September weather in Port Allen, LA
The average temperature in Port Allen in September is °F (°F–°F). Average precipitation: 4.30 inches.
September is a fall month in Port Allen, and is cooler than the annual average of 0°F. Expect about 7 days with precipitation. Daylight averages about 12h 10m.
Avg High
°F
Avg Low
°F
Precipitation
4.30 in
Daylight
12h 10m
September records in Port Allen
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 2.01 in (2001) |
| September 2 | — | — | 4.20 in (2008) |
| September 3 | — | — | 4.67 in (2011) |
| September 4 | — | — | 2.33 in (1988) |
| September 5 | — | — | 1.80 in (2011) |
| September 6 | — | — | 5.55 in (1977) |
| September 7 | — | — | 1.17 in (1991) |
| September 8 | — | — | 2.00 in (1985) |
| September 9 | — | — | 1.30 in (2001) |
| September 10 | — | — | 2.00 in (1977) |
| September 11 | — | — | 2.20 in (1998) |
| September 12 | — | — | 1.91 in (1994) |
| September 13 | — | — | 1.80 in (1998) |
| September 14 | — | — | 2.66 in (1990) |
| September 15 | — | — | 1.95 in (1981) |
| September 16 | — | — | 2.50 in (2021) |
| September 17 | — | — | 1.10 in (1994) |
| September 18 | — | — | 1.60 in (1995) |
| September 19 | — | — | 1.16 in (1991) |
| September 20 | — | — | 1.62 in (1996) |
| September 21 | — | — | 4.13 in (2013) |
| September 22 | — | — | 3.10 in (1995) |
| September 23 | — | — | 2.25 in (1984) |
| September 24 | — | — | 1.47 in (2009) |
| September 25 | — | — | 1.68 in (2005) |
| September 26 | — | — | 3.86 in (2002) |
| September 27 | — | — | 0.62 in (1993) |
| September 28 | — | — | 2.00 in (1996) |
| September 29 | — | — | 0.84 in (1976) |
| September 30 | — | — | 3.13 in (1980) |