July weather forecast and climate
Livermore, CA

A path in the scenic hilly and forest landscape of the famous Lake Del Valle Regional Park in Livermore, California
A path in the scenic hilly and forest landscape of the famous Lake Del Valle Regional Park in Livermore, California

Weather in July

July in Livermore, California, is a hot summer month, with temperature in the range of an average high of 86°F (30°C) and an average low of 55.8°F (13.2°C).

Temperature

The warmest month is July, with an average high-temperature of 86°F (30°C) and an average low-temperature of 55.8°F (13.2°C).

Heat index

In July, the average heat index is appraised at a tropical 89.4°F (31.9°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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', 'felt air temperature', 'apparent temperature', or 'feels like', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, pregnancy, metabolic differences). 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. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

Months with the lowest humidity in Livermore are July and September, with an average relative humidity of 55%.

Rainfall

In Livermore, in July, it is raining for 2.1 days, with typically 0.08" (2mm) of accumulated precipitation. In Livermore, during the entire year, the rain falls for 70.6 days and collects up to 11.3" (287mm) of precipitation.

Daylight

The average length of the day in Livermore is 14.5h.

Sunshine

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

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In July, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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 Livermore?

July is the warmest month, with an average high-temperature of 86°F (30°C) and an average low-temperature of 55.8°F (13.2°C).

What is the temperature in July in Livermore?

In July, in Livermore, the average high-temperature is 86°F (30°C), and the average low-temperature is 55.8°F (13.2°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), that calculates temperature value influenced by the moisture in the air, is calculated to 89.4°F (31.9°C).

What is the least humid month in Livermore?

Months with the lowest humidity in Livermore, California, are July and September, with an average relative humidity of 55%.

What is the average humidity in July in Livermore?

In July, the average relative humidity in Livermore, California, is 55%.

How much does it rain in Livermore in July?

In Livermore, California, in July, it is raining for 2.1 days, with typically 0.08" (2mm) of accumulated precipitation.

How many hours of daylight does Livermore have in July?

The average length of the day in July in Livermore is 14.5h.

What month has the most sunshine in Livermore?

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

How long on average sun shines in July in Livermore?

In July, the average sunshine in Livermore is 12.1h.

What are the months with the highest UV index in Livermore?

Months with the highest UV index in Livermore are June through August, with an average maximum UV index of 6.

What is the UV index intensity in July in Livermore?

In July, the average daily maximum UV index in Livermore, California, is 6. A UV Index estimate of 6 to 7 represents a high health threat from the exposure to the Sun's UV radiation.

Average temperature in July
Livermore, CA

Average temperature in July - Livermore, CA
  • Average high temperature in July: 86°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (54.9°F).

  • Average low temperature in July: 55.8°F

The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is January (41.4°F).

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Average pressure in July
Livermore, CA

Average pressure in July - Livermore, 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
Livermore, CA

Average wind speed in July - Livermore, CA
  • Average wind speed in July: 6.1mph

The windiest months (with the highest average wind speed) are May and June (6.5mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).

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Average humidity in July
Livermore, CA

Average humidity in July - Livermore, CA
  • Average humidity in July: 55%

The month with the highest relative humidity is March (74%).
Months with the lowest relative humidity are July and September (55%).

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Average rainfall in July
Livermore, CA

Average rainfall in July - Livermore, CA
  • Average rainfall in July: 0.08"

The wettest month (with the highest rainfall) is February (2.09").
The driest month (with the least rainfall) is August (0.04").

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Average rainfall days in July
Livermore, CA

Average rainfall days in July - Livermore, CA
  • Average rainfall days in July: 2.1 days

The month with the highest number of rainy days is March (12.7 days).
The month with the least rainy days is August (1.3 days).

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

Average daylight in July / Average sunshine in July - Livermore, CA
  • Average daylight in July: 14.5h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • 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
Livermore, CA

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

The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is March (17.6 days).

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Average UV index in July
Livermore, CA

Average UV index in July - Livermore, 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
Livermore, CA

Average cloud cover in July - Livermore, 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).

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Average visibility in July
Livermore, CA

Average visibility in July - Livermore, 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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