May weather forecast
Brentwood, CA

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Scenic and organized home community in Brentwood City, California
Scenic and organized home community in Brentwood City, California

Weather in May

The last month of the spring, May, is a moderately hot month in Brentwood, California, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 75.6°F (24.2°C).

Temperature

As Brentwood enters May, the average high-temperature marginally increases from the an agreeable 69.4°F (20.8°C) of April to a moderately hot 75.6°F (24.2°C). Brentwood documents a substantial shift from daytime warmth, recording an average nighttime temperature of 50.5°F (10.3°C) in May.

Humidity

The average relative humidity in May in Brentwood, California, is 60%.

Rainfall

In Brentwood, during May, the rain falls for 4 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, in Brentwood, there are 62 rainfall days, and 10.16" (258mm) of precipitation is accumulated.

Snowfall

January through November are months without snowfall in Brentwood.

Daylight

In May, the average length of the day is 14h and 14min.
On the first day of May in Brentwood, sunrise is at 6:09 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:23 pm PDT.

Sunshine

The average sunshine in May is 11.2h.

UV index

In Brentwood, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, the UV index of 5 transforms into the following advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Updated: Feb 9, 2024 | Published by: Weather U.S. | Resources

Frequently asked questions

What is the temperature in May in Brentwood?

In Brentwood, 75.6°F (24.2°C) is the average high-temperature and 50.5°F (10.3°C) is the average low-temperature during May.

What is the average humidity in May in Brentwood?

The average relative humidity in May is 60%.

How many days does it rain in May in Brentwood?

In May, in Brentwood, California, the rain falls for 4 days. Throughout May, 0.43" (11mm) of precipitation is accumulated.

When it does not snow in Brentwood?

In Brentwood, California, snow does not fall in January through November.

What is the average length of the day in May in Brentwood?

The average day length in May in Brentwood, California, is 14h and 14min.

What time are sunrise and sunset in May in Brentwood?

On the first day of May in Brentwood, California, sunrise is at 6:09 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:23 pm PDT.

How many hours of sunshine does Brentwood have in May?

In Brentwood, the average sunshine duration in May is 11.2h.

What is the UV index intensity in May in Brentwood?

In May, the average daily maximum UV index in Brentwood is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Brentwood, CA

Average temperature in May - Brentwood, CA
  • Average high temperature in May: 75.6°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in May: 50.5°F

The month with the highest average low temperature is September (57.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in May
Brentwood, CA

Average pressure in May - Brentwood, CA
  • Average pressure in May: 29.97"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in May
Brentwood, CA

Average wind speed in May - Brentwood, CA
  • Average wind speed in May: 7.6mph

The windiest month (with the highest average wind speed) is June (7.8mph).
The calmest months (with the lowest average wind speed) are January and November (4.5mph).

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Average humidity in May
Brentwood, CA

Average humidity in May - Brentwood, CA
  • Average humidity in May: 60%

The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is September (52%).

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Average rainfall in May
Brentwood, CA

Average rainfall in May - Brentwood, CA
  • Average rainfall in May: 0.43"

The wettest month (with the highest rainfall) is February (2.09").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in May
Brentwood, CA

Average rainfall days in May - Brentwood, CA
  • Average rainfall days in May: 4 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (0.8 days).

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Average snowfall days in May
Brentwood, CA

Average snowfall days in May - Brentwood, CA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in May /
Average sunshine in May
Brentwood, CA

Average daylight in May / Average sunshine in May - Brentwood, CA
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in May: 11h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in May
Brentwood, CA

Average sunshine days in May - Brentwood, CA
  • Average sunshine days in May: 26.6 days

The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is March (17.7 days).

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Average UV index in May
Brentwood, CA

Average UV index in May - Brentwood, CA
  • Average UV index in May: 5

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

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Average cloud cover in May
Brentwood, CA

Average cloud cover in May - Brentwood, CA
  • Average cloud cover in May: 19

The months with the most cloud cover are March and December (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).

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Average visibility in May
Brentwood, CA

Average visibility in May - Brentwood, 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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Brentwood, California, USA

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