June weather forecastFullerton, CA
June
Weather in June
June marks the official onset of summer in Fullerton, California with a noticeable rise in temperature. The maximum temperature averages reach 76.6°F (24.8°C), making it one of the warmer months of the year. The sliding scale of rainfall shows a significant drop in June to only 0.04" (1mm) and offers an optimal outdoor experience. The city radiates an air of vivacity as it gets bathed in approximately 14.4 hours of daylight and 11.9 hours of sunshine daily. Low chances of rain and steady performance of sunshine make June a fine summertime choice for visiting.Temperature
Fullerton experiences an average high-temperature of a warm 76.6°F (24.8°C) in June, marking an insignificant shift from 72.3°F (22.4°C) in May. In the month of June, the average low-temperature usually rests at a mild 58.8°F (14.9°C).Humidity
With an average relative humidity of 65%, June is the most humid month.Rainfall
The month with the least rainfall is June, when the rain falls for 1.5 days and typically collects 0.04" (1mm) of precipitation.Daylight
With an average of 14h and 24min of daylight, June has the longest days of the year in Fullerton.On the first day of the month, sunrise is at 5:41 am and sunset at 7:57 pm. On the last day of June, sunrise is at 5:44 am and sunset at 8:06 pm PDT.
Sunshine
The average sunshine in June 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 risk from unprotected exposure to Sun's UV rays for the average person.Note: In June, the maximum UV index of 6 suggests these recommendations:
Fend off overexposure. Sun protection is vital. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
Average pressure in June
Fullerton, CA
- Average pressure in June: 29.88"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
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).
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%).
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").
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).
Average daylight in June /
Average sunshine in June
Fullerton, CA
- Average daylight in June: 14h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in June: 11h and 54min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
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).
Average UV index in June
Fullerton, CA
- Average UV index in June: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in June
Fullerton, CA
- Average cloud cover in June: 11
The 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).
Average visibility in June
Fullerton, CA
- Average visibility in June: 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).
