July weather forecast
Alviso, CA

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Weather in July

July, the same as June, is another warm summer month in Alviso, California, with an average temperature ranging between min 55.9°F (13.3°C) and max 83.5°F (28.6°C).

Temperature

July is the month when Alviso, California, experiences its warmest temperatures, averaging a high of 83.5°F (28.6°C) and a low of 55.9°F (13.3°C).

Heat index

July's mean heat index is estimated at a tropical 86°F (30°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

With an average relative humidity of 58%, July is the least humid month.

Rainfall

June through August are months with the least rain when the rain falls for 1.3 days and typically aggregates up to 0.04" (1mm) of rain.

Daylight

The average length of the day in July is 14h and 26min.
On the first day of the month, sunrise is at 5:51 am and sunset at 8:32 pm. On the last day of July, sunrise is at 6:12 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. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum daily UV index of 6 during July morphs into the following directions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.

Frequently asked questions

What is the hottest time of year?

Alviso's July weather, marked by an average high temperature of 83.5°F (28.6°C) and an average low temperature of 55.9°F (13.3°C), is the warmest in the year.

How hot is July in Alviso?

In July, in Alviso, the average high-temperature is 83.5°F (28.6°C), and the average low-temperature is 55.9°F (13.3°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is estimated at 86°F (30°C).

What is the least humid month?

The least humid month is July, with an average relative humidity of 58%.

What is the average humidity in July?

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

What is the driest month in Alviso?

The months with the least rainfall are June through August Rain falls for 1.3 days and accumulates 0.04" (1mm) of rain.

How much does it rain in July?

In Alviso, in July, it is raining for 1.3 days, with typically 0.04" (1mm) of accumulated precipitation.

How many hours of daylight does Alviso have in July?

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

What time are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:51 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 8:16 pm PDT.

What month has the most sunshine?

The month with the most sunshine in Alviso, California, is July, with an average of 12.1h of sunshine.

How long on average sun shines in July in Alviso?

In July, the average sunshine duration is 12.1h.

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 intensity in July in Alviso?

In Alviso, the average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents a high health threat 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 July
Alviso, CA

Average temperature in July - Alviso, CA
  • Average high temperature in July: 83.5°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (56.3°F).

  • Average low temperature in July: 55.9°F

The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are January and December (42.6°F).

Average pressure in July
Alviso, CA

Average pressure in July - Alviso, CA
  • Average pressure in July: 29.93"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

Average wind speed in July
Alviso, CA

Average wind speed in July - Alviso, CA
  • Average wind speed in July: 4.8mph

The windiest month (with the highest average wind speed) is May (5.8mph).
The calmest months (with the lowest average wind speed) are October and November (4.3mph).

Average humidity in July
Alviso, CA

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

The month with the highest relative humidity is March (73%).
The month with the lowest relative humidity is July (58%).

Average rainfall in July
Alviso, CA

Average rainfall in July - Alviso, 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").

Average rainfall days in July
Alviso, CA

Average rainfall days in July - Alviso, CA
  • Average rainfall days in July: 1.3 days

The month with the highest number of rainy days is March (9.9 days).
The month with the least rainy days is August (0.4 days).

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

Average daylight in July / Average sunshine in July - Alviso, CA
  • Average daylight in July: 14h and 2min

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 July: 12h and 1min

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 July
Alviso, CA

Average sunshine days in July - Alviso, CA
  • Average sunshine days in July: 28.3 days

The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is March (19.5 days).

Average UV index in July
Alviso, CA

Average UV index in July - Alviso, 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).

Average cloud cover in July
Alviso, CA

Average cloud cover in July - Alviso, CA
  • Average cloud cover in July: 5

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).

Average visibility in July
Alviso, CA

Average visibility in July - Alviso, 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).

Alviso, California, USA

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