Climate and monthly weather forecast
Brentwood, CA

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

Weather in January

January is a moderate winter month in Brentwood, California, with an average temperature ranging between min 41.5°F (5.3°C) and max 56.1°F (13.4°C). In Brentwood, California, the average high-temperature in January is relatively the same as in December - a mild 56.1°F (13.4°C). Weather in January »

Weather in February

February, the last month of the winter in Brentwood, is another mild month, with an average temperature ranging between max 59.7°F (15.4°C) and min 42.4°F (5.8°C). In Brentwood, the average high-temperature in February is relatively the same as in January - a still mild 59.7°F (15.4°C). Weather in February »

Weather in March

The first month of the spring, March, is an enjoyable month in Brentwood, California, with temperature in the range of an average low of 43.9°F (6.6°C) and an average high of 63.5°F (17.5°C). In Brentwood, the average high-temperature in March is essentially the same as in February - an enjoyable 63.5°F (17.5°C). Weather in March »

Weather in April

April in Brentwood, California, is a pleasant spring month, with an average temperature ranging between min 46.6°F (8.1°C) and max 69.4°F (20.8°C). In April, the average high-temperature slightly increases from a comfortable 63.5°F (17.5°C) in March to an agreeable 69.4°F (20.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm 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). In Brentwood, the average high-temperature in May marginally rises from a pleasant 69.4°F (20.8°C) in April to a moderately hot 75.6°F (24.2°C). Weather in May »

Weather in June

The first month of the summer, June, is also a moderately hot month in Brentwood, California, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 84.4°F (29.1°C). In June, the average high-temperature marginally rises from 75.6°F (24.2°C) in May to a still warm 84.4°F (29.1°C). Weather in June »

Weather in July

July in Brentwood, California, is a tropical summer month, with an average temperature ranging between max 88.5°F (31.4°C) and min 56.5°F (13.6°C). July is the warmest month, with an average high-temperature of 88.5°F (31.4°C) and an average low-temperature of 56.5°F (13.6°C). In July, the average heat index is calculated to be a hot 93.2°F (34°C). Weather in July »

Weather in August

August, the last month of the summer in Brentwood, is another hot month, with an average temperature varying between 57.4°F (14.1°C) and 87.4°F (30.8°C). In Brentwood, the average high-temperature in August is relatively the same as in July - a still tropical 87.4°F (30.8°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Brentwood, California, with temperature in the range of an average high of 85.3°F (29.6°C) and an average low of 57.7°F (14.3°C). In September, the average high-temperature is essentially the same as in August - a moderately hot 85.3°F (29.6°C). Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Brentwood, California, with an average temperature fluctuating between 75.9°F (24.4°C) and 54°F (12.2°C). In October, the average high-temperature drops from a moderately hot 85.3°F (29.6°C) in September to a still warm 75.9°F (24.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is another comfortable month in Brentwood, California, with an average temperature fluctuating between 46.6°F (8.1°C) and 63.9°F (17.7°C). In Brentwood, the average high-temperature in November decreases from a moderately hot 75.9°F (24.4°C) in October to a comfortable 63.9°F (17.7°C). Weather in November »

Weather in December

December, the first month of the winter in Brentwood, is still a cool month, with an average temperature fluctuating between 55°F (12.8°C) and 41.7°F (5.4°C). December is the coldest month, with an average high-temperature of 55°F (12.8°C) and an average low-temperature of 41.7°F (5.4°C). Weather in December »
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FAQ

What is the most humid month in Brentwood?

January is the most humid month in Brentwood, California, with an average relative humidity of 74%.

How much does it rain in Brentwood?

Throughout the year, there are 62 rainfall days, and 10.16" (258mm) of precipitation is accumulated.

When it does not snow in Brentwood?

January through November are months without snowfall in Brentwood, California.

How many days does it snow in Brentwood?

Throughout the year, there are 0.1 snowfall days.

What is the month with the lowest UV index in Brentwood?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.

What is the rainiest month in Brentwood?

The month with the most rainfall is February, when the rain falls for 7.8 days and typically aggregates up to 2.09" (53mm) of precipitation.

When is Daylight Saving Time (DST) in Brentwood?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Brentwood, California, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from PDT to PST.

When are the longest days in Brentwood?

The month with the longest days in Brentwood, California, is June, with an average of 14h and 45min of daylight.

When is the highest UV index in Brentwood?

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

What is the warmest month in Brentwood?

The warmest month in Brentwood, California, is July, with an average high-temperature of 88.5°F (31.4°C) and an average low-temperature of 56.5°F (13.6°C).

What is the driest month in Brentwood?

July and August are months with the least rain when the rain falls for 1.3 days and typically aggregates up to 0.04" (1mm) of rain.

What month has the most sunshine in Brentwood?

July has the most sunshine of the year, with an average of 12.1h of sunshine.

What is the least humid month in Brentwood?

September is the least humid month, with an average relative humidity of 52%.

What is the coldest month in Brentwood?

With an average high-temperature of 55°F (12.8°C) and an average low-temperature of 41.7°F (5.4°C), December is the coldest month.

When does it snow in Brentwood?

December is the only month when snow falls in Brentwood.

What is the snowiest month in Brentwood?

December has the most snowfall days of the year in Brentwood. Snow falls for 0.1 days.

What is the month with the shortest days in Brentwood?

The month with the shortest days is December, with an average of 9h and 35min of daylight.

What is the month with the least sunshine in Brentwood?

With an average of 5.8h of sunshine, December has the least sunshine of the year.

Average temperature
Brentwood, CA

Average temperature - Brentwood, CA

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).

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
Brentwood, CA

Average pressure - Brentwood, CA

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
Brentwood, CA

Average wind speed - Brentwood, CA

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
Brentwood, CA

Average humidity - Brentwood, CA

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
Brentwood, CA

Average rainfall - Brentwood, CA

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
Brentwood, CA

Average rainfall days - Brentwood, CA

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
Brentwood, CA

Average snowfall days - Brentwood, CA

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 / Average sunshine
Brentwood, CA

Average daylight / Average sunshine - Brentwood, CA

The month with the longest days is June (Average daylight: 14h and 45min).
The month with the shortest days is December (Average daylight: 9h and 35min).

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
Brentwood, CA

Average sunshine days - Brentwood, CA

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
Brentwood, CA

Average UV index - Brentwood, CA

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 visibility
Brentwood, CA

Average visibility - Brentwood, CA

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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