September weather in Plains, TX
The average temperature in Plains in September is 70.6°F (56.9°F–84.3°F). Average precipitation: 2.48 inches.
September is a fall month in Plains, and is warmer than the annual average of 59.5°F. Daily temperatures swing about 27.4°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 12m. For travel, September is a comfortable month to visit.
Avg High
84.3°F
Avg Low
56.9°F
Precipitation
2.48 in
Daylight
12h 12m
September records in Plains
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (2011) | 46.9°F (1955) | 0.41 in (1972) |
| September 2 | 100.9°F (2014) | 46.9°F (1950) | 2.00 in (1988) |
| September 3 | 100.9°F (1947) | 45.0°F (1974) | 0.83 in (2006) |
| September 4 | 100.0°F (1970) | 43.0°F (1974) | 2.00 in (2006) |
| September 5 | 100.0°F (1970) | 44.1°F (1974) | 0.75 in (1950) |
| September 6 | 102.9°F (1948) | 44.1°F (1974) | 1.14 in (2014) |
| September 7 | 100.0°F (2000) | 46.0°F (1952) | 1.10 in (1975) |
| September 8 | 100.9°F (2023) | 48.0°F (1952) | 1.32 in (1995) |
| September 9 | 104.0°F (2023) | 39.0°F (2020) | 1.25 in (1949) |
| September 10 | 98.1°F (1970) | 37.9°F (2020) | 2.75 in (1969) |
| September 11 | 102.0°F (2000) | 37.9°F (2020) | 1.17 in (2007) |
| September 12 | 100.0°F (1984) | 46.0°F (1968) | 2.11 in (2008) |
| September 13 | 96.1°F (1962) | 42.1°F (1959) | 1.00 in (1933) |
| September 14 | 97.0°F (1960) | 42.1°F (1968) | 1.84 in (1995) |
| September 15 | 99.0°F (1965) | 43.0°F (1947) | 2.82 in (1999) |
| September 16 | 102.0°F (1956) | 39.0°F (1951) | 1.08 in (2023) |
| September 17 | 100.0°F (1997) | 39.0°F (1951) | 0.78 in (2010) |
| September 18 | 98.1°F (1997) | 39.9°F (1951) | 2.50 in (1950) |
| September 19 | 98.1°F (2015) | 42.1°F (1971) | 2.14 in (1982) |
| September 20 | 99.0°F (1956) | 41.0°F (1971) | 0.64 in (2014) |
| September 21 | 98.1°F (1951) | 39.0°F (1995) | 2.60 in (1985) |
| September 22 | 98.1°F (1998) | 39.0°F (1995) | 1.63 in (2019) |
| September 23 | 98.1°F (2025) | 39.9°F (1970) | 1.80 in (1974) |
| September 24 | 96.1°F (1984) | 35.1°F (1989) | 1.83 in (1974) |
| September 25 | 95.0°F (1951) | 37.9°F (2000) | 2.00 in (1932) |
| September 26 | 95.0°F (1951) | 37.9°F (2000) | 5.55 in (1958) |
| September 27 | 100.0°F (2020) | 37.0°F (1996) | 2.55 in (1958) |
| September 28 | 99.0°F (1977) | 34.0°F (1973) | 1.05 in (1984) |
| September 29 | 99.0°F (1977) | 34.0°F (1973) | 0.91 in (2012) |
| September 30 | 97.0°F (1997) | 34.0°F (1984) | 1.20 in (1932) |