September weather in Etna, CA
The average temperature in Etna in September is 63.0°F (43.3°F–82.6°F). Average precipitation: 0.38 inches.
September is a fall month in Etna, and is warmer than the annual average of 52.4°F. Daily temperatures swing about 39.3°F between overnight low and afternoon high. Expect about 2 days with precipitation. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
82.6°F
Avg Low
43.3°F
Precipitation
0.38 in
Daylight
12h 16m
September records in Etna
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 99.0°F (1955) | 33.1°F (1999) | 0.11 in (1964) |
| September 2 | 105.1°F (1955) | 32.0°F (1964) | 0.39 in (1985) |
| September 3 | 104.0°F (1955) | 33.1°F (2000) | 0.04 in (1946) |
| September 4 | 100.0°F (1955) | 32.0°F (2014) | 0.19 in (2003) |
| September 5 | 102.0°F (1955) | 33.1°F (2014) | 1.62 in (1978) |
| September 6 | 99.0°F (1957) | 32.0°F (2015) | 0.17 in (1978) |
| September 7 | 97.0°F (1957) | 34.0°F (1965) | 0.17 in (2017) |
| September 8 | 93.9°F (1957) | 34.0°F (2002) | 0.08 in (1985) |
| September 9 | 97.0°F (1953) | 34.0°F (1961) | 0.55 in (1998) |
| September 10 | 98.1°F (1953) | 30.9°F (2005) | 0.17 in (1952) |
| September 11 | 97.0°F (2015) | 33.1°F (1954) | 0.25 in (1997) |
| September 12 | 99.0°F (1953) | 28.9°F (1966) | 0.50 in (1992) |
| September 13 | 95.0°F (1953) | 25.0°F (1970) | 0.14 in (1996) |
| September 14 | 93.9°F (1953) | 26.1°F (1970) | 0.40 in (1985) |
| September 15 | 93.0°F (1981) | 30.0°F (1970) | 0.37 in (1996) |
| September 16 | 91.9°F (1981) | 28.9°F (2006) | 0.96 in (1961) |
| September 17 | 91.0°F (1962) | 27.0°F (1965) | 1.01 in (1989) |
| September 18 | 91.9°F (1960) | 25.0°F (1965) | 1.01 in (1966) |
| September 19 | 93.0°F (1953) | 26.1°F (1965) | 0.61 in (1973) |
| September 20 | 91.9°F (1953) | 28.9°F (1972) | 0.19 in (1973) |
| September 21 | 91.0°F (1967) | 26.1°F (1968) | 0.29 in (2013) |
| September 22 | 91.0°F (2011) | 27.0°F (1960) | 0.30 in (1986) |
| September 23 | 93.0°F (1957) | 30.0°F (2017) | 0.32 in (1983) |
| September 24 | 95.0°F (1964) | 26.1°F (1958) | 0.52 in (1990) |
| September 25 | 93.0°F (1964) | 23.0°F (1970) | 2.18 in (2014) |
| September 26 | 93.0°F (1954) | 28.0°F (1955) | 0.88 in (1957) |
| September 27 | 95.0°F (1967) | 26.1°F (2013) | 0.52 in (1981) |
| September 28 | 95.0°F (1967) | 28.9°F (1965) | 0.73 in (1962) |
| September 29 | 91.9°F (1966) | 26.1°F (1954) | 0.62 in (2013) |
| September 30 | 91.9°F (2010) | 28.9°F (1961) | 0.32 in (2013) |