October weather forecast
Portola Hills, CA

Weather in October

October, the same as September, is another warm autumn month in Portola Hills, California, with an average temperature ranging between min 59.9°F (15.5°C) and max 75.9°F (24.4°C).

Temperature

In Portola Hills, the average high-temperature in October is almost the same as in September - a still warm 75.9°F (24.4°C). In October, in Portola Hills, the average low-temperature is 59.9°F (15.5°C).

Humidity

The average relative humidity in October in Portola Hills is 60%.

Rainfall

In Portola Hills, during 4.7 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. Throughout the year, there are 65.4 rainfall days, and 9.17" (233mm) of precipitation is accumulated.

Daylight

The average length of the day in October is 11h and 20min.
On the first day of the month, sunrise is at 6:44 am and sunset at 6:35 pm. On the last day of October, in Portola Hills, sunrise is at 7:08 am and sunset at 5:59 pm PDT.

Sunshine

The average sunshine in October is 8.5h.

UV index

In October, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: In October, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.
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FAQ

What is the temperature in October in Portola Hills?

In October, in Portola Hills, California, the average high-temperature is 75.9°F (24.4°C), and the average low-temperature is 59.9°F (15.5°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is computed to be 82.4°F (28°C).

What is the average humidity in October in Portola Hills?

In Portola Hills, the average relative humidity in October is 60%.

How much does it rain in Portola Hills in October?

In Portola Hills, during October, the rain falls for 4.7 days and regularly aggregates up to 0.47" (12mm) of precipitation.

What is the average length of the day in October in Portola Hills?

The average day length in October in Portola Hills, California, is 11h and 20min.

When are sunrise and sunset in October in Portola Hills?

On the first day of October in Portola Hills, sunrise is at 6:44 am and sunset at 6:35 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:59 pm PDT.

How many hours of sunshine does Portola Hills have in October?

In Portola Hills, California, the average sunshine duration in October is 8.5h.

How high is the UV index in October in Portola Hills?

In October, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Portola Hills, CA

Average temperature in October - Portola Hills, CA
  • Average high temperature in October: 75.9°F

The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (63.1°F).

  • Average low temperature in October: 59.9°F

The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).

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Average pressure in October
Portola Hills, CA

Average pressure in October - Portola Hills, CA
  • Average pressure in October: 29.94"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).

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Average wind speed in October
Portola Hills, CA

Average wind speed in October - Portola Hills, CA
  • Average wind speed in October: 4.6mph

The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest months (with the lowest average wind speed) are August and September (4.5mph).

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Average humidity in October
Portola Hills, CA

Average humidity in October - Portola Hills, CA
  • Average humidity in October: 60%

The months with the highest relative humidity are May and June (69%).
The month with the lowest relative humidity is November (55%).

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Average rainfall in October
Portola Hills, CA

Average rainfall in October - Portola Hills, CA
  • Average rainfall in October: 0.47"

The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in October
Portola Hills, CA

Average rainfall days in October - Portola Hills, CA
  • Average rainfall days in October: 4.7 days

The month with the highest number of rainy days is March (8.1 days).
The month with the least rainy days is June (2 days).

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Average daylight in October /
Average sunshine in October
Portola Hills, CA

Average daylight in October / Average sunshine in October - Portola Hills, CA
  • Average daylight in October: 11h and 20min

The month with the longest days is June (Average daylight: 14h and 22min).
The month with the shortest days is December (Average daylight: 9h and 58min).

  • Average sunshine in October: 8h and 30min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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Average sunshine days in October
Portola Hills, CA

Average sunshine days in October - Portola Hills, CA
  • Average sunshine days in October: 24.2 days

The months with the most sunshine days are January and October (24.2 days).
The month with the least sunshine days is May (19.3 days).

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Average UV index in October
Portola Hills, CA

Average UV index in October - Portola Hills, CA
  • Average UV index in October: 5

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in October
Portola Hills, CA

Average cloud cover in October - Portola Hills, CA
  • Average cloud cover in October: 14

The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in October
Portola Hills, CA

Average visibility in October - Portola Hills, CA
  • Average visibility in October: 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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