September weather in Knollwood, TX
The average temperature in Knollwood in September is 75.8°F (66.1°F–85.4°F). Average precipitation: 3.43 inches.
September is a fall month in Knollwood, and is warmer than the annual average of 63.6°F. Daily temperatures swing about 19.3°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
85.4°F
Avg Low
66.1°F
Precipitation
3.43 in
Daylight
12h 12m
September records in Knollwood
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 106.0°F (1951) | 57.0°F (1915) | 4.60 in (2020) |
| September 2 | 107.1°F (1951) | 57.0°F (1987) | 2.24 in (1962) |
| September 3 | 107.1°F (1951) | 53.1°F (1974) | 1.41 in (1981) |
| September 4 | 107.1°F (1951) | 51.1°F (1974) | 1.70 in (2001) |
| September 5 | 104.0°F (1951) | 48.0°F (1974) | 2.93 in (1967) |
| September 6 | 104.0°F (1947) | 46.9°F (1974) | 4.71 in (1973) |
| September 7 | 106.0°F (2023) | 50.0°F (1974) | 2.23 in (1962) |
| September 8 | 100.9°F (1998) | 52.0°F (1974) | 4.05 in (1929) |
| September 9 | 100.9°F (1936) | 48.9°F (1944) | 2.00 in (1920) |
| September 10 | 102.0°F (1936) | 50.0°F (1944) | 1.37 in (1992) |
| September 11 | 100.9°F (1930) | 46.9°F (1948) | 2.00 in (2003) |
| September 12 | 102.0°F (1930) | 46.9°F (1948) | 3.10 in (2014) |
| September 13 | 104.0°F (2011) | 50.0°F (1902) | 2.65 in (1961) |
| September 14 | 100.9°F (1965) | 50.0°F (1975) | 2.90 in (1925) |
| September 15 | 100.9°F (1953) | 48.9°F (1993) | 1.95 in (1982) |
| September 16 | 106.0°F (1956) | 44.1°F (1979) | 1.95 in (1964) |
| September 17 | 106.0°F (1956) | 46.0°F (1903) | 2.80 in (1964) |
| September 18 | 99.0°F (1960) | 46.0°F (1981) | 1.83 in (1970) |
| September 19 | 99.0°F (1956) | 42.1°F (1981) | 1.80 in (1995) |
| September 20 | 100.0°F (1960) | 42.1°F (1981) | 1.82 in (1965) |
| September 21 | 102.0°F (1953) | 44.1°F (1942) | 3.00 in (2018) |
| September 22 | 100.0°F (1956) | 39.9°F (1983) | 5.60 in (2018) |
| September 23 | 97.0°F (1956) | 39.9°F (1983) | 2.79 in (1972) |
| September 24 | 97.0°F (1931) | 45.0°F (1975) | 3.35 in (2000) |
| September 25 | 99.0°F (1931) | 43.0°F (1989) | 2.13 in (1974) |
| September 26 | 100.9°F (1977) | 39.0°F (1975) | 2.64 in (1960) |
| September 27 | 100.0°F (1977) | 36.0°F (1942) | 5.13 in (1936) |
| September 28 | 98.1°F (1959) | 37.9°F (1942) | 4.26 in (1980) |
| September 29 | 102.9°F (1953) | 41.0°F (1967) | 3.53 in (1980) |
| September 30 | 100.0°F (1953) | 39.0°F (1942) | 2.00 in (1954) |