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July Weather in Hayward, United States

Last updated: June 24, 2025

In July, the average temperature in Hayward, United States is a pleasant 22°C (71°F). You can expect a minimum of 8°C (46°F) and a maximum of 35°C (94°F), making for warm days and cooler nights. Be prepared for some wet weather, as 100 mm (3.9 in) of precipitation can occur over 10 days. With an average humidity of 80%, it’s best to stay hydrated and enjoy the beautiful surroundings!

July Temperature in Hayward

In July in Hayward, the average temperature is 22°C (71°F). Maximums can reach 35°C (94°F), while minimums can drop as low as 8°C (46°F). This makes it an ideal time for travelers seeking warm days and cool evenings.

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

The chart illustrates July 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, July typically has an average temperature of 22°C (71°F), with highs reaching up to 35°C (94°F) and lows dropping to around 8°C (46°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.

July Precipitation in Hayward

In Hayward in July, the precipitation amount is 100 mm (3.9 in) over a span of 10 days.

July Precipitation Trends in Hayward

The chart displays monthly precipitation patterns in Hayward, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Hayward, July typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec2640498810494100113104944661
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Hayward

In Hayward in July, humidity is 80%. With an average temperature of 22°C (71°F), this humidity feels like a warm, enveloping blanket, making travel slightly uncomfortable as skin becomes clammy and sweat clings to clothes.

July Average Humidity in Hayward

This chart illustrates the average monthly humidity levels in Hayward, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, 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 July generated using information from the Copernicus Climate Change Service.

July UV Index in Hayward

In Hayward in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Hayward.

Maximum UV Index Levels in Hayward for July

The chart shows the monthly maximum UV Index (UVI) for Hayward in July, 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 July, the maximum UV index in Hayward typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
Data source: Hayward July 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 July 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 July’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 July’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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