September weather in St. Leo, MN
The average temperature in St. Leo in September is 61.6°F (50.0°F–73.2°F). Average precipitation: 2.80 inches.
September is a fall month in St. Leo, and is warmer than the annual average of 44.7°F. Daily temperatures swing about 23.2°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 18m. For travel, September is one of the best months of the year to visit.
Avg High
73.2°F
Avg Low
50.0°F
Precipitation
2.80 in
Daylight
12h 18m
September records in St. Leo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (1922) | 36.0°F (1949) | 2.04 in (1942) |
| September 2 | 96.1°F (1958) | 39.0°F (1972) | 2.44 in (1966) |
| September 3 | 98.1°F (1983) | 32.0°F (1974) | 2.00 in (2021) |
| September 4 | 100.9°F (2023) | 36.0°F (1956) | 2.52 in (1989) |
| September 5 | 102.9°F (2023) | 35.1°F (1965) | 2.14 in (2018) |
| September 6 | 97.0°F (1931) | 37.0°F (1956) | 1.94 in (1948) |
| September 7 | 99.0°F (1978) | 37.9°F (1956) | 1.32 in (1926) |
| September 8 | 104.0°F (1931) | 37.9°F (1995) | 1.05 in (1991) |
| September 9 | 102.9°F (1931) | 34.0°F (1924) | 1.70 in (1946) |
| September 10 | 106.0°F (1931) | 34.0°F (1943) | 2.25 in (1933) |
| September 11 | 98.1°F (1931) | 35.1°F (1943) | 2.35 in (1942) |
| September 12 | 95.0°F (2012) | 35.1°F (2007) | 2.19 in (2019) |
| September 13 | 96.1°F (1927) | 30.0°F (2012) | 1.62 in (2005) |
| September 14 | 93.9°F (1998) | 33.1°F (2012) | 2.30 in (1941) |
| September 15 | 98.1°F (1955) | 30.0°F (1916) | 1.32 in (2004) |
| September 16 | 93.9°F (1955) | 33.1°F (2011) | 4.15 in (1921) |
| September 17 | 96.1°F (1955) | 30.0°F (1943) | 3.35 in (1986) |
| September 18 | 93.0°F (1940) | 24.1°F (1929) | 1.28 in (1926) |
| September 19 | 95.0°F (1972) | 33.1°F (1918) | 1.36 in (1957) |
| September 20 | 95.0°F (1984) | 28.0°F (1918) | 1.70 in (1993) |
| September 21 | 98.1°F (1937) | 33.1°F (1983) | 2.07 in (1924) |
| September 22 | 98.1°F (1936) | 21.9°F (1974) | 1.15 in (1969) |
| September 23 | 96.1°F (1935) | 28.0°F (1983) | 2.15 in (2010) |
| September 24 | 93.9°F (1935) | 27.0°F (1942) | 2.89 in (1984) |
| September 25 | 90.0°F (1938) | 25.0°F (1926) | 2.85 in (1929) |
| September 26 | 91.9°F (1956) | 23.0°F (1965) | 1.28 in (1929) |
| September 27 | 97.0°F (1956) | 26.1°F (1935) | 0.85 in (1965) |
| September 28 | 89.1°F (1987) | 21.9°F (1942) | 0.32 in (1966) |
| September 29 | 89.1°F (2011) | 26.1°F (1945) | 1.05 in (1982) |
| September 30 | 91.9°F (2025) | 27.0°F (1974) | 2.04 in (1995) |