September weather in Katy, TX
The average temperature in Katy in September is °F (°F–°F). Average precipitation: 4.38 inches.
September is a fall month in Katy, and is cooler than the annual average of 0°F. Expect about 6 days with precipitation. Daylight averages about 12h 10m.
Avg High
°F
Avg Low
°F
Precipitation
4.38 in
Daylight
12h 10m
September records in Katy
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 2.86 in (1981) |
| September 2 | — | — | 3.28 in (1970) |
| September 3 | — | — | 0.85 in (1991) |
| September 4 | — | — | 2.53 in (2007) |
| September 5 | — | — | 3.80 in (1968) |
| September 6 | — | — | 4.25 in (1980) |
| September 7 | — | — | 3.05 in (2002) |
| September 8 | — | — | 1.62 in (2010) |
| September 9 | — | — | 1.54 in (2001) |
| September 10 | — | — | 7.40 in (1998) |
| September 11 | — | — | 2.57 in (1978) |
| September 12 | — | — | 5.20 in (1961) |
| September 13 | — | — | 2.52 in (2008) |
| September 14 | — | — | 5.53 in (1974) |
| September 15 | — | — | 1.48 in (1981) |
| September 16 | — | — | 1.35 in (1970) |
| September 17 | — | — | 1.86 in (1966) |
| September 18 | — | — | 2.85 in (1996) |
| September 19 | — | — | 3.60 in (2002) |
| September 20 | — | — | 5.83 in (1979) |
| September 21 | — | — | 4.60 in (1958) |
| September 22 | — | — | 4.17 in (2020) |
| September 23 | — | — | 2.29 in (2018) |
| September 24 | — | — | 1.36 in (1957) |
| September 25 | — | — | 0.60 in (1960) |
| September 26 | — | — | 1.49 in (1957) |
| September 27 | — | — | 1.07 in (2018) |
| September 28 | — | — | 1.02 in (1976) |
| September 29 | — | — | 2.18 in (1987) |
| September 30 | — | — | 1.79 in (1985) |