Brentwood
California, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Brentwood, CA

An aerial shot of scenic and organized home community in Brentwood City, California
An aerial shot of scenic and organized home community in Brentwood City, California
May, the last month of the spring, in Brentwood, is a warm month, with average temperature fluctuating between 50.5°F (10.3°C) and 75.6°F (24.2°C).

Temperature

In Brentwood, the average high-temperature slightly increases, from a pleasant 69.4°F (20.8°C) in April, to a moderately hot 75.6°F (24.2°C). In Brentwood, the average low-temperature is 50.5°F (10.3°C).

Humidity

The average relative humidity in Brentwood is 60%.

Rainfall

In Brentwood, in May, it is raining for 4 days, with typically 0.43" (11mm) of accumulated precipitation. In Brentwood, during the entire year, the rain falls for 62 days and collects up to 10.16" (258mm) of precipitation.

Snowfall

In Brentwood snow does not fall in January through November.

Daylight

The average length of the day in Brentwood is 14.2h.

Sunshine

The average sunshine in May is 11.2h.

UV index

In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for the average person.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.

What is the temperature in May in Brentwood?

The average high-temperature, in May, in Brentwood, California, is 75.6°F (24.2°C), while the average low-temperature is 50.5°F (10.3°C).

What is the average humidity in May in Brentwood?

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

How much does it rain in Brentwood in May?

In Brentwood, in May, during 4 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

When it does not snow in Brentwood?

In Brentwood snow does not fall in January through November.

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

The average length of the day in May in Brentwood, California, is 14.2h.

How many hours of sunshine does Brentwood have in May?

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

What is the UV index reading in May in Brentwood?

The average daily maximum UV index in May in Brentwood, California, is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.
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).

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%).

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

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

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 lowest number of rainy days is August (0.8 days).

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).
Months with the lowest number of snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

Average daylight in May / Average sunshine in May - Brentwood, CA
  • Average daylight in May: 14.2h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.6h).

  • Average sunshine in May: 11.2h

The month with most sunshine is July (Average sunshine: 12.1h).
The month with least sunshine is December (Average sunshine: 5.8h).

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

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