September weather in Vista, CA
The average temperature in Vista in September is 70.8°F (61.2°F–80.5°F). Average precipitation: 0.16 inches.
September is a fall month in Vista, and is warmer than the annual average of 62.7°F. Daily temperatures swing about 19.3°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 12h 12m. For travel, September is a comfortable month to visit.
Avg High
80.5°F
Avg Low
61.2°F
Precipitation
0.16 in
Daylight
12h 12m
September records in Vista
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1998) | 52.0°F (1973) | 0.02 in (2021) |
| September 2 | 100.9°F (1982) | 52.0°F (1989) | 0.04 in (2023) |
| September 3 | 104.0°F (2007) | 54.0°F (1962) | 0.18 in (1998) |
| September 4 | 106.0°F (1988) | 52.0°F (1964) | 0.51 in (1963) |
| September 5 | 105.1°F (1984) | 53.1°F (1962) | 0.10 in (1978) |
| September 6 | 107.1°F (2020) | 50.0°F (1970) | 1.02 in (1978) |
| September 7 | 97.0°F (2011) | 55.0°F (1964) | 0.00 in (1957) |
| September 8 | 104.0°F (1984) | 52.0°F (1978) | 0.00 in (1957) |
| September 9 | 98.1°F (2024) | 51.1°F (2000) | 0.39 in (2022) |
| September 10 | 97.0°F (1983) | 53.1°F (2020) | 1.00 in (1976) |
| September 11 | 99.0°F (1983) | 53.1°F (1985) | 0.75 in (1976) |
| September 12 | 100.9°F (2000) | 50.0°F (1985) | 0.00 in (1957) |
| September 13 | 100.9°F (1971) | 48.9°F (1966) | 0.07 in (1987) |
| September 14 | 106.0°F (2012) | 46.0°F (1966) | 0.01 in (1976) |
| September 15 | 105.1°F (1979) | 48.9°F (1970) | 1.15 in (2015) |
| September 16 | 104.0°F (1979) | 50.0°F (1970) | 0.11 in (2015) |
| September 17 | 99.0°F (2000) | 54.0°F (1977) | 0.69 in (1963) |
| September 18 | 98.1°F (2012) | 50.0°F (1977) | 0.63 in (1963) |
| September 19 | 98.1°F (1979) | 46.9°F (1970) | 0.74 in (1963) |
| September 20 | 98.1°F (2015) | 48.9°F (1965) | 0.15 in (2005) |
| September 21 | 95.0°F (1992) | 50.0°F (1965) | 0.12 in (2016) |
| September 22 | 98.1°F (1992) | 48.0°F (1986) | 0.00 in (1957) |
| September 23 | 102.9°F (1975) | 52.0°F (1970) | 0.13 in (2000) |
| September 24 | 107.1°F (1978) | 48.9°F (1970) | 0.35 in (1986) |
| September 25 | 102.9°F (1978) | 48.9°F (1970) | 1.22 in (1986) |
| September 26 | 106.0°F (1963) | 39.0°F (2007) | 0.19 in (1997) |
| September 27 | 107.1°F (2010) | 48.9°F (1986) | 0.03 in (1982) |
| September 28 | 102.9°F (1963) | 48.0°F (1971) | 0.04 in (2019) |
| September 29 | 105.1°F (1999) | 50.0°F (1965) | 0.26 in (2002) |
| September 30 | 102.0°F (2020) | 42.1°F (2004) | 0.44 in (1983) |