June weather forecast
Cupertino, CA

Weather in June

The first month of the summer, June, is a moderately hot month in Cupertino, California, with an average temperature varying between 52.7°F (11.5°C) and 75.7°F (24.3°C).

Temperature

In Cupertino, the average high-temperature in June slightly increases from a pleasant 69.3°F (20.7°C) in May to a warm 75.7°F (24.3°C). The average low-temperature, in June, is 52.7°F (11.5°C).

Humidity

In June, the average relative humidity in Cupertino, California, is 65%.

Rainfall

In June, the rain falls for 1.3 days. Throughout June, 0.08" (2mm) of precipitation is accumulated. Throughout the year, there are 53.6 rainfall days, and 5.39" (137mm) of precipitation is accumulated.

Daylight

June has the longest days of the year in Cupertino, with an average of 14h and 41min of daylight.
On the first day of June in Cupertino, sunrise is at 5:48 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:32 pm PDT.

Sunshine

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

UV index

June is the month with the highest UV index, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 6 in June transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in June in Cupertino?

In June, the average relative humidity in Cupertino, California, is 65%.

How much does it rain in Cupertino in June?

In Cupertino, in June, during 1.3 rainfall days, 0.08" (2mm) of precipitation is typically accumulated.

When are the longest days in Cupertino?

With an average of 14h and 41min of daylight, June has the longest days of the year in Cupertino, California.

What is the average length of the day in June in Cupertino?

The average day length in June in Cupertino is 14h and 41min.

What time are sunrise and sunset in June in Cupertino?

On the first day of June in Cupertino, sunrise is at 5:48 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:32 pm PDT.

How long on average sun shines in June in Cupertino?

In Cupertino, the average sunshine duration in June is 11.8h.

What is the month with the highest UV index in Cupertino?

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

What is the UV index reading in June in Cupertino?

In June, the average daily maximum UV index in Cupertino is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.

Average temperature in June
Cupertino, CA

Average temperature in June - Cupertino, CA
  • Average high temperature in June: 75.7°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (57°F).

  • Average low temperature in June: 52.7°F

The month with the highest average low temperature is August (56.1°F).
The coldest months (with the lowest average low temperature) are February and March (44.2°F).

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Average pressure in June
Cupertino, CA

Average pressure in June - Cupertino, CA
  • Average pressure in June: 29.93"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).

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Average wind speed in June
Cupertino, CA

Average wind speed in June - Cupertino, CA
  • Average wind speed in June: 5.7mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).

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Average humidity in June
Cupertino, CA

Average humidity in June - Cupertino, CA
  • Average humidity in June: 65%

The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are July, September and October (64%).

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Average rainfall in June
Cupertino, CA

Average rainfall in June - Cupertino, CA
  • Average rainfall in June: 0.08"

The wettest month (with the highest rainfall) is February (1.02").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in June
Cupertino, CA

Average rainfall days in June - Cupertino, CA
  • Average rainfall days in June: 1.3 days

The month with the highest number of rainy days is March (9 days).
The month with the least rainy days is August (0.8 days).

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

Average daylight in June / Average sunshine in June - Cupertino, CA
  • Average daylight in June: 14h and 41min

The month with the longest days is June (Average daylight: 14h and 41min).
The month with the shortest days is December (Average daylight: 9h and 38min).

  • Average sunshine in June: 11.8h

The months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days in June
Cupertino, CA

Average sunshine days in June - Cupertino, CA
  • Average sunshine days in June: 27.2 days

The month with the most sunshine days is August (28.5 days).
The months with the least sunshine days are February and March (20.8 days).

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Average UV index in June
Cupertino, CA

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

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

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Average cloud cover in June
Cupertino, CA

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

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 7).

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Average visibility in June
Cupertino, CA

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

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

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