September weather in Los Angeles, CA
The average temperature in Los Angeles in September is 70.3°F (62.2°F–78.4°F). Average precipitation: 0.13 inches.
September is a fall month in Los Angeles, and is warmer than the annual average of 63.8°F. Daily temperatures swing about 16.2°F between overnight low and afternoon high. Expect about 0 days with precipitation. Daylight averages about 12h 12m. For travel, September is one of the best months of the year to visit.
Avg High
78.4°F
Avg Low
62.2°F
Precipitation
0.13 in
Daylight
12h 12m
September records in Los Angeles
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 111.0°F (1955) | 53.1°F (1941) | 0.00 in (1935) |
| September 2 | 102.9°F (1955) | 54.0°F (1941) | 0.07 in (2023) |
| September 3 | 99.0°F (2017) | 42.1°F (1994) | 0.01 in (1950) |
| September 4 | 109.9°F (1988) | 39.9°F (1994) | 0.35 in (1963) |
| September 5 | 100.9°F (1984) | 51.1°F (1940) | 0.25 in (1978) |
| September 6 | 100.9°F (2024) | 53.1°F (1946) | 0.10 in (1978) |
| September 7 | 97.0°F (1955) | 54.0°F (1936) | 0.10 in (2023) |
| September 8 | 99.0°F (1984) | 50.0°F (1935) | 0.03 in (1950) |
| September 9 | 100.9°F (1984) | 50.0°F (1935) | 0.00 in (1935) |
| September 10 | 98.1°F (1960) | 51.1°F (1940) | 0.00 in (1935) |
| September 11 | 102.9°F (1959) | 45.0°F (1994) | 0.30 in (2022) |
| September 12 | 96.1°F (1983) | 51.1°F (1952) | 0.01 in (1959) |
| September 13 | 91.9°F (1971) | 52.0°F (2019) | 0.01 in (1978) |
| September 14 | 93.0°F (1979) | 52.0°F (1956) | 0.02 in (1991) |
| September 15 | 102.9°F (1979) | 52.0°F (1956) | 2.50 in (2015) |
| September 16 | 102.9°F (1979) | 52.0°F (1952) | 0.03 in (1961) |
| September 17 | 97.0°F (1939) | 51.1°F (1994) | 0.40 in (1963) |
| September 18 | 96.1°F (1939) | 46.0°F (1994) | 0.10 in (2025) |
| September 19 | 104.0°F (1939) | 50.0°F (1942) | 0.24 in (1989) |
| September 20 | 102.0°F (1939) | 50.0°F (1942) | 0.00 in (1935) |
| September 21 | 109.0°F (1939) | 42.1°F (2011) | 0.00 in (1935) |
| September 22 | 109.0°F (1939) | 51.1°F (1953) | 0.61 in (2007) |
| September 23 | 106.0°F (1939) | 50.0°F (1941) | 0.17 in (2000) |
| September 24 | 102.9°F (1978) | 48.9°F (1941) | 0.00 in (1935) |
| September 25 | 106.0°F (1978) | 48.0°F (1948) | 3.05 in (1939) |
| September 26 | 111.0°F (1963) | 45.0°F (1948) | 0.77 in (1939) |
| September 27 | 106.0°F (1963) | 51.1°F (1948) | 0.01 in (1967) |
| September 28 | 104.0°F (1963) | 50.0°F (1948) | 0.30 in (1967) |
| September 29 | 104.0°F (1963) | 43.0°F (2011) | 0.36 in (1983) |
| September 30 | 93.9°F (2010) | 46.9°F (1941) | 0.04 in (2011) |