July weather forecast
San Jose, CA

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

Weather in July

July, the same as June, is another warm summer month in San Jose, California, with an average temperature varying between 82°F (27.8°C) and 55.2°F (12.9°C).

Temperature

The warmest month is July, with an average high-temperature of 82°F (27.8°C) and an average low-temperature of 55.2°F (12.9°C).

Heat index

The average heat index in July is calculated to be 84.2°F (29°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like differences in body mass, height, and shape, clothing, pregnancy, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

July and September, with an average relative humidity of 60%, are the least humid months in San Jose.

Rainfall

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

Daylight

The average length of the day in July in San Jose, California, is 14h and 26min.
On the first day of July in San Jose, sunrise is at 5:50 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 8:16 pm PDT.

Sunshine

With an average of 12.1h of sunshine, July has the most sunshine of the year.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in San Jose, California. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In July, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the warmest month in San Jose?

July is the warmest month in San Jose, with an average high-temperature of 82°F (27.8°C) and an average low-temperature of 55.2°F (12.9°C).

What is the temperature in July in San Jose?

In July, in San Jose, California, the average high-temperature is 82°F (27.8°C), and the average low-temperature is 55.2°F (12.9°C). in July, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 84.2°F (29°C).

What are the least humid months in San Jose?

The months with the lowest humidity are July and September, with an average relative humidity of 60%.

What is the average humidity in July in San Jose?

In July, the average relative humidity is 60%.

What is the driest month in San Jose?

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.

How many days does it rain in July in San Jose?

In San Jose, in July, during 1.2 rainfall days, 0.04" (1mm) of precipitation is typically accumulated.

How many hours of daylight does San Jose have in July?

In July, the average day length in San Jose is 14h and 26min.

What time are sunrise and sunset in July in San Jose?

On the first day of July in San Jose, California, sunrise is at 5:50 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 8:16 pm PDT.

What month has the most sunshine in San Jose?

With an average of 12.1h of sunshine, July has the most sunshine of the year in San Jose.

How long on average sun shines in July in San Jose?

In July, the average sunshine duration is 12.1h.

What are the months with the highest UV index in San Jose?

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

How high is the UV index in July in San Jose?

In July, the average daily maximum UV index in San Jose, California, is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
San Jose, CA

Average temperature in July - San Jose, CA
  • Average high temperature in July: 82°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 July: 55.2°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).

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Average pressure in July
San Jose, CA

Average pressure in July - San Jose, CA
  • Average pressure in July: 29.93"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).

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Average wind speed in July
San Jose, CA

Average wind speed in July - San Jose, CA
  • Average wind speed in July: 4.7mph

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).

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Average humidity in July
San Jose, CA

Average humidity in July - San Jose, CA
  • Average humidity in July: 60%

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

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Average rainfall in July
San Jose, CA

Average rainfall in July - San Jose, CA
  • Average rainfall in July: 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").

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Average rainfall days in July
San Jose, CA

Average rainfall days in July - San Jose, CA
  • Average rainfall days in July: 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).

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

Average daylight in July / Average sunshine in July - San Jose, CA
  • Average daylight in July: 14h and 26min

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 July: 12h and 6min

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).

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Average sunshine days in July
San Jose, CA

Average sunshine days in July - San Jose, CA
  • Average sunshine days in July: 28.6 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).

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Average UV index in July
San Jose, CA

Average UV index in July - San Jose, CA
  • Average UV index in July: 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).

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Average cloud cover in July
San Jose, CA

Average cloud cover in July - San Jose, CA
  • Average cloud cover in July: 6

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

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Average visibility in July
San Jose, CA

Average visibility in July - San Jose, CA
  • Average visibility in July: 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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