Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The transition into April is marked with an average high-temperature of an agreeable 70.5°F (21.4°C), showing an insignificant shift from March's 67.6°F (19.8°C). Nightly temperatures drop to an average low of 53.8°F (12.1°C) in April.Humidity
In April, the average relative humidity is 60%.Rainfall
In April, the rain falls for 5.7 days. Throughout April, 0.47" (12mm) of precipitation is 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 April is 13h and 3min.On the first day of April, sunrise is at 6:37 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 7:34 pm PDT.
Sunshine
In Fullerton, the average sunshine in April is 11h.UV index
In April, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 5 in April translates into this advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Fullerton in April?
What is the average humidity in April?
How many days does it rain in April?
How many hours of daylight does Fullerton have in April?
When are sunrise and sunset in April?
How long on average sun shines in April?
What is the UV index intensity in April?
Average temperature in April
Fullerton, CA
- Average high temperature in April: 70.5°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 April: 53.8°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 April
Fullerton, CA
- Average pressure in April: 29.96"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 April
Fullerton, CA
- Average wind speed in April: 6mph
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 April
Fullerton, CA
- Average humidity in April: 60%
The month with the highest relative humidity is June (65%).
The month with the lowest relative humidity is November (51%).
Average rainfall in April
Fullerton, CA
- Average rainfall in April: 0.47"
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 April
Fullerton, CA
- Average rainfall days in April: 5.7 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 April /
Average sunshine in April
Fullerton, CA
- Average daylight in April: 13h and 1min
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 April: 11h and 0min
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 April
Fullerton, CA
- Average sunshine days in April: 22.3 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 April
Fullerton, CA
- Average UV index in April: 5
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 April
Fullerton, CA
- Average cloud cover in April: 19
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 April
Fullerton, CA
- Average visibility in April: 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).
Fullerton, California, USA
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