September weather in Harahan, LA
The average temperature in Harahan in September is 81.8°F (73.6°F–90.1°F). Average precipitation: 5.72 inches.
September is a fall month in Harahan, and is warmer than the annual average of 71.8°F. Daily temperatures swing about 16.5°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 10m. For travel, September is a wet month.
Avg High
90.1°F
Avg Low
73.6°F
Precipitation
5.72 in
Daylight
12h 10m
September records in Harahan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1940) | 62.1°F (1915) | 7.34 in (2008) |
| September 2 | 100.9°F (2000) | 59.0°F (1919) | 3.73 in (1896) |
| September 3 | 98.1°F (2000) | 66.9°F (1919) | 8.05 in (2011) |
| September 4 | 100.9°F (2000) | 60.1°F (1942) | 4.30 in (1948) |
| September 5 | 100.0°F (2000) | 60.1°F (1934) | 4.39 in (2023) |
| September 6 | 99.0°F (1925) | 57.9°F (1893) | 2.78 in (1973) |
| September 7 | 99.0°F (2019) | 60.1°F (1893) | 12.96 in (1929) |
| September 8 | 100.0°F (2019) | 61.0°F (1918) | 3.29 in (2023) |
| September 9 | 98.1°F (2019) | 61.0°F (1893) | 3.70 in (1898) |
| September 10 | 100.9°F (1940) | 62.1°F (1953) | 3.92 in (1898) |
| September 11 | 98.1°F (1927) | 60.1°F (1924) | 10.20 in (1998) |
| September 12 | 97.0°F (1927) | 59.0°F (1976) | 6.85 in (2024) |
| September 13 | 98.1°F (1911) | 57.0°F (1940) | 5.43 in (1948) |
| September 14 | 97.0°F (1921) | 55.0°F (1902) | 3.98 in (1907) |
| September 15 | 97.0°F (1980) | 52.0°F (1902) | 4.13 in (2021) |
| September 16 | 98.1°F (1911) | 59.0°F (1961) | 3.38 in (1954) |
| September 17 | 98.1°F (1933) | 60.1°F (1914) | 1.64 in (1954) |
| September 18 | 97.0°F (2018) | 53.1°F (1999) | 4.90 in (1957) |
| September 19 | 99.0°F (1927) | 54.0°F (1901) | 3.60 in (1943) |
| September 20 | 96.1°F (1921) | 52.0°F (1981) | 4.65 in (1909) |
| September 21 | 95.0°F (1893) | 51.1°F (1918) | 3.69 in (1940) |
| September 22 | 97.0°F (1936) | 48.9°F (1913) | 2.63 in (1920) |
| September 23 | 96.1°F (1921) | 52.0°F (1913) | 2.73 in (1955) |
| September 24 | 96.1°F (1936) | 50.0°F (1927) | 5.40 in (1956) |
| September 25 | 93.9°F (1921) | 55.9°F (1950) | 7.37 in (2002) |
| September 26 | 96.1°F (2016) | 52.0°F (1899) | 2.82 in (2002) |
| September 27 | 95.0°F (1986) | 55.0°F (1942) | 3.64 in (1905) |
| September 28 | 95.0°F (1941) | 54.0°F (1908) | 2.35 in (1943) |
| September 29 | 93.9°F (1911) | 53.1°F (1896) | 2.93 in (1898) |
| September 30 | 95.0°F (1941) | 48.9°F (1920) | 8.36 in (1915) |