July weather forecast and climate
Gilroy, CA

A colorful sunset sky over the hilly region of Gilroy in California
A colorful sunset sky over the hilly region of Gilroy in California

Weather in July

July, like June, in Gilroy, California, is a moderately hot summer month, with temperature in the range of an average high of 84.9°F (29.4°C) and an average low of 54°F (12.2°C).

Temperature

In Gilroy, the average high-temperature is essentially the same as in June - a still warm 84.9°F (29.4°C). In July, the average low-temperature is 54°F (12.2°C).

Heat index

The average heat index in July is calculated to a hot 88.5°F (31.4°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With the 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', 'apparent temperature', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like metabolic differences, wind, differences in body mass, height, and shape, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, 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

In July, the average relative humidity in Gilroy, California, is 58%.

Rainfall

June through August are months without rainfall in Gilroy.

Daylight

In Gilroy, the average length of the day is 14.4h.

Sunshine

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

UV index

Months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
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. 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 July in Gilroy?

The average high-temperature, in July, in Gilroy, California, is 84.9°F (29.4°C), while the average low-temperature is 54°F (12.2°C). The average heat index (a.k.a. 'feels like', 'real feel'), that factores the actual air temperature with the relative humidity, in July is evaluated at 88.5°F (31.4°C).

What is the average humidity in July in Gilroy?

The average relative humidity in July in Gilroy is 58%.

What is the driest month in Gilroy?

In Gilroy, California, rain does not fall in June through August.

How many hours of daylight does Gilroy have in July?

In July, the average length of the day in Gilroy, California, is 14.4h.

What month has the most sunshine in Gilroy?

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

How many hours of sunshine does Gilroy have in July?

The average sunshine in July in Gilroy is 12.1h.

When is the highest UV index in Gilroy?

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

What is the UV index reading in July in Gilroy?

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

Average temperature in July
Gilroy, CA

Average temperature in July - Gilroy, CA
  • Average high temperature in July: 84.9°F

The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (57.6°F).

  • Average low temperature in July: 54°F

Months with the highest average low temperature are August and September (54.1°F).
The coldest months (with the lowest average low temperature) are February and March (40.6°F).

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Average pressure in July
Gilroy, CA

Average pressure in July - Gilroy, CA
  • Average pressure in July: 29.93"

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 July
Gilroy, CA

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

The windiest month (with the highest average wind speed) is May (5.3mph).
The calmest month (with the lowest average wind speed) is November (3.9mph).

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Average humidity in July
Gilroy, CA

Average humidity in July - Gilroy, CA
  • Average humidity in July: 58%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is September (57%).

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Average rainfall in July
Gilroy, CA

Average rainfall in July - Gilroy, CA
  • Average rainfall in July: 0"

The wettest month (with the highest rainfall) is December (0.83").
The driest months (with the least rainfall) are June, July and August (0").

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Average rainfall days in July
Gilroy, CA

Average rainfall days in July - Gilroy, CA
  • Average rainfall days in July: 1.1 days

The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is August (0.6 days).

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Average daylight in July /
Average sunshine in July
Gilroy, CA

Average daylight in July / Average sunshine in July - Gilroy, CA
  • Average daylight in July: 14.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in July: 12.1h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6h).

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Average sunshine days in July
Gilroy, CA

Average sunshine days in July - Gilroy, CA
  • Average sunshine days in July: 29.9 days

The month with the most sunshine days is July (29.9 days).
The month with the least sunshine days is March (21.4 days).

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Average UV index in July
Gilroy, CA

Average UV index in July - Gilroy, CA
  • Average UV index in July: 6

Months with the highest UV index are June, July and August (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 July
Gilroy, CA

Average cloud cover in July - Gilroy, CA
  • Average cloud cover in July: 7

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 July
Gilroy, CA

Average visibility in July - Gilroy, CA
  • Average visibility in July: 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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