.9 inches)80%very high
August Weather20°C (68°F)113 mm (4.5 inches)78%very high
September Weather16°C (61°F)104 mm (4.1 inches)80%high
October Weather8°C (46°F)94 mm (3.7 inches)84%moderate
November Weather-1°C (31°F)46 mm (1.8 inches)89%moderate
December Weather-6°C (21°F)61 mm (2.4 inches)85%low

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