April weather forecastFountain Valley, CA
April
Weather in April
April, like March, in Fountain Valley, California, is another refreshing spring month, with an average temperature fluctuating between 67.5°F (19.7°C) and 54.3°F (12.4°C).Temperature
As Fountain Valley welcomes April, the average high-temperature stabilizes at a still refreshing 67.5°F (19.7°C), showing little deviation from March's 65.3°F (18.5°C). In Fountain Valley, the expected average low-temperature for April is a cool 54.3°F (12.4°C).Humidity
In Fountain Valley, the average relative humidity in April is 66%.Rainfall
In Fountain Valley, California, during April, the rain falls for 6.4 days and regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, in Fountain Valley, there are 59.1 rainfall days, and 8.86" (225mm) of precipitation is accumulated.Daylight
The average length of the day in April is 13h and 3min.On the first day of April, sunrise is at 6:38 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 7:34 pm PDT.
Sunshine
In Fountain Valley, the average sunshine in April is 10.9h.UV index
In April, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 during April translates into the following directions:
Be vigilant - Preventing sunburn is recommended. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Fountain Valley, CA
- Average high temperature in April: 67.5°F
The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is December (62.6°F).
- Average low temperature in April: 54.3°F
The month with the highest average low temperature is August (65.1°F).
The coldest month (with the lowest average low temperature) is February (51.8°F).
Average pressure in April
Fountain Valley, CA
- Average pressure in April: 29.97"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in April
Fountain Valley, CA
- Average wind speed in April: 6.5mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (5.2mph).
Average humidity in April
Fountain Valley, CA
- Average humidity in April: 66%
The month with the highest relative humidity is June (72%).
The month with the lowest relative humidity is November (56%).
Average rainfall in April
Fountain Valley, CA
- Average rainfall in April: 0.51"
The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in April
Fountain Valley, CA
- Average rainfall days in April: 6.4 days
The month with the highest number of rainy days is March (7.9 days).
The month with the least rainy days is August (2.1 days).
Average daylight in April /
Average sunshine in April
Fountain Valley, CA
- Average daylight in April: 13h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in April: 10h 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 36min).
Average sunshine days in April
Fountain Valley, CA
- Average sunshine days in April: 21.5 days
The month with the most sunshine days is August (26.8 days).
The month with the least sunshine days is February (20 days).
Average UV index in April
Fountain Valley, CA
- Average UV index in April: 5
The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in April
Fountain Valley, CA
- Average cloud cover in April: 21
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in April
Fountain Valley, 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).
