September weather in Brownsville, MN
The average temperature in Brownsville in September is 64.3°F (54.3°F–74.2°F). Average precipitation: 4.16 inches.
September is a fall month in Brownsville, and is warmer than the annual average of 48.5°F. Daily temperatures swing about 19.9°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
74.2°F
Avg Low
54.3°F
Precipitation
4.16 in
Daylight
12h 17m
September records in Brownsville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.9°F (1953) | 42.1°F (1949) | 2.96 in (1969) |
| September 2 | 91.9°F (1960) | 44.1°F (1946) | 1.50 in (1942) |
| September 3 | 93.0°F (1947) | 37.9°F (1974) | 1.31 in (2011) |
| September 4 | 95.0°F (1939) | 39.0°F (1974) | 3.12 in (2018) |
| September 5 | 93.0°F (2023) | 42.1°F (1974) | 1.60 in (1956) |
| September 6 | 91.0°F (1954) | 39.9°F (1988) | 3.37 in (1946) |
| September 7 | 97.0°F (1939) | 37.9°F (1956) | 4.80 in (2016) |
| September 8 | 97.0°F (1939) | 42.1°F (1995) | 2.25 in (2001) |
| September 9 | 95.0°F (1955) | 41.0°F (1969) | 1.76 in (2015) |
| September 10 | 90.0°F (1978) | 37.9°F (1976) | 2.98 in (1938) |
| September 11 | 91.0°F (1948) | 30.9°F (1997) | 1.06 in (2006) |
| September 12 | 91.9°F (1998) | 36.0°F (1955) | 1.65 in (1984) |
| September 13 | 89.1°F (1939) | 37.0°F (1953) | 2.39 in (2019) |
| September 14 | 93.0°F (1939) | 37.0°F (1974) | 1.75 in (1938) |
| September 15 | 93.9°F (1939) | 35.1°F (2007) | 1.84 in (1992) |
| September 16 | 93.9°F (1939) | 36.0°F (1984) | 1.61 in (1941) |
| September 17 | 91.9°F (1955) | 37.9°F (1980) | 2.11 in (1992) |
| September 18 | 90.0°F (1955) | 37.9°F (1959) | 2.25 in (1942) |
| September 19 | 91.9°F (1948) | 36.0°F (1991) | 1.28 in (1960) |
| September 20 | 88.0°F (1940) | 32.0°F (1956) | 1.89 in (1983) |
| September 21 | 89.1°F (2005) | 34.0°F (1991) | 1.19 in (1986) |
| September 22 | 93.9°F (2017) | 30.9°F (1974) | 3.68 in (2016) |
| September 23 | 91.9°F (2017) | 32.0°F (1983) | 3.16 in (2010) |
| September 24 | 90.0°F (2017) | 30.0°F (1976) | 1.37 in (1977) |
| September 25 | 84.9°F (2017) | 32.0°F (1942) | 2.50 in (1972) |
| September 26 | 86.0°F (1986) | 30.9°F (1984) | 1.70 in (1972) |
| September 27 | 84.0°F (1954) | 32.0°F (1942) | 2.30 in (1959) |
| September 28 | 86.0°F (1952) | 28.9°F (1942) | 1.34 in (1965) |
| September 29 | 87.1°F (1939) | 28.0°F (1984) | 1.25 in (1986) |
| September 30 | 86.0°F (2025) | 30.0°F (1984) | 1.80 in (1961) |