October weather forecastPasadena, CA
October
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
October brings a slight decrease in the average high-temperature, shifting from a warm 84.4°F (29.1°C) in September to a still moderately hot 77.5°F (25.3°C). In October, the recorded average low-temperature is a refreshing 58.6°F (14.8°C).Humidity
In October, the average relative humidity is 48%.Rainfall
In Pasadena, in October, during 2.8 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In Pasadena, 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, sunrise is at 7:12 am and sunset at 6:00 pm PDT.
Sunshine
In Pasadena, 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 reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high UV index of 5 in October translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
Average daylight in October /
Average sunshine in October
Pasadena, CA
- Average daylight in October: 11h and 18min
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 36min
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).
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).
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).
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).
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).
