September weather in Crystal City, MO
The average temperature in Crystal City in September is 68.9°F (57.1°F–80.6°F). Average precipitation: 3.38 inches.
September is a fall month in Crystal City, and is warmer than the annual average of 55.7°F. Daily temperatures swing about 23.5°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
80.6°F
Avg Low
57.1°F
Precipitation
3.38 in
Daylight
12h 14m
September records in Crystal City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (2011) | 44.1°F (1967) | 2.08 in (1981) |
| September 2 | 102.0°F (2011) | 42.1°F (1967) | 1.68 in (1980) |
| September 3 | 98.1°F (2000) | 43.0°F (1967) | 1.85 in (1993) |
| September 4 | 100.0°F (2011) | 41.0°F (1974) | 1.88 in (1965) |
| September 5 | 99.0°F (1960) | 41.0°F (1974) | 2.47 in (2008) |
| September 6 | 100.0°F (1960) | 45.0°F (1968) | 1.80 in (2014) |
| September 7 | 100.0°F (1990) | 43.0°F (1976) | 2.40 in (1969) |
| September 8 | 100.0°F (1960) | 42.1°F (1966) | 6.20 in (2018) |
| September 9 | 99.0°F (1980) | 44.1°F (1963) | 2.30 in (1973) |
| September 10 | 100.9°F (2013) | 37.9°F (1976) | 2.40 in (2010) |
| September 11 | 100.9°F (2013) | 36.0°F (1976) | 0.89 in (1965) |
| September 12 | 98.1°F (1980) | 37.9°F (1968) | 0.55 in (2000) |
| September 13 | 99.0°F (1962) | 37.9°F (1964) | 0.88 in (1999) |
| September 14 | 105.1°F (1971) | 37.9°F (1964) | 1.65 in (1989) |
| September 15 | 95.0°F (1991) | 37.0°F (1979) | 2.14 in (1993) |
| September 16 | 96.1°F (1991) | 36.0°F (1966) | 0.89 in (1996) |
| September 17 | 98.1°F (1978) | 37.9°F (1966) | 3.50 in (2016) |
| September 18 | 99.0°F (1978) | 37.9°F (1981) | 1.31 in (1975) |
| September 19 | 102.0°F (1978) | 37.9°F (1973) | 1.29 in (1971) |
| September 20 | 100.0°F (1978) | 39.0°F (1962) | 1.12 in (2005) |
| September 21 | 98.1°F (2022) | 33.1°F (1962) | 1.21 in (1964) |
| September 22 | 96.1°F (2022) | 33.1°F (1983) | 1.54 in (1970) |
| September 23 | 95.0°F (2017) | 30.0°F (1983) | 2.80 in (1993) |
| September 24 | 91.9°F (2017) | 30.0°F (1983) | 1.62 in (1962) |
| September 25 | 93.0°F (2017) | 33.1°F (1989) | 1.93 in (1962) |
| September 26 | 91.9°F (1971) | 35.1°F (1975) | 1.25 in (1996) |
| September 27 | 98.1°F (2000) | 34.0°F (1975) | 1.25 in (1981) |
| September 28 | 93.9°F (1971) | 36.0°F (1962) | 1.71 in (1974) |
| September 29 | 93.9°F (1971) | 35.1°F (1967) | 1.30 in (2005) |
| September 30 | 93.9°F (1971) | 33.1°F (1963) | 0.85 in (1972) |