July weather forecast
Castaic, CA

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Weather in July

July in Castaic, California, is a tropical summer month, with an average temperature varying between 63°F (17.2°C) and 87.3°F (30.7°C).

Temperature

Castaic perceives a slight temperature ascent during July, with average high-temperatures adjusting from a warm 81.7°F (27.6°C) in June to a tropical 87.3°F (30.7°C). Despite the high peak temperatures, Castaic witnesses an average nighttime cooling to an enjoyable 63°F (17.2°C) in July.

Heat index

The average heat index in July is estimated at a tropical 89.6°F (32°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

In Castaic, the average relative humidity in July is 48%.

Rainfall

In Castaic, in July, it is raining for 2.2 days, with typically 0.08" (2mm) of accumulated precipitation. Throughout the year, in Castaic, there are 42.2 rainfall days, and 6.77" (172mm) of precipitation is accumulated.

Daylight

In Castaic, the average length of the day in July is 14h and 12min.
On the first day of the month, sunrise is at 5:45 am and sunset at 8:11 pm. On the last day of July, sunrise is at 6:04 am and sunset at 7:56 pm PDT.

Sunshine

The months with the most sunshine in Castaic are June and July, with an average of 12.1h of sunshine.

UV index

The months with the highest UV index in Castaic, California, are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In July, a daily UV index of 6 turns into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
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Frequently asked questions

How hot is it in Castaic in July?

The average high-temperature, in July, in Castaic, is 87.3°F (30.7°C), while the average low-temperature is 63°F (17.2°C). In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is estimated at 89.6°F (32°C).

What is the average humidity in July in Castaic?

In Castaic, California, the average relative humidity in July is 48%.

How many days does it rain in July in Castaic?

In Castaic, during July, the rain falls for 2.2 days and regularly aggregates up to 0.08" (2mm) of precipitation.

What is the average length of the day in July in Castaic?

The average day length in July in Castaic, California, is 14h and 12min.

When are sunrise and sunset in July in Castaic?

On the first day of July in Castaic, sunrise is at 5:45 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 7:56 pm PDT.

What are the months with the most sunshine in Castaic?

The months with the most sunshine are June and July, with an average of 12.1h of sunshine.

How long on average sun shines in July in Castaic?

In Castaic, California, the average sunshine duration in July is 12.1h.

What are the months with the highest UV index in Castaic?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in July in Castaic?

In July, the average daily maximum UV index in Castaic is 6. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Castaic, CA

Average temperature in July - Castaic, CA
  • Average high temperature in July: 87.3°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 July: 63°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 July
Castaic, CA

Average pressure in July - Castaic, CA
  • Average pressure in July: 29.91"Hg

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

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Average wind speed in July
Castaic, CA

Average wind speed in July - Castaic, CA
  • Average wind speed in July: 5.1mph

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 July
Castaic, CA

Average humidity in July - Castaic, CA
  • Average humidity in July: 48%

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

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Average rainfall in July
Castaic, CA

Average rainfall in July - Castaic, CA
  • Average rainfall in July: 0.08"

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 July
Castaic, CA

Average rainfall days in July - Castaic, CA
  • Average rainfall days in July: 2.2 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 July /
Average sunshine in July
Castaic, CA

Average daylight in July / Average sunshine in July - Castaic, CA
  • Average daylight in July: 14h 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 July: 12h and 1min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).

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Average sunshine days in July
Castaic, CA

Average sunshine days in July - Castaic, CA
  • Average sunshine days in July: 27.2 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 July
Castaic, CA

Average UV index in July - Castaic, CA
  • Average UV index in July: 6

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

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Average cloud cover in July
Castaic, CA

Average cloud cover in July - Castaic, CA
  • Average cloud cover in July: 6

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 July
Castaic, CA

Average visibility in July - Castaic, CA
  • Average visibility in July: 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).

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Castaic, California, USA

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