September weather in Fort Walton Beach, FL
The average temperature in Fort Walton Beach in September is 80.5°F (72.4°F–88.5°F). Average precipitation: 5.18 inches.
September is a fall month in Fort Walton Beach, and is warmer than the annual average of 69.8°F. Daily temperatures swing about 16.1°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 10m. For travel, September is a wet month.
Avg High
88.5°F
Avg Low
72.4°F
Precipitation
5.18 in
Daylight
12h 10m
September records in Fort Walton Beach
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (2015) | 72.0°F (2004) | 1.77 in (2023) |
| September 2 | 93.0°F (1997) | 66.9°F (1998) | 2.25 in (1998) |
| September 3 | 96.1°F (2024) | 30.2°F (2020) | 1.97 in (2022) |
| September 4 | 98.1°F (2019) | 71.1°F (2003) | 4.02 in (2011) |
| September 5 | 100.0°F (2019) | 69.1°F (2011) | 1.32 in (2018) |
| September 6 | 95.0°F (2019) | 64.0°F (2011) | 1.62 in (2000) |
| September 7 | 95.0°F (2019) | 63.0°F (2011) | 1.05 in (2000) |
| September 8 | 93.0°F (2019) | 66.0°F (2011) | 1.77 in (2006) |
| September 9 | 95.0°F (2023) | 66.0°F (2011) | 2.45 in (2022) |
| September 10 | 93.0°F (2001) | 68.0°F (2011) | 0.91 in (2022) |
| September 11 | 93.0°F (2013) | 64.0°F (2017) | 0.45 in (2022) |
| September 12 | 95.0°F (2019) | 66.0°F (2017) | 3.39 in (2024) |
| September 13 | 93.9°F (2010) | 64.9°F (2015) | 1.25 in (2007) |
| September 14 | 93.0°F (1999) | 66.9°F (2015) | 3.61 in (2002) |
| September 15 | 93.9°F (1999) | 68.0°F (2025) | 7.26 in (2020) |
| September 16 | 91.0°F (1997) | 66.9°F (1999) | 0.46 in (2009) |
| September 17 | 95.0°F (2019) | 64.9°F (2001) | 1.87 in (2012) |
| September 18 | 93.9°F (2022) | 66.0°F (2000) | 0.58 in (2012) |
| September 19 | 96.1°F (2005) | 66.9°F (2003) | 0.19 in (2014) |
| September 20 | 95.0°F (2016) | 64.0°F (2020) | 0.77 in (1998) |
| September 21 | 95.0°F (1997) | 64.9°F (2020) | 1.43 in (2013) |
| September 22 | 96.1°F (2022) | 59.0°F (1999) | 3.56 in (2003) |
| September 23 | 96.1°F (2016) | 24.3°F (2018) | 0.44 in (2000) |
| September 24 | 96.1°F (2016) | 62.1°F (1999) | 2.10 in (2013) |
| September 25 | 93.9°F (2016) | 0.1°F (2012) | 4.42 in (2002) |
| September 26 | 93.9°F (2022) | 55.9°F (2001) | 2.46 in (2005) |
| September 27 | 93.0°F (2017) | 37.0°F (2012) | 3.20 in (1998) |
| September 28 | 91.9°F (2017) | 60.1°F (2001) | 12.54 in (2015) |
| September 29 | 93.0°F (2017) | 59.0°F (2003) | 0.72 in (2014) |
| September 30 | 93.9°F (2017) | 55.9°F (2020) | 0.54 in (2012) |