September weather in Stewartville, MN
The average temperature in Stewartville in September is 61.1°F (50.4°F–71.8°F). Average precipitation: 3.60 inches.
September is a fall month in Stewartville, and is warmer than the annual average of 44.8°F. Daily temperatures swing about 21.4°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 17m. For travel, September is one of the best months of the year to visit.
Avg High
71.8°F
Avg Low
50.4°F
Precipitation
3.60 in
Daylight
12h 17m
September records in Stewartville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.9°F (1937) | 34.0°F (1909) | 2.21 in (1942) |
| September 2 | 93.9°F (1929) | 35.1°F (1909) | 1.69 in (2019) |
| September 3 | 93.9°F (1937) | 33.1°F (1974) | 1.17 in (1968) |
| September 4 | 95.0°F (1893) | 36.0°F (1974) | 3.32 in (2018) |
| September 5 | 93.9°F (1913) | 34.0°F (1918) | 2.39 in (1946) |
| September 6 | 100.0°F (1913) | 36.0°F (1932) | 1.27 in (1938) |
| September 7 | 96.1°F (1913) | 34.0°F (1934) | 2.39 in (1964) |
| September 8 | 97.0°F (1931) | 37.0°F (1995) | 1.09 in (1985) |
| September 9 | 97.0°F (1955) | 37.0°F (1969) | 1.54 in (1971) |
| September 10 | 98.1°F (1931) | 28.9°F (1917) | 3.11 in (1938) |
| September 11 | 93.9°F (1931) | 24.1°F (1917) | 1.47 in (1942) |
| September 12 | 93.9°F (1948) | 30.0°F (1955) | 5.98 in (1978) |
| September 13 | 93.0°F (1908) | 32.0°F (1953) | 1.60 in (1993) |
| September 14 | 95.0°F (1939) | 33.1°F (1929) | 4.04 in (2004) |
| September 15 | 96.1°F (1939) | 30.9°F (2011) | 3.17 in (1941) |
| September 16 | 96.1°F (1939) | 28.0°F (1937) | 1.60 in (1992) |
| September 17 | 93.9°F (1955) | 28.9°F (1916) | 2.36 in (1942) |
| September 18 | 93.0°F (1955) | 26.1°F (1929) | 1.26 in (2003) |
| September 19 | 91.9°F (1908) | 30.0°F (1929) | 2.51 in (1983) |
| September 20 | 91.9°F (1908) | 28.0°F (1991) | 1.80 in (2018) |
| September 21 | 93.9°F (1908) | 27.0°F (1918) | 3.60 in (2016) |
| September 22 | 95.0°F (1908) | 24.1°F (1974) | 3.28 in (2025) |
| September 23 | 91.9°F (1937) | 28.0°F (1989) | 4.34 in (2010) |
| September 24 | 89.1°F (2017) | 27.0°F (1942) | 2.49 in (2007) |
| September 25 | 89.1°F (1956) | 26.1°F (1893) | 3.17 in (2005) |
| September 26 | 86.0°F (1908) | 26.1°F (1893) | 1.47 in (1973) |
| September 27 | 86.0°F (1943) | 28.0°F (1942) | 1.34 in (1965) |
| September 28 | 82.9°F (1952) | 21.9°F (1893) | 0.90 in (1972) |
| September 29 | 86.0°F (1953) | 23.0°F (1967) | 1.23 in (1973) |
| September 30 | 90.0°F (2023) | 24.1°F (1939) | 1.46 in (2007) |