September weather in St. Charles, AR
The average temperature in St. Charles in September is 74.0°F (63.0°F–84.9°F). Average precipitation: 3.02 inches.
September is a fall month in St. Charles, and is warmer than the annual average of 61.9°F. Daily temperatures swing about 21.9°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 12m. For travel, September is a comfortable month to visit.
Avg High
84.9°F
Avg Low
63.0°F
Precipitation
3.02 in
Daylight
12h 12m
September records in St. Charles
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 104.0°F (1947) | 53.1°F (1967) | 3.63 in (2017) |
| September 2 | 104.0°F (1947) | 52.0°F (1986) | 1.15 in (1989) |
| September 3 | 102.0°F (1947) | 51.1°F (1952) | 2.03 in (2008) |
| September 4 | 102.9°F (1939) | 50.0°F (1974) | 5.10 in (2008) |
| September 5 | 104.0°F (1947) | 50.0°F (1974) | 3.47 in (2024) |
| September 6 | 104.0°F (1947) | 52.0°F (1950) | 1.86 in (1977) |
| September 7 | 105.1°F (1947) | 48.0°F (1988) | 0.75 in (1943) |
| September 8 | 102.9°F (1947) | 48.9°F (1988) | 0.79 in (1967) |
| September 9 | 100.9°F (1955) | 51.1°F (1944) | 1.40 in (1972) |
| September 10 | 100.0°F (1980) | 50.0°F (1943) | 2.66 in (1960) |
| September 11 | 96.1°F (1939) | 45.0°F (1940) | 5.98 in (1965) |
| September 12 | 98.1°F (1939) | 44.1°F (1940) | 1.11 in (1944) |
| September 13 | 100.9°F (1936) | 45.0°F (1940) | 1.81 in (1982) |
| September 14 | 102.0°F (1936) | 45.0°F (1964) | 2.20 in (2009) |
| September 15 | 100.0°F (1936) | 51.1°F (1964) | 0.75 in (1966) |
| September 16 | 100.0°F (1954) | 45.0°F (1961) | 1.98 in (1950) |
| September 17 | 100.9°F (1980) | 46.9°F (2000) | 2.31 in (1994) |
| September 18 | 98.1°F (1953) | 46.9°F (1981) | 4.81 in (1952) |
| September 19 | 98.1°F (2005) | 45.0°F (1981) | 1.15 in (1953) |
| September 20 | 100.9°F (2005) | 34.0°F (2008) | 2.56 in (1958) |
| September 21 | 100.9°F (2005) | 39.0°F (2008) | 4.00 in (1983) |
| September 22 | 100.9°F (2005) | 43.0°F (1983) | 3.25 in (1957) |
| September 23 | 97.0°F (2005) | 41.0°F (1989) | 1.74 in (2020) |
| September 24 | 96.1°F (1988) | 33.1°F (2008) | 4.50 in (1997) |
| September 25 | 93.9°F (1931) | 33.1°F (2008) | 5.50 in (2005) |
| September 26 | 95.0°F (1954) | 42.1°F (1975) | 3.16 in (1938) |
| September 27 | 97.0°F (1939) | 37.9°F (1942) | 4.40 in (1959) |
| September 28 | 98.1°F (1954) | 39.0°F (1942) | 3.85 in (1980) |
| September 29 | 96.1°F (1953) | 34.0°F (1967) | 1.72 in (1977) |
| September 30 | 98.1°F (1953) | 34.0°F (1967) | 1.88 in (1989) |