June weather forecast and climate
Hayward, CA

The landscape of the famed Verdant Hills in Hayward, California
The landscape of the famed Verdant Hills in Hayward, California

Weather in June

June, the first month of the summer, in Hayward, is a warm month, with average temperature fluctuating between 53.6°F (12°C) and 77°F (25°C).

Temperature

In June, the average high-temperature slightly increases, from an agreeable 70.3°F (21.3°C) in May, to a moderately hot 77°F (25°C). In Hayward, the average low-temperature is 53.6°F (12°C).

Humidity

In June, the average relative humidity is 63%.

Rainfall

In Hayward, California, it is raining for 1.6 days, with typically 0.12" (3mm) of accumulated precipitation. In Hayward, during the entire year, the rain falls for 69.2 days and collects up to 11.1" (282mm) of precipitation.

Daylight

June has the longest days of the year, with an average of 14.7h of daylight.

Sunshine

In June, the average sunshine in Hayward is 11.8h.

UV index

The month with the highest UV index is June, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In June, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in June in Hayward?

In June, the average high-temperature is 77°F (25°C), and the average low-temperature is 53.6°F (12°C).

What is the average humidity in June in Hayward?

The average relative humidity in June in Hayward is 63%.

How much does it rain in Hayward in June?

In June, the rain falls for 1.6 days. Throughout June, 0.12" (3mm) of precipitation is accumulated.

When are the longest days in Hayward?

June has the longest days of the year in Hayward, with an average of 14.7h of daylight.

How many hours of daylight does Hayward have in June?

The average length of the day in June is 14.7h.

How long on average sun shines in June in Hayward?

In Hayward, the average sunshine in June is 11.8h.

When is the highest UV index in Hayward?

With an average maximum UV index of 6, June is the month with the highest UV index in Hayward.

How high is the UV index in June in Hayward?

The average daily maximum UV index in June is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays.

Average temperature in June
Hayward, CA

Average temperature in June - Hayward, CA
  • Average high temperature in June: 77°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is December (55.9°F).

  • Average low temperature in June: 53.6°F

The month with the highest average low temperature is August (56.5°F).
The coldest months (with the lowest average low temperature) are January and December (43.7°F).

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Average pressure in June
Hayward, CA

Average pressure in June - Hayward, CA
  • Average pressure in June: 29.92"

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in June
Hayward, CA

Average wind speed in June - Hayward, CA
  • Average wind speed in June: 6.3mph

The windiest month (with the highest average wind speed) is May (6.6mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).

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Average humidity in June
Hayward, CA

Average humidity in June - Hayward, CA
  • Average humidity in June: 63%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (61%).

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Average rainfall in June
Hayward, CA

Average rainfall in June - Hayward, CA
  • Average rainfall in June: 0.12"

The wettest month (with the highest rainfall) is February (2.28").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in June
Hayward, CA

Average rainfall days in June - Hayward, CA
  • Average rainfall days in June: 1.6 days

The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is August (0.9 days).

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Average daylight in June /
Average sunshine in June
Hayward, CA

Average daylight in June / Average sunshine in June - Hayward, CA
  • Average daylight in June: 14.7h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in June: 11.8h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days in June
Hayward, CA

Average sunshine days in June - Hayward, CA
  • Average sunshine days in June: 27.3 days

The month with the most sunshine days is August (28.9 days).
The month with the least sunshine days is March (17.3 days).

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Average UV index in June
Hayward, CA

Average UV index in June - Hayward, CA
  • Average UV index in June: 6

The month with the highest UV index is June (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in June
Hayward, CA

Average cloud cover in June - Hayward, CA
  • Average cloud cover in June: 12

Months with the most cloud cover are March and December (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 7).

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Average visibility in June
Hayward, CA

Average visibility in June - Hayward, CA
  • Average visibility in June: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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