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

October 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
October, the same as September, is a moderately hot autumn month in Brentwood, California, with average temperature varying between 54°F (12.2°C) and 75.9°F (24.4°C).

Temperature

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

Humidity

The average relative humidity in Brentwood is 54%.

Rainfall

In Brentwood, during October, the rain falls for 3.3 days and regularly aggregates up to 0.51" (13mm) of precipitation. In Brentwood, California, during the entire year, the rain falls for 62 days and collects up to 10.16" (258mm) of precipitation.

Snowfall

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

Daylight

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

Sunshine

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

UV index

In Brentwood, California, the average daily maximum UV index in October is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in October in Brentwood?

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

What is the average humidity in October in Brentwood?

In October, the average relative humidity is 54%.

How much does it rain in Brentwood in October?

In Brentwood, California, during October, the rain falls for 3.3 days and regularly aggregates up to 0.51" (13mm) of precipitation.

When it does not snow in Brentwood?

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

How many hours of daylight does Brentwood have in October?

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

How long on average sun shines in October in Brentwood?

The average sunshine in October is 7.2h.

What is the UV index reading in October in Brentwood?

In Brentwood, the average daily maximum UV index in October is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in October - Brentwood, CA
  • Average high temperature in October: 75.9°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 October: 54°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 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%).

Average rainfall in October - Brentwood, CA
  • Average rainfall in October: 0.51"

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

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

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 shortest days is December (Average daylight: 9.6h).

  • Average sunshine in October: 7.2h

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 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).