June weather forecast
Cupertino, CA

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Weather in June

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

Temperature

A gentle upsurge in temperatures occurs as May gives way to June, with average highs shifting from an agreeable 69.3°F (20.7°C) to a moderately hot 75.7°F (24.3°C). With a significant daily temperature differential, Cupertino's nighttime temperature in June falls to an average of 52.7°F (11.5°C).

Humidity

In June, the average relative humidity is 65%.

Rainfall

In Cupertino, in June, during 1.3 rainfall days, 0.08" (2mm) of precipitation is typically 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, with an average of 14h and 42min of daylight.
On the first day of the month, sunrise is at 5:48 am and sunset at 8:23 pm. On the last day of June, sunrise is at 5:51 am and sunset at 8:32 pm PDT.

Sunshine

The average sunshine in June is 11.8h.

UV index

With an average maximum UV index of 6, June is the month with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high UV index of 6 in June translates into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Cupertino in June?

In Cupertino, 75.7°F (24.3°C) is the average high-temperature and 52.7°F (11.5°C) is the average low-temperature during June.

What is the average humidity in June?

The average relative humidity in June is 65%.

How much does it rain in June?

In June, the rain falls for 1.3 days. Throughout June, 0.08" (2mm) of precipitation is accumulated.

When are the longest days in Cupertino?

With an average of 14h and 42min of daylight, June has the longest days of the year.

What is the average length of the day in June?

In Cupertino, the average day length in June is 14h and 41min.

When is the sunrise / sunset in June?

On the first day of June, sunrise is at 5:48 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:32 pm PDT.

How long on average sun shines in June?

The average sunshine duration in June in Cupertino, California, is 11.8h.

When is the highest UV index?

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

What is the UV index intensity in June?

In June, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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).

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).

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).

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%).

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").

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).

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 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in June: 11h and 5min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

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).

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).

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).

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).

Cupertino, California, USA

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