May weather forecast
Porter Ranch, CA

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Weather in May

May, the last month of the spring in Porter Ranch, is a moderately hot month, with an average temperature fluctuating between 73.8°F (23.2°C) and 54.5°F (12.5°C).

Temperature

Porter Ranch's shift into May sets the average high-temperature at a warm 73.8°F (23.2°C), a figure that deviates only slightly from April's 70.3°F (21.3°C). In Porter Ranch, May nights cool down to an average of 54.5°F (12.5°C).

Humidity

The average relative humidity in May is 57%.

Rainfall

May is the last month it rains. During 1.8 rainfall days, in May, Porter Ranch aggregates 0.2" (5mm) of precipitation. Throughout the year, in Porter Ranch, there are 39.8 rainfall days, and 7.52" (191mm) of precipitation is accumulated.

Daylight

In May, the average length of the day is 13h and 58min.
On the first day of the month, sunrise is at 6:03 am and sunset at 7:38 pm. On the last day of May, sunrise is at 5:43 am and sunset at 8:00 pm PDT.

Sunshine

In Porter Ranch, the average sunshine in May is 11.6h.

UV index

In Porter Ranch, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 5 in May translates into the following instructions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

What are the temperatures in Porter Ranch in May?

In May, in Porter Ranch, the average high-temperature is 73.8°F (23.2°C), and the average low-temperature is 54.5°F (12.5°C).

What is the average humidity in May in Porter Ranch?

In Porter Ranch, California, the average relative humidity in May is 57%.

What is the last month it rains in Porter Ranch?

May is the last month it rains in Porter Ranch, California. During 1.8 rainfall days, in May, Porter Ranch aggregates 0.2" (5mm) of precipitation.

What is the average length of the day in May in Porter Ranch?

In Porter Ranch, the average day length in May is 13h and 58min.

When is the sunrise / sunset in May in Porter Ranch?

On the first day of May in Porter Ranch, sunrise is at 6:03 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:00 pm PDT.

How many hours of sunshine does Porter Ranch have in May?

In May, the average sunshine duration in Porter Ranch is 11.6h.

What is the UV index reading in May in Porter Ranch?

In Porter Ranch, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Porter Ranch, CA

Average temperature in May - Porter Ranch, CA
  • Average high temperature in May: 73.8°F

The warmest month (with the highest average high temperature) is August (85.8°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in May: 54.5°F

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is December (46.2°F).

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Average pressure in May
Porter Ranch, CA

Average pressure in May - Porter Ranch, CA
  • Average pressure in May: 29.93"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in May
Porter Ranch, CA

Average wind speed in May - Porter Ranch, CA
  • Average wind speed in May: 5.6mph

The windiest months (with the highest average wind speed) are January and December (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in May
Porter Ranch, CA

Average humidity in May - Porter Ranch, CA
  • Average humidity in May: 57%

The month with the highest relative humidity is June (58%).
The month with the lowest relative humidity is November (47%).

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Average rainfall in May
Porter Ranch, CA

Average rainfall in May - Porter Ranch, CA
  • Average rainfall in May: 0.2"

The wettest month (with the highest rainfall) is February (1.54").
The driest month (with the least rainfall) is June (0").

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Average rainfall days in May
Porter Ranch, CA

Average rainfall days in May - Porter Ranch, CA
  • Average rainfall days in May: 1.8 days

The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.8 days).

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Average daylight in May /
Average sunshine in May
Porter Ranch, CA

Average daylight in May / Average sunshine in May - Porter Ranch, CA
  • Average daylight in May: 14h 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: 9h and 54min).

  • Average sunshine in May: 11h and 4min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).

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Average sunshine days in May
Porter Ranch, CA

Average sunshine days in May - Porter Ranch, CA
  • Average sunshine days in May: 28.8 days

The month with the most sunshine days is May (28.8 days).
The month with the least sunshine days is February (22.9 days).

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Average UV index in May
Porter Ranch, CA

Average UV index in May - Porter Ranch, CA
  • Average UV index in May: 5

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

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Average cloud cover in May
Porter Ranch, CA

Average cloud cover in May - Porter Ranch, CA
  • Average cloud cover in May: 13

The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in May
Porter Ranch, CA

Average visibility in May - Porter Ranch, CA
  • Average visibility in May: 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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Porter Ranch, California, USA

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