September weather in Twentynine Palms, CA
The average temperature in Twentynine Palms in September is 82.9°F (69.3°F–96.5°F). Average precipitation: 0.34 inches.
September is a fall month in Twentynine Palms, and is warmer than the annual average of 70.3°F. Daily temperatures swing about 27.2°F between overnight low and afternoon high. Expect about 2 days with precipitation. Daylight averages about 12h 12m. For travel, September is hot.
Avg High
96.5°F
Avg Low
69.3°F
Precipitation
0.34 in
Daylight
12h 12m
September records in Twentynine Palms
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 111.9°F (1950) | 54.0°F (1999) | 1.43 in (1954) |
| September 2 | 114.1°F (1950) | 57.9°F (1970) | 1.15 in (1967) |
| September 3 | 113.0°F (1948) | 51.1°F (1942) | 0.57 in (1960) |
| September 4 | 111.9°F (1948) | 53.1°F (1985) | 1.20 in (1980) |
| September 5 | 109.9°F (1947) | 48.9°F (2004) | 0.48 in (1991) |
| September 6 | 114.1°F (2020) | 53.1°F (2004) | 0.55 in (1985) |
| September 7 | 109.9°F (1955) | 53.1°F (1985) | 0.49 in (1950) |
| September 8 | 109.0°F (1957) | 55.0°F (1942) | 2.04 in (1975) |
| September 9 | 109.0°F (1990) | 52.0°F (1941) | 0.25 in (1980) |
| September 10 | 109.0°F (1969) | 53.1°F (1985) | 2.64 in (1976) |
| September 11 | 109.0°F (1971) | 51.1°F (1985) | 0.05 in (1977) |
| September 12 | 111.0°F (1971) | 52.0°F (1952) | 0.28 in (1940) |
| September 13 | 109.9°F (1948) | 51.1°F (1970) | 0.03 in (1959) |
| September 14 | 111.0°F (1971) | 42.1°F (1970) | 0.04 in (2015) |
| September 15 | 109.9°F (1971) | 53.1°F (1936) | 0.13 in (2017) |
| September 16 | 108.0°F (1971) | 50.0°F (1941) | 0.06 in (1978) |
| September 17 | 108.0°F (2000) | 50.0°F (1982) | 0.51 in (1963) |
| September 18 | 107.1°F (1956) | 53.1°F (1941) | 0.98 in (1963) |
| September 19 | 107.1°F (1962) | 46.0°F (1972) | 0.31 in (2025) |
| September 20 | 105.1°F (1951) | 43.0°F (2004) | 0.84 in (1952) |
| September 21 | 107.1°F (1958) | 46.9°F (1978) | 0.48 in (2007) |
| September 22 | 107.1°F (1982) | 46.9°F (1986) | 0.38 in (1999) |
| September 23 | 106.0°F (1949) | 45.0°F (2004) | 0.96 in (1939) |
| September 24 | 107.1°F (1947) | 46.9°F (1941) | 0.08 in (1976) |
| September 25 | 107.1°F (2002) | 46.9°F (2004) | 2.00 in (1997) |
| September 26 | 104.0°F (1949) | 45.0°F (1948) | 0.67 in (1997) |
| September 27 | 104.0°F (2001) | 46.9°F (1948) | 0.05 in (1991) |
| September 28 | 106.0°F (2024) | 46.0°F (1936) | 0.45 in (1951) |
| September 29 | 104.0°F (2003) | 37.9°F (1971) | 0.06 in (1966) |
| September 30 | 105.1°F (1980) | 43.0°F (1971) | 0.05 in (1946) |