September weather in Coronado, CA
The average temperature in Coronado in September is 70.9°F (65.1°F–76.6°F). Average precipitation: 0.16 inches.
September is a fall month in Coronado, and is warmer than the annual average of 63.9°F. Daily temperatures swing about 11.5°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 12h 11m. For travel, September is one of the best months of the year to visit.
Avg High
76.6°F
Avg Low
65.1°F
Precipitation
0.16 in
Daylight
12h 11m
September records in Coronado
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (1955) | 60.1°F (1951) | 0.04 in (1983) |
| September 2 | 97.0°F (1955) | 60.1°F (1951) | 0.03 in (2023) |
| September 3 | 96.1°F (2007) | 59.0°F (2016) | 0.06 in (1963) |
| September 4 | 108.0°F (1988) | 57.0°F (1951) | 0.44 in (1963) |
| September 5 | 100.0°F (1988) | 57.9°F (1951) | 0.24 in (1978) |
| September 6 | 100.0°F (2011) | 59.0°F (1970) | 0.33 in (1972) |
| September 7 | 91.9°F (2011) | 57.9°F (1956) | 0.20 in (2002) |
| September 8 | 99.0°F (1984) | 57.9°F (1965) | 0.09 in (1982) |
| September 9 | 95.0°F (2015) | 57.9°F (1951) | 0.49 in (2022) |
| September 10 | 93.0°F (2015) | 57.9°F (2010) | 1.22 in (1976) |
| September 11 | 98.1°F (1959) | 57.0°F (1991) | 0.02 in (1976) |
| September 12 | 90.0°F (1971) | 57.0°F (1952) | 0.00 in (1945) |
| September 13 | 91.0°F (1971) | 59.0°F (1950) | 0.00 in (1945) |
| September 14 | 90.0°F (2012) | 57.0°F (1966) | 0.00 in (1945) |
| September 15 | 105.1°F (2012) | 55.9°F (2016) | 0.10 in (1997) |
| September 16 | 96.1°F (2014) | 57.0°F (2016) | 0.08 in (1982) |
| September 17 | 90.0°F (1984) | 60.1°F (1951) | 0.42 in (1963) |
| September 18 | 88.0°F (2020) | 59.0°F (2005) | 0.42 in (1963) |
| September 19 | 90.0°F (1979) | 55.9°F (1978) | 0.06 in (1963) |
| September 20 | 87.1°F (2015) | 54.0°F (1989) | 0.24 in (2005) |
| September 21 | 84.9°F (1972) | 55.9°F (1978) | 0.08 in (1947) |
| September 22 | 88.0°F (1978) | 57.9°F (1953) | 0.80 in (1987) |
| September 23 | 102.0°F (1975) | 57.0°F (1953) | 0.23 in (1958) |
| September 24 | 100.9°F (1978) | 55.9°F (1945) | 0.30 in (1997) |
| September 25 | 99.0°F (1978) | 57.9°F (1953) | 0.59 in (1997) |
| September 26 | 108.0°F (1963) | 54.0°F (1948) | 0.11 in (1982) |
| September 27 | 102.0°F (2010) | 57.0°F (1948) | 0.06 in (1985) |
| September 28 | 98.1°F (1963) | 55.9°F (1971) | 0.04 in (1951) |
| September 29 | 88.0°F (2013) | 55.9°F (1948) | 0.21 in (1983) |
| September 30 | 93.9°F (2020) | 55.9°F (1951) | 0.23 in (2010) |