June Weather in Fullerton

Last updated: March 2, 2024

The weather in Fullerton, United States, during June is characterized by an average temperature of 20°C (68°F). Highs can soar to 29°C (85°F), while lows may dip to 15°C (59°F). Typically, the humidity level in Fullerton throughout June hovers around 72%.

15°C (59°F)

Minimum temperature

20°C (68°F)

Average temperature

29°C (85°F)

Maximum temperature

72%

Humidity

Precipitation and Sunshine hours

In June, Fullerton averages 4 mm (0.2 inches) of rainfall, typically over the course of 0 rainy days. The month enjoys an average of 14 hours 20 minutes of daylight, with the sun shining for approximately 12 hours 12 minutes each day. Additionally, there is a 58% probability of sunny days during this period.

4 mm (0.2 inches)

Precipitation

0 rainy days

Rainy days

12 hours 12 minutes

Sunshine hours

58%

Chance of sun

UV Index

In June, the UV Index in Fullerton reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 10 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 2 4 7 9 11 11 10 8 5 3 2 1
Exposure Low Moderate High VeryHigh Extreme VeryHigh Moderate Low
Time to burn 45 min 30 min 25 min 15 min 10 min 15 min 30 min 45 min

Compare Fullerton's Climate with Cities Worldwide