October weather forecast
Pasadena, CA

Share
Pasadena City Hall in California, with neon-lit paths and natural gardens, under a perfect blue night sky
Pasadena City Hall in California, with neon-lit paths and natural gardens, under a perfect blue night sky

Weather in October

With the arrival of October, Pasadena begins to cool down, dropping to 77.5°F (25.3°C) on the higher end of the temperature range. Signifying the onset of fall, October heralds comfortable autumn weather, marked by a subtle drop in temperatures. The decrease in daylight hours and the now-frequent cloud cover signals the seasonal transition. Outdoor explorations continue, now complemented by a soothing breeze and the colorful fall foliage. The shift in wind speed and relative humidity create a perfect balance that enhances the city’s aesthetic appeal during this period.

Temperature

The onset of October in Pasadena results in a small decrease in the average high-temperature, moderately receding from a moderately hot 84.4°F (29.1°C) in September to a still warm 77.5°F (25.3°C). October brings with it a nighttime average temperature of 58.6°F (14.8°C) in Pasadena.

Humidity

In October, the average relative humidity is 48%.

Rainfall

In Pasadena, in October, it is raining for 2.8 days, with typically 0.24" (6mm) of accumulated precipitation. In Pasadena, California, during the entire year, the rain falls for 50.1 days and collects up to 8.5" (216mm) of precipitation.

Daylight

In Pasadena, the average length of the day in October is 11h and 19min.
On the first day of the month, sunrise is at 6:47 am and sunset at 6:36 pm. On the last day of October, in Pasadena, California, sunrise is at 7:12 am and sunset at 6:00 pm PDT.

Sunshine

The average sunshine in October is 8.6h.

UV index

In Pasadena, the average daily maximum UV index in October is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index of 5 during October translates into these guidelines:
Take precautions - Protection against sunburn is recommended. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
[Resources]

Frequently asked questions

What are the temperatures in Pasadena in October?

In Pasadena, 77.5°F (25.3°C) is the average high-temperature and 58.6°F (14.8°C) is the average low-temperature during October. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 86°F (30°C).

What is the average humidity in October in Pasadena?

In October, the average relative humidity is 48%.

How much does it rain in Pasadena in October?

In October, in Pasadena, California, the rain falls for 2.8 days. Throughout October, 0.24" (6mm) of precipitation is accumulated.

How many hours of daylight does Pasadena have in October?

In Pasadena, the average day length in October is 11h and 19min.

What time are sunrise and sunset in October in Pasadena?

On the first day of October in Pasadena, sunrise is at 6:47 am and sunset at 6:36 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:00 pm PDT.

How many hours of sunshine does Pasadena have in October?

In October, the average sunshine duration is 8.6h.

How high is the UV index in October in Pasadena?

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

Average temperature in October
Pasadena, CA

Average temperature in October - Pasadena, CA
  • Average high temperature in October: 77.5°F

The warmest month (with the highest average high temperature) is August (87.1°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in October: 58.6°F

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (46.6°F).

[Resources]

Average pressure in October
Pasadena, CA

Average pressure in October - Pasadena, CA
  • Average pressure in October: 29.95"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

[Resources]

Average wind speed in October
Pasadena, CA

Average wind speed in October - Pasadena, CA
  • Average wind speed in October: 4.5mph

The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

[Resources]

Average humidity in October
Pasadena, CA

Average humidity in October - Pasadena, CA
  • Average humidity in October: 48%

The month with the highest relative humidity is June (58%).
The month with the lowest relative humidity is November (47%).

[Resources]

Average rainfall in October
Pasadena, CA

Average rainfall in October - Pasadena, CA
  • Average rainfall in October: 0.24"

The wettest month (with the highest rainfall) is February (1.77").
The driest month (with the least rainfall) is June (0.04").

[Resources]

Average rainfall days in October
Pasadena, CA

Average rainfall days in October - Pasadena, CA
  • Average rainfall days in October: 2.8 days

The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (1.1 days).

[Resources]

Average daylight in October /
Average sunshine in October
Pasadena, CA

Average daylight in October / Average sunshine in October - Pasadena, 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: 9h and 54min).

  • Average sunshine in October: 8h and 4min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).

[Resources]

Average sunshine days in October
Pasadena, CA

Average sunshine days in October - Pasadena, CA
  • Average sunshine days in October: 27.1 days

The month with the most sunshine days is June (27.5 days).
The month with the least sunshine days is February (21.5 days).

[Resources]

Average UV index in October
Pasadena, CA

Average UV index in October - Pasadena, CA
  • Average UV index in October: 5

The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

[Resources]

Average cloud cover in October
Pasadena, CA

Average cloud cover in October - Pasadena, CA
  • Average cloud cover in October: 9

The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).

[Resources]

Average visibility in October
Pasadena, CA

Average visibility in October - Pasadena, 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).

[Resources]

Pasadena, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location