Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
With the onset of May, the average high-temperature stands at a moderately hot 73.8°F (23.2°C), closely aligned with April's 70.3°F (21.3°C). During the month of May, an average low-temperature of 54.5°F (12.5°C) is recorded.Humidity
In May, the average relative humidity 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, there are 39.8 rainfall days, and 7.52" (191mm) of precipitation is accumulated.Daylight
The average length of the day in May 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 May, the average sunshine is 11.6h.UV index
In Porter Ranch, California, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 5 during May translates into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May in Porter Ranch?
What is the last month it rains?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
What is the UV index reading in May?
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).
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).
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).
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%).
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").
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).
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).
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).
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).
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).
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).
Porter Ranch, California, USA
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