September weather in Monroe, LA
The average temperature in Monroe in September is 77.1°F (65.5°F–88.7°F). Average precipitation: 3.55 inches.
September is a fall month in Monroe, and is warmer than the annual average of 65.7°F. Daily temperatures swing about 23.2°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 11m. For travel, September is hot.
Avg High
88.7°F
Avg Low
65.5°F
Precipitation
3.55 in
Daylight
12h 11m
September records in Monroe
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 107.1°F (2000) | 55.9°F (1967) | 2.11 in (2001) |
| September 2 | 105.1°F (2000) | 51.1°F (1967) | 7.40 in (2008) |
| September 3 | 102.9°F (2000) | 55.0°F (1974) | 2.43 in (1985) |
| September 4 | 105.1°F (2000) | 51.1°F (1974) | 2.88 in (1969) |
| September 5 | 102.9°F (1936) | 53.1°F (1974) | 2.19 in (2024) |
| September 6 | 102.0°F (1947) | 53.1°F (1953) | 2.27 in (1937) |
| September 7 | 102.0°F (2019) | 53.1°F (1988) | 0.60 in (1976) |
| September 8 | 100.9°F (2019) | 48.9°F (1988) | 2.03 in (1990) |
| September 9 | 99.0°F (2019) | 53.1°F (2011) | 2.47 in (1936) |
| September 10 | 99.0°F (1980) | 55.0°F (1949) | 4.37 in (1965) |
| September 11 | 99.0°F (1947) | 51.1°F (1976) | 1.49 in (1998) |
| September 12 | 100.0°F (1980) | 51.1°F (1976) | 3.49 in (1998) |
| September 13 | 100.0°F (2019) | 51.1°F (2015) | 2.77 in (1951) |
| September 14 | 100.0°F (1931) | 44.1°F (1964) | 4.30 in (1978) |
| September 15 | 104.0°F (1980) | 48.0°F (1964) | 7.23 in (1978) |
| September 16 | 100.0°F (1995) | 46.9°F (1961) | 1.21 in (1994) |
| September 17 | 100.0°F (1932) | 50.0°F (1961) | 0.75 in (2012) |
| September 18 | 102.0°F (2010) | 51.1°F (1934) | 2.05 in (1966) |
| September 19 | 102.0°F (2010) | 48.0°F (1981) | 2.56 in (1992) |
| September 20 | 102.0°F (2005) | 48.9°F (1961) | 4.49 in (1958) |
| September 21 | 100.9°F (2005) | 45.0°F (1983) | 1.53 in (2003) |
| September 22 | 99.0°F (1931) | 41.0°F (1983) | 1.29 in (2020) |
| September 23 | 100.9°F (1931) | 43.0°F (1982) | 2.80 in (2020) |
| September 24 | 100.9°F (1931) | 46.0°F (1990) | 3.57 in (1991) |
| September 25 | 100.9°F (1931) | 46.0°F (1975) | 2.14 in (1985) |
| September 26 | 97.0°F (1936) | 42.1°F (1975) | 1.51 in (1972) |
| September 27 | 98.1°F (1953) | 44.1°F (1975) | 1.90 in (1961) |
| September 28 | 100.9°F (1953) | 39.0°F (1967) | 1.53 in (1999) |
| September 29 | 99.0°F (1953) | 35.1°F (1967) | 1.82 in (2012) |
| September 30 | 97.0°F (1953) | 41.0°F (1963) | 4.22 in (2012) |