June weather forecast
San Jose, CA

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A sunset panorama of the lit city of San Jose, California
A sunset panorama of the lit city of San Jose, California

Weather in June

The month of June signals the start of the summer season in San Jose. It offers a newfound balance between warmth and humidity, bringing about idyllic summer conditions. It should also be noted that June has the longest daylight hours, accumulating to roughly 14.7 per day. As a prevalent vacation month, June is synonymous with summer breaks, and its inviting weather conditions back up this reputation.

Temperature

With the onset of June, San Jose's average high-temperature sees a modest rise, moving from May's agreeable 70.5°F (21.4°C) to a moderately hot 78.4°F (25.8°C). The significant decline in San Jose's temperature, from day to night, averages of 53.2°F (11.8°C) in June.

Humidity

In June, the average relative humidity is 61%.

Rainfall

June through August are months with the least rain when the rain falls for 1.2 days and typically aggregates up to 0.04" (1mm) of rain.

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 8:22 pm. On the last day of June, sunrise is at 5:50 am and sunset at 8:32 pm PDT.

Sunshine

In San Jose, the average sunshine in June is 11.8h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: A daily maximum UV index of 6 in June translates into the following instructions:
Deter overexposure. Protecting against the sun's effects is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Updated: Jul 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average June temperature?

In June, the average high-temperature and low-temperature are 78.4°F (25.8°C) and 53.2°F (11.8°C) respectively.

What is the average humidity in June?

The average relative humidity in June is 61%.

What is the driest month?

The months with the least rainfall are June through August Rain falls for 1.2 days and accumulates 0.04" (1mm) of rain.

How much does it rain in June?

In San Jose, in June, it is raining for 1.2 days, with typically 0.04" (1mm) of accumulated precipitation.

When are the longest days?

The month with the longest days is June, with an average of 14h and 42min of daylight.

What is the average length of the day in June?

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

What time are sunrise and sunset in June?

On the first day of June, sunrise is at 5:48 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:32 pm PDT.

How many hours of sunshine does San Jose have in June?

The average sunshine duration in June is 11.8h.

What are the months with the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the UV index reading in June?

In June, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
San Jose, CA

Average temperature in June - San Jose, CA
  • Average high temperature in June: 78.4°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (56.5°F).

  • Average low temperature in June: 53.2°F

The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is December (43°F).

Average pressure in June
San Jose, CA

Average pressure in June - San Jose, CA
  • Average pressure in June: 29.92"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

Average wind speed in June
San Jose, CA

Average wind speed in June - San Jose, CA
  • Average wind speed in June: 5.5mph

The windiest months (with the highest average wind speed) are April and May (5.8mph).
The calmest months (with the lowest average wind speed) are September and October (4.4mph).

Average humidity in June
San Jose, CA

Average humidity in June - San Jose, CA
  • Average humidity in June: 61%

The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are July and September (60%).

Average rainfall in June
San Jose, CA

Average rainfall in June - San Jose, CA
  • Average rainfall in June: 0.04"

The wettest month (with the highest rainfall) is March (0.83").
The driest months (with the least rainfall) are June, July and August (0.04").

Average rainfall days in June
San Jose, CA

Average rainfall days in June - San Jose, CA
  • Average rainfall days in June: 1.2 days

The month with the highest number of rainy days is March (9.8 days).
The month with the least rainy days is August (0.4 days).

Average daylight in June /
Average sunshine in June
San Jose, CA

Average daylight in June / Average sunshine in June - San Jose, 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 month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

Average sunshine days in June
San Jose, CA

Average sunshine days in June - San Jose, CA
  • Average sunshine days in June: 28.2 days

The month with the most sunshine days is August (29.7 days).
The month with the least sunshine days is March (19.5 days).

Average UV index in June
San Jose, CA

Average UV index in June - San Jose, CA
  • Average UV index in June: 6

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

Average cloud cover in June
San Jose, CA

Average cloud cover in June - San Jose, CA
  • Average cloud cover in June: 11

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 6).

Average visibility in June
San Jose, CA

Average visibility in June - San Jose, 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).

San Jose, California, USA

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