September weather in Idalou, TX
The average temperature in Idalou in September is 72.3°F (59.8°F–84.9°F). Average precipitation: 2.55 inches.
September is a fall month in Idalou, and is warmer than the annual average of 61.4°F. Daily temperatures swing about 25.1°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 12m. For travel, September is a comfortable month to visit.
Avg High
84.9°F
Avg Low
59.8°F
Precipitation
2.55 in
Daylight
12h 12m
September records in Idalou
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 104.0°F (2014) | 46.9°F (1955) | 0.97 in (1988) |
| September 2 | 100.9°F (1947) | 50.0°F (1950) | 1.79 in (2024) |
| September 3 | 100.9°F (2000) | 48.0°F (1974) | 2.14 in (2006) |
| September 4 | 102.0°F (2023) | 46.9°F (1961) | 2.73 in (1986) |
| September 5 | 102.0°F (2000) | 46.0°F (1961) | 0.39 in (1981) |
| September 6 | 102.9°F (1948) | 52.0°F (2017) | 0.94 in (2014) |
| September 7 | 102.9°F (2023) | 52.0°F (1956) | 1.10 in (1962) |
| September 8 | 107.1°F (2023) | 45.0°F (2020) | 1.89 in (1976) |
| September 9 | 99.0°F (1984) | 41.0°F (2020) | 1.22 in (1949) |
| September 10 | 100.0°F (2000) | 43.0°F (2020) | 0.96 in (1980) |
| September 11 | 102.9°F (2000) | 46.9°F (1959) | 7.46 in (2008) |
| September 12 | 97.0°F (1967) | 44.1°F (1959) | 2.35 in (1989) |
| September 13 | 99.0°F (2024) | 43.0°F (1959) | 0.89 in (2002) |
| September 14 | 100.0°F (1965) | 43.0°F (1959) | 1.75 in (2023) |
| September 15 | 99.0°F (1956) | 42.1°F (1993) | 4.69 in (1995) |
| September 16 | 100.0°F (1965) | 42.1°F (1951) | 1.42 in (2023) |
| September 17 | 98.1°F (1997) | 42.1°F (1951) | 1.42 in (1955) |
| September 18 | 100.0°F (2015) | 43.0°F (1971) | 2.68 in (1965) |
| September 19 | 99.0°F (2024) | 42.1°F (1991) | 1.53 in (1985) |
| September 20 | 99.0°F (2021) | 41.0°F (1971) | 1.94 in (2019) |
| September 21 | 98.1°F (1998) | 33.1°F (1983) | 2.15 in (2019) |
| September 22 | 99.0°F (2025) | 39.9°F (1995) | 0.84 in (2024) |
| September 23 | 99.0°F (2023) | 41.0°F (2009) | 2.56 in (1986) |
| September 24 | 97.0°F (1953) | 37.9°F (1989) | 2.72 in (2014) |
| September 25 | 100.0°F (2005) | 36.0°F (2000) | 1.34 in (2004) |
| September 26 | 100.0°F (2020) | 39.0°F (2000) | 1.46 in (1980) |
| September 27 | 100.0°F (1953) | 41.0°F (2000) | 1.63 in (2004) |
| September 28 | 98.1°F (1994) | 37.0°F (1996) | 1.26 in (2019) |
| September 29 | 97.0°F (1977) | 37.9°F (1985) | 0.53 in (1990) |
| September 30 | 99.0°F (1977) | 35.1°F (1985) | 0.74 in (2004) |