October weather forecastCastaic, CA
October
Weather in October
October, the same as September, is a moderately hot autumn month in Castaic, California, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 76.6°F (24.8°C).Temperature
In the transition to October, Castaic observes a minor drop in the average high-temperature, shifting from 84.7°F (29.3°C) in September to a still moderately hot 76.6°F (24.8°C). Castaic's nighttime temperature in October falls to an average of 55.8°F (13.2°C).Humidity
August and October, with an average relative humidity of 43%, are the least humid months.Rainfall
In Castaic, in October, during 2 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. Throughout the year, there are 42.2 rainfall days, and 6.77" (172mm) of precipitation is accumulated.Daylight
In October, the average length of the day is 11h and 18min.On the first day of October, sunrise is at 6:49 am and sunset at 6:38 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 6:01 pm PDT.
Sunshine
In October, the average sunshine is 8.4h.UV index
The average daily maximum UV index in October is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 5 in October translates into the following instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Castaic, CA
- Average high temperature in October: 76.6°F
The warmest month (with the highest average high temperature) is August (88.2°F).
The month with the lowest average high temperature is December (59.5°F).
- Average low temperature in October: 55.8°F
The month with the highest average low temperature is August (63.7°F).
The coldest month (with the lowest average low temperature) is December (42.3°F).
Average pressure in October
Castaic, CA
- Average pressure in October: 29.96"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
Castaic, CA
- Average wind speed in October: 6.2mph
The windiest months (with the highest average wind speed) are January and December (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in October
Castaic, CA
- Average humidity in October: 43%
The month with the highest relative humidity is March (56%).
The months with the lowest relative humidity are August and October (43%).
Average rainfall in October
Castaic, CA
- Average rainfall in October: 0.16"
The wettest month (with the highest rainfall) is December (1.42").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in October
Castaic, CA
- Average rainfall days in October: 2 days
The month with the highest number of rainy days is March (6.9 days).
The month with the least rainy days is June (0.7 days).
Average daylight in October /
Average sunshine in October
Castaic, 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 24min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in October
Castaic, CA
- Average sunshine days in October: 28.1 days
The month with the most sunshine days is August (28.7 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in October
Castaic, CA
- Average UV index in October: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in October
Castaic, CA
- Average cloud cover in October: 9
The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in October
Castaic, 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).





