September weather in Jacksonville, FL
The average temperature in Jacksonville in September is 80.9°F (73.9°F–87.8°F). Average precipitation: 6.08 inches.
September is a fall month in Jacksonville, and is warmer than the annual average of 71.4°F. Daily temperatures swing about 13.9°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 12h 10m. For travel, September is a wet month.
Avg High
87.8°F
Avg Low
73.9°F
Precipitation
6.08 in
Daylight
12h 10m
September records in Jacksonville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (1958) | 68.0°F (1982) | 2.75 in (1995) |
| September 2 | 97.0°F (1989) | 66.0°F (1972) | 2.17 in (1991) |
| September 3 | 97.0°F (1957) | 62.1°F (1972) | 1.33 in (1991) |
| September 4 | 96.1°F (1947) | 64.9°F (1972) | 3.73 in (2024) |
| September 5 | 97.0°F (2019) | 66.0°F (1967) | 3.99 in (2024) |
| September 6 | 97.0°F (2019) | 64.0°F (1990) | 3.47 in (1950) |
| September 7 | 97.0°F (1990) | 64.9°F (1972) | 3.23 in (1993) |
| September 8 | 97.0°F (1990) | 61.0°F (1972) | 2.41 in (2022) |
| September 9 | 97.0°F (1990) | 62.1°F (1972) | 5.50 in (1964) |
| September 10 | 98.1°F (1945) | 64.9°F (1956) | 5.30 in (2017) |
| September 11 | 96.1°F (1985) | 66.9°F (1976) | 3.29 in (1982) |
| September 12 | 98.1°F (1991) | 62.1°F (1981) | 2.61 in (1959) |
| September 13 | 96.1°F (1991) | 64.0°F (1981) | 4.00 in (1975) |
| September 14 | 98.1°F (1991) | 64.0°F (1964) | 2.38 in (2001) |
| September 15 | 97.0°F (1991) | 63.0°F (1976) | 2.47 in (1951) |
| September 16 | 97.0°F (2018) | 61.0°F (2001) | 3.28 in (1945) |
| September 17 | 96.1°F (1987) | 61.0°F (1967) | 1.80 in (1975) |
| September 18 | 97.0°F (1993) | 59.0°F (1981) | 5.17 in (1984) |
| September 19 | 96.1°F (2018) | 50.0°F (1981) | 2.21 in (2007) |
| September 20 | 96.1°F (1988) | 48.9°F (1981) | 4.14 in (1994) |
| September 21 | 96.1°F (1945) | 57.0°F (1981) | 2.35 in (2005) |
| September 22 | 97.0°F (1992) | 59.0°F (1983) | 2.84 in (1947) |
| September 23 | 96.1°F (1988) | 57.9°F (1966) | 4.70 in (1947) |
| September 24 | 96.1°F (1993) | 59.0°F (1990) | 3.92 in (1992) |
| September 25 | 93.9°F (1988) | 57.9°F (1987) | 1.69 in (1949) |
| September 26 | 93.9°F (1980) | 59.0°F (1975) | 3.65 in (2004) |
| September 27 | 95.0°F (1986) | 57.0°F (1956) | 2.56 in (1989) |
| September 28 | 97.0°F (1986) | 12.9°F (1995) | 4.36 in (1984) |
| September 29 | 93.0°F (1994) | 57.0°F (1967) | 3.02 in (1991) |
| September 30 | 93.9°F (2015) | 55.0°F (1967) | 1.75 in (1988) |