October weather forecast and climate
Brentwood, CA

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

Weather in October

October, like September, in Brentwood, California, is a moderately hot autumn month, with temperature in the range of an average low of 54°F (12.2°C) and an average high of 75.9°F (24.4°C).

Temperature

In October, the average high-temperature drops, from 85.3°F (29.6°C) in September, to a still warm 75.9°F (24.4°C). The average low-temperature, in Brentwood, is 54°F (12.2°C).

Humidity

In October, the average relative humidity in Brentwood is 54%.

Rainfall

In October, in Brentwood, the rain falls for 3.3 days. Throughout October, 0.51" (13mm) of precipitation is accumulated. Throughout the year, there are 62 rainfall days, and 10.16" (258mm) of precipitation is accumulated.

Snowfall

January through November are months without snowfall in Brentwood.

Daylight

The average length of the day in Brentwood is 11.2h.

Sunshine

In October, the average sunshine in Brentwood, California, is 7.2h.

UV index

The average daily maximum UV index in October is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: In October, the average maximum UV index of 4 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in October in Brentwood?

In October, in Brentwood, the average high-temperature is 75.9°F (24.4°C), and the average low-temperature is 54°F (12.2°C).

What is the average humidity in October in Brentwood?

In Brentwood, California, the average relative humidity in October is 54%.

How many days does it rain in October in Brentwood?

In Brentwood, in October, during 3.3 rainfall days, 0.51" (13mm) 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 October in Brentwood?

In Brentwood, the average length of the day in October is 11.2h.

How long on average sun shines in October in Brentwood?

In Brentwood, California, the average sunshine in October is 7.2h.

What is the UV index reading in October in Brentwood?

In October, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in October
Brentwood, CA

Average temperature in October - Brentwood, CA
  • Average high temperature in October: 24.4°C

The warmest month (with the highest average high temperature) is July (31.4°C).
The month with the lowest average high temperature is December (12.8°C).

  • Average low temperature in October: 12.2°C

The month with the highest average low temperature is September (14.3°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).

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Average pressure in October
Brentwood, CA

Average pressure in October - Brentwood, CA
  • Average pressure in October: 1015.4mbar

The month with the highest atmospheric pressure is January (1020.6mbar).
The month with the lowest atmospheric pressure is June (1012.9mbar).

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Average wind speed in October
Brentwood, CA

Average wind speed in October - Brentwood, CA
  • Average wind speed in October: 8.8km/h

The windiest month (with the highest average wind speed) is June (12.5km/h).
The calmest months (with the lowest average wind speed) are January and November (7.3km/h).

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Average humidity in October
Brentwood, CA

Average humidity in October - Brentwood, CA
  • Average humidity in October: 54%

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 October
Brentwood, CA

Average rainfall in October - Brentwood, CA
  • Average rainfall in October: 13mm

The wettest month (with the highest rainfall) is February (53mm).
The driest months (with the least rainfall) are July and August (1mm).

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Average rainfall days in October
Brentwood, CA

Average rainfall days in October - Brentwood, CA
  • Average rainfall days in October: 3.3 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 October
Brentwood, CA

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

The month with the highest number of snowfall days is December (0.1 days).
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 October /
Average sunshine in October
Brentwood, CA

Average daylight in October / Average sunshine in October - Brentwood, CA
  • Average daylight in October: 11.2h

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

  • Average sunshine in October: 7.2h

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

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Average sunshine days in October
Brentwood, CA

Average sunshine days in October - Brentwood, CA
  • Average sunshine days in October: 26.9 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 October
Brentwood, CA

Average UV index in October - Brentwood, CA
  • Average UV index in October: 4

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).

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Average cloud cover in October
Brentwood, CA

Average cloud cover in October - Brentwood, CA
  • Average cloud cover in October: 15

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 October
Brentwood, CA

Average visibility in October - Brentwood, CA
  • Average visibility in October: 10km

Months with the highest visibility are May, June, July, August, September, October and November (10km).
Months with the lowest visibility are January, February, March, April and December (9km).

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