June 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 June

The first month of the summer, June, is a moderately hot month in Fullerton, California, with average temperature fluctuating between 76.6°F (24.8°C) and 58.8°F (14.9°C).

Temperature

In Fullerton, the average high-temperature is almost the same as in May - a warm 76.6°F (24.8°C). The average low-temperature, in June, is 58.8°F (14.9°C).

Humidity

With an average relative humidity of 65%, June is the most humid month in Fullerton, California.

Rainfall

The month with the least rainfall in Fullerton, California, is June when the rain falls for 1.5 days and typically collects 0.04" (1mm) of precipitation.

Daylight

The month with the longest days in Fullerton, California, is June, with an average of 14.4h of daylight.

Sunshine

In June, the average sunshine in Fullerton is 11.9h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 6 in June transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in June in Fullerton?

The average high-temperature, in June, in Fullerton, is 76.6°F (24.8°C), while the average low-temperature is 58.8°F (14.9°C).

What is the most humid month in Fullerton?

June is the most humid month in Fullerton, California, with an average relative humidity of 65%.

What is the average humidity in June in Fullerton?

In June, the average relative humidity is 65%.

How many days does it rain in June in Fullerton?

In Fullerton, in June, it is raining for 1.5 days, with typically 0.04" (1mm) of accumulated precipitation.

What is the driest month in Fullerton?

June is the month with the least rainfall in Fullerton, California. Rain falls for 1.5 days and accumulates 0.04" (1mm) of precipitation.

When are the longest days in Fullerton?

June has the longest days of the year in Fullerton, California, with an average of 14.4h of daylight.

What is the average length of the day in June in Fullerton?

In June, the average length of the day in Fullerton, California, is 14.4h.

How many hours of sunshine does Fullerton have in June?

In June, the average sunshine in Fullerton, California, is 11.9h.

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

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

What is the UV index intensity in June in Fullerton?

In Fullerton, the average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the UV radiation.

Average temperature in June
Fullerton, CA

Average temperature in June - Fullerton, CA
  • Average high temperature in June: 76.6°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 June: 58.8°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 June
Fullerton, CA

Average pressure in June - Fullerton, CA
  • Average pressure in June: 29.88"

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 June
Fullerton, CA

Average wind speed in June - Fullerton, CA
  • Average wind speed in June: 5.3mph

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 June
Fullerton, CA

Average humidity in June - Fullerton, CA
  • Average humidity in June: 65%

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 June
Fullerton, CA

Average rainfall in June - Fullerton, CA
  • Average rainfall in June: 0.04"

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 June
Fullerton, CA

Average rainfall days in June - Fullerton, CA
  • Average rainfall days in June: 1.5 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 June /
Average sunshine in June
Fullerton, CA

Average daylight in June / Average sunshine in June - Fullerton, CA
  • Average daylight in June: 14.4h

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 June: 11.9h

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 June
Fullerton, CA

Average sunshine days in June - Fullerton, CA
  • Average sunshine days in June: 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 June
Fullerton, CA

Average UV index in June - Fullerton, CA
  • Average UV index in June: 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 June
Fullerton, CA

Average cloud cover in June - Fullerton, CA
  • Average cloud cover in June: 11

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 June
Fullerton, CA

Average visibility in June - Fullerton, CA
  • Average visibility in June: 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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