September weather in Mankato, KS
The average temperature in Mankato in September is 66.0°F (52.7°F–79.3°F). Average precipitation: 2.38 inches.
September is a fall month in Mankato, and is warmer than the annual average of 51.7°F. Daily temperatures swing about 26.6°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
79.3°F
Avg Low
52.7°F
Precipitation
2.38 in
Daylight
12h 15m
September records in Mankato
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 104.0°F (1990) | 35.1°F (1893) | 0.83 in (1971) |
| September 2 | 102.9°F (1975) | 44.1°F (1974) | 1.30 in (1992) |
| September 3 | 108.0°F (2000) | 36.0°F (1974) | 2.05 in (1973) |
| September 4 | 102.9°F (2000) | 41.0°F (1974) | 2.68 in (1965) |
| September 5 | 100.9°F (1959) | 42.1°F (1974) | 1.70 in (1969) |
| September 6 | 102.9°F (1959) | 46.9°F (1909) | 2.20 in (1986) |
| September 7 | 104.0°F (1959) | 46.9°F (1993) | 0.90 in (1963) |
| September 8 | 102.0°F (1971) | 45.0°F (1986) | 0.75 in (1911) |
| September 9 | 100.0°F (1983) | 43.0°F (1962) | 1.16 in (1989) |
| September 10 | 99.0°F (1983) | 39.9°F (1962) | 1.44 in (1963) |
| September 11 | 100.0°F (2000) | 42.1°F (1959) | 3.57 in (2003) |
| September 12 | 100.9°F (1911) | 39.0°F (1975) | 2.90 in (1961) |
| September 13 | 107.1°F (1911) | 34.0°F (1974) | 1.95 in (1909) |
| September 14 | 99.0°F (2000) | 39.0°F (1961) | 5.85 in (1941) |
| September 15 | 93.9°F (1994) | 33.1°F (1993) | 0.70 in (1988) |
| September 16 | 93.9°F (1910) | 33.1°F (1993) | 1.80 in (1968) |
| September 17 | 99.0°F (1911) | 32.0°F (1981) | 0.88 in (1968) |
| September 18 | 98.1°F (1910) | 35.1°F (1981) | 4.08 in (1978) |
| September 19 | 100.0°F (2000) | 33.1°F (1991) | 2.32 in (1993) |
| September 20 | 97.0°F (1980) | 34.0°F (1983) | 1.03 in (1983) |
| September 21 | 91.9°F (1970) | 30.9°F (1982) | 1.90 in (1963) |
| September 22 | 93.9°F (1980) | 27.0°F (1995) | 1.95 in (2006) |
| September 23 | 90.0°F (1979) | 26.1°F (1995) | 1.60 in (1963) |
| September 24 | 91.0°F (1984) | 33.1°F (1965) | 1.58 in (1960) |
| September 25 | 95.0°F (1966) | 33.1°F (1893) | 0.42 in (1981) |
| September 26 | 100.0°F (1998) | 28.9°F (1984) | 2.09 in (1973) |
| September 27 | 96.1°F (1911) | 32.0°F (1984) | 1.56 in (1973) |
| September 28 | 91.0°F (1911) | 30.9°F (1984) | 2.06 in (1973) |
| September 29 | 91.0°F (1969) | 21.9°F (1984) | 2.15 in (1986) |
| September 30 | 96.1°F (1994) | 25.0°F (1984) | 1.73 in (1965) |