April weather forecast and climate
Castaic, CA

Weather in April

April is an agreeable spring month in Castaic, California, with average temperature ranging between min 47.5°F (8.6°C) and max 69.6°F (20.9°C).

Temperature

In April, the average high-temperature is practically the same as in March - an agreeable 69.6°F (20.9°C). The average low-temperature, in Castaic, is 47.5°F (8.6°C).

Humidity

The average relative humidity in April is 53%.

Rainfall

In Castaic, in April, during 4.9 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Castaic, during the entire year, the rain falls for 42.2 days and collects up to 6.77" (172mm) of precipitation.

Daylight

The average length of the day in Castaic is 13.1h.

Sunshine

In Castaic, the average sunshine is 11.1h.

UV index

In April, the average daily maximum UV index in Castaic is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in April in Castaic?

In Castaic, in April, the average high-temperature is 69.6°F (20.9°C), and the average low-temperature is 47.5°F (8.6°C).

What is the average humidity in April in Castaic?

The average relative humidity in April is 53%.

How much does it rain in Castaic in April?

In Castaic, in April, during 4.9 rainfall days, 0.51" (13mm) of precipitation is typically accumulated.

How many hours of daylight does Castaic have in April?

The average length of the day in April in Castaic is 13.1h.

How many hours of sunshine does Castaic have in April?

The average sunshine in April in Castaic is 11.1h.

How high is the UV index in April in Castaic?

In April, the average daily maximum UV index in Castaic is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in April
Castaic, CA

Average temperature in April - Castaic, CA
  • Average high temperature in April: 69.6°F

The warmest month (with the highest average high temperature) is August (88.2°F).
The month with the lowest average high temperature is December (59.5°F).

  • Average low temperature in April: 47.5°F

The month with the highest average low temperature is August (63.7°F).
The coldest month (with the lowest average low temperature) is December (42.3°F).

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Average pressure in April
Castaic, CA

Average pressure in April - Castaic, CA
  • Average pressure in April: 29.98"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in April
Castaic, CA

Average wind speed in April - Castaic, CA
  • Average wind speed in April: 6.6mph

The windiest months (with the highest average wind speed) are January and December (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in April
Castaic, CA

Average humidity in April - Castaic, CA
  • Average humidity in April: 53%

The month with the highest relative humidity is March (56%).
Months with the lowest relative humidity are August and October (43%).

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Average rainfall in April
Castaic, CA

Average rainfall in April - Castaic, CA
  • Average rainfall in April: 0.51"

The wettest month (with the highest rainfall) is December (1.42").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days in April
Castaic, CA

Average rainfall days in April - Castaic, CA
  • Average rainfall days in April: 4.9 days

The month with the highest number of rainy days is March (6.9 days).
The month with the least rainy days is June (0.7 days).

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Average daylight in April /
Average sunshine in April
Castaic, CA

Average daylight in April / Average sunshine in April - Castaic, CA
  • Average daylight in April: 13.1h

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 April: 11.1h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
The month with the least sunshine is February (Average sunshine: 6.7h).

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Average sunshine days in April
Castaic, CA

Average sunshine days in April - Castaic, CA
  • Average sunshine days in April: 25 days

The month with the most sunshine days is August (28.7 days).
The month with the least sunshine days is February (21.5 days).

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Average UV index in April
Castaic, CA

Average UV index in April - Castaic, CA
  • Average UV index in April: 5

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are February, November and December (UV index 3).

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Average cloud cover in April
Castaic, CA

Average cloud cover in April - Castaic, CA
  • Average cloud cover in April: 17

The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in April
Castaic, CA

Average visibility in April - Castaic, CA
  • Average visibility in April: 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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