Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
October's arrival registers an average high-temperature of a still warm 75.9°F (24.4°C), closely aligning with the temperature of the previous month. Portola Hills experiences an average low-temperature reading of 59.9°F (15.5°C) throughout October.Humidity
In Portola Hills, California, the average relative humidity in October is 60%.Rainfall
In Portola Hills, during October, the rain falls for 4.7 days and regularly aggregates up to 0.47" (12mm) of precipitation. Throughout the year, there are 65.4 rainfall days, and 9.17" (233mm) of precipitation is accumulated.Daylight
In Portola Hills, the average length of the day in October is 11h and 20min.On the first day of October, sunrise is at 6:45 am and sunset at 6:34 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:58 pm PDT.
Sunshine
In October, the average sunshine is 8.5h.UV index
In Portola Hills, the average daily maximum UV index in October is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: In October, a regular UV index of 5 translates into these guidelines:
Take necessary precautions - Defending against sun damage is advocated. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October?
What is the average humidity in October?
How many days does it rain in October?
How many hours of daylight does Portola Hills have in October?
When is the sunrise / sunset in October?
How long on average sun shines in October?
What is the UV index intensity in October in Portola Hills?
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).
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).
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).
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%).
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").
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).
Average daylight in October /
Average sunshine in October
Portola Hills, CA
- Average daylight in October: 11h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in October: 8h and 3min
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).
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).
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).
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).
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).
Portola Hills, California, USA
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