September weather in Rock Hill, SC
The average temperature in Rock Hill in September is 73.3°F (63.0°F–83.5°F). Average precipitation: 3.56 inches.
September is a fall month in Rock Hill, and is warmer than the annual average of 62.1°F. Daily temperatures swing about 20.5°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 12m. For travel, September is a comfortable month to visit.
Avg High
83.5°F
Avg Low
63.0°F
Precipitation
3.56 in
Daylight
12h 12m
September records in Rock Hill
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1924) | 54.0°F (1934) | 1.46 in (1994) |
| September 2 | 100.0°F (1912) | 50.0°F (1967) | 2.06 in (2000) |
| September 3 | 100.9°F (1925) | 50.0°F (1967) | 2.92 in (2000) |
| September 4 | 104.0°F (1925) | 48.0°F (1967) | 2.44 in (1998) |
| September 5 | 102.9°F (1925) | 53.1°F (1997) | 2.65 in (1979) |
| September 6 | 100.9°F (1954) | 51.1°F (1924) | 3.04 in (1974) |
| September 7 | 106.0°F (1925) | 48.9°F (1924) | 2.70 in (2004) |
| September 8 | 105.1°F (1925) | 50.0°F (1967) | 1.67 in (2004) |
| September 9 | 100.9°F (1939) | 50.0°F (1953) | 2.09 in (1988) |
| September 10 | 100.0°F (1939) | 46.0°F (1949) | 3.11 in (1987) |
| September 11 | 96.1°F (1925) | 45.0°F (1949) | 0.85 in (1914) |
| September 12 | 98.1°F (1934) | 44.1°F (1917) | 1.98 in (1987) |
| September 13 | 95.0°F (1900) | 48.0°F (1967) | 2.05 in (1964) |
| September 14 | 96.1°F (1925) | 45.0°F (1985) | 2.59 in (1973) |
| September 15 | 98.1°F (1927) | 46.0°F (1902) | 2.43 in (1976) |
| September 16 | 99.0°F (1921) | 48.0°F (1902) | 5.64 in (1962) |
| September 17 | 98.1°F (1921) | 46.9°F (1961) | 3.36 in (1928) |
| September 18 | 98.1°F (1921) | 48.0°F (1961) | 2.05 in (1901) |
| September 19 | 98.1°F (1925) | 46.0°F (1984) | 3.32 in (1966) |
| September 20 | 100.0°F (1925) | 43.0°F (1929) | 2.30 in (1943) |
| September 21 | 98.1°F (1925) | 42.1°F (1918) | 2.15 in (1998) |
| September 22 | 96.1°F (1933) | 42.1°F (1918) | 3.90 in (1989) |
| September 23 | 96.1°F (2022) | 41.0°F (1983) | 4.46 in (1975) |
| September 24 | 96.1°F (1930) | 42.1°F (1949) | 3.00 in (1947) |
| September 25 | 96.1°F (1933) | 41.0°F (1927) | 1.62 in (1980) |
| September 26 | 96.1°F (2019) | 43.0°F (1950) | 2.51 in (1991) |
| September 27 | 96.1°F (1900) | 42.1°F (1914) | 5.85 in (2024) |
| September 28 | 96.1°F (1939) | 45.0°F (1909) | 2.85 in (1963) |
| September 29 | 96.1°F (2019) | 39.9°F (1942) | 2.97 in (1959) |
| September 30 | 93.9°F (1926) | 37.0°F (1967) | 3.41 in (1979) |