Castaic Weather in October
Average highs run from 85°F on October 1 to 77°F on October 31, and lows from 59°F to 54°F. Normal precipitation for the month is 0.52 in over about 2 wet days.
October day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
October at a glance
- Average high
- 81°F
- Average low
- 56°F
- Precipitation
- 0.52 in
- Record high
- 97°FOct 2, 2024
- Record low
- 21°FOct 29, 1971
- Chance of a freeze
- 0%
- Days of 90°F or more
- 4.5
- Daylight
- 11 h 49 min to 10 h 48 min
- Cloud cover
- 27%
- Humidity
- 43%
- Dew point
- 36°F
- Wind
- 7.2 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Oct 1 | 85°F | 59°F | 95°F 2024 | 34°F 1971 | 4% | 0% |
| Oct 2 | 85°F | 59°F | 97°F 2024 | 36°F 1946 | 5% | 0% |
| Oct 3 | 85°F | 59°F | 92°F 2020 | 36°F 1939 | 5% | 0% |
| Oct 4 | 84°F | 59°F | 94°F 1987 | 37°F 2009 | 5% | 0% |
| Oct 5 | 84°F | 58°F | 94°F 2024 | 35°F 2009 | 5% | 0% |
| Oct 6 | 84°F | 58°F | 93°F 2024 | 36°F 1967 | 5% | 0% |
| Oct 7 | 83°F | 58°F | 91°F 2024 | 33°F 1975 | 6% | 0% |
| Oct 8 | 83°F | 58°F | 90°F 1996 | 32°F 1949 | 6% | 0% |
| Oct 9 | 83°F | 57°F | 88°F 2015 | 36°F 1960 | 6% | 0% |
| Oct 10 | 82°F | 57°F | 89°F 2015 | 34°F 1949 | 6% | 0% |
| Oct 11 | 82°F | 57°F | 88°F 1936 | 31°F 2008 | 6% | 0% |
| Oct 12 | 82°F | 57°F | 87°F 1992 | 32°F 2008 | 7% | 0% |
| Oct 13 | 82°F | 57°F | 89°F 1971 | 35°F 2008 | 7% | 0% |
| Oct 14 | 81°F | 57°F | 88°F 2020 | 36°F 1966 | 7% | 0% |
| Oct 15 | 81°F | 56°F | 86°F 1991 | 32°F 1971 | 7% | 0% |
| Oct 16 | 81°F | 56°F | 83°F 1943 | 28°F 1971 | 7% | 0% |
| Oct 17 | 81°F | 56°F | 90°F 2020 | 29°F 1971 | 7% | 0% |
| Oct 18 | 81°F | 56°F | 84°F 1988 | 27°F 1949 | 8% | 0% |
| Oct 19 | 80°F | 56°F | 86°F 2023 | 27°F 1949 | 8% | 0% |
| Oct 20 | 80°F | 56°F | 87°F 2003 | 31°F 1949 | 8% | 0% |
| Oct 21 | 80°F | 55°F | 85°F 2003 | 33°F 1949 | 8% | 0% |
| Oct 22 | 80°F | 55°F | 84°F 2003 | 35°F 1985 | 8% | 0% |
| Oct 23 | 79°F | 55°F | 84°F 1959 | 31°F 1975 | 8% | 0% |
| Oct 24 | 79°F | 55°F | 87°F 1959 | 28°F 1956 | 8% | 0% |
| Oct 25 | 79°F | 55°F | 84°F 2017 | 31°F 1996 | 9% | 0% |
| Oct 26 | 79°F | 55°F | 88°F 2017 | 31°F 1996 | 9% | 0% |
| Oct 27 | 79°F | 55°F | 86°F 2017 | 33°F 1970 | 9% | 0% |
| Oct 28 | 78°F | 54°F | 85°F 2017 | 23°F 1971 | 9% | 0% |
| Oct 29 | 78°F | 54°F | 83°F 2017 | 21°F 1971 | 9% | 0% |
| Oct 30 | 78°F | 54°F | 78°F 1955 | 25°F 1935 | 9% | 0% |
| Oct 31 | 77°F | 54°F | 83°F 2015 | 30°F 1935 | 9% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- October 1
- sunrise 6:49 AM, sunset 6:38 PM
- October 31
- sunrise 7:14 AM, sunset 6:02 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00046161 (Newhall 5NW), public domain. Records: NOAA GHCN-Daily, station USW00023187, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.