July weather forecast and climate
Fullerton, CA

Trees and neat lawns of the famous Muckenthaler Community Center in Fullerton, California
Trees and neat lawns of the famous Muckenthaler Community Center in Fullerton, California

Weather in July

July, like June, in Fullerton, California, is another warm summer month, with average temperature varying between 81.5°F (27.5°C) and 63.9°F (17.7°C).

Temperature

In July, the average high-temperature is practically the same as in June - a still warm 81.5°F (27.5°C). In Fullerton, in July, the average low-temperature is 63.9°F (17.7°C).

Heat index

The average heat index in July is appraised at 83.8°F (28.8°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 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, clothing, wind), and activity. 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 especially crucial for babies and toddlers. 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

In July, the average relative humidity is 61%.

Rainfall

In Fullerton, during 3.9 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. Throughout the year, there are 52.5 rainfall days, and 7.09" (180mm) of precipitation is accumulated.

Daylight

In Fullerton, the average length of the day in July is 14.1h.

Sunshine

Months with the most sunshine are July and August, with an average of 12h of sunshine.

UV index

Months with the highest UV index in Fullerton, California, are June through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 6 in July transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. 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 temperature in July in Fullerton?

In Fullerton, in July, the average high-temperature is 81.5°F (27.5°C), and the average low-temperature is 63.9°F (17.7°C). In July, the average heat index (a.k.a. 'real feel', 'feels like'), that takes the relative humidity and factores it into the air temperature reading, is evaluated at 83.8°F (28.8°C).

What is the average humidity in July in Fullerton?

The average relative humidity in July in Fullerton is 61%.

How many days does it rain in July in Fullerton?

In July, in Fullerton, California, the rain falls for 3.9 days. Throughout July, 0.28" (7mm) of precipitation is accumulated.

How many hours of daylight does Fullerton have in July?

The average length of the day in July in Fullerton, California, is 14.1h.

What are the months with the most sunshine in Fullerton?

Months with the most sunshine in Fullerton, California, are July and August, with an average of 12h of sunshine.

How many hours of sunshine does Fullerton have in July?

In Fullerton, California, the average sunshine in July is 12h.

When is the highest UV index in Fullerton?

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

How high is the UV index in July in Fullerton?

The average daily maximum UV index in July in Fullerton is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to the Sun's UV rays.

Average temperature in July
Fullerton, CA

Average temperature in July - Fullerton, CA
  • Average high temperature in July: 81.5°F

The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is December (64°F).

  • Average low temperature in July: 63.9°F

The month with the highest average low temperature is August (65.5°F).
The coldest month (with the lowest average low temperature) is February (50.2°F).

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Average pressure in July
Fullerton, CA

Average pressure in July - Fullerton, CA
  • Average pressure in July: 29.91"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in July
Fullerton, CA

Average wind speed in July - Fullerton, CA
  • Average wind speed in July: 5.1mph

The windiest month (with the highest average wind speed) is April (6mph).
The calmest months (with the lowest average wind speed) are September and October (4.7mph).

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Average humidity in July
Fullerton, CA

Average humidity in July - Fullerton, CA
  • Average humidity in July: 61%

The month with the highest relative humidity is June (65%).
The month with the lowest relative humidity is November (51%).

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Average rainfall in July
Fullerton, CA

Average rainfall in July - Fullerton, CA
  • Average rainfall in July: 0.28"

The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in July
Fullerton, CA

Average rainfall days in July - Fullerton, CA
  • Average rainfall days in July: 3.9 days

The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.5 days).

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

Average daylight in July / Average sunshine in July - Fullerton, CA
  • Average daylight in July: 14.1h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in July: 12h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in July
Fullerton, CA

Average sunshine days in July - Fullerton, CA
  • Average sunshine days in July: 24.3 days

The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is February (20.6 days).

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Average UV index in July
Fullerton, CA

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

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in July
Fullerton, CA

Average cloud cover in July - Fullerton, CA
  • Average cloud cover in July: 8

Months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in July
Fullerton, CA

Average visibility in July - Fullerton, 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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