September weather in LaCrosse, WA
The average temperature in LaCrosse in September is 61.2°F (44.0°F–78.5°F). Average precipitation: 0.50 inches.
September is a fall month in LaCrosse, and is warmer than the annual average of 50.1°F. Daily temperatures swing about 34.5°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
78.5°F
Avg Low
44.0°F
Precipitation
0.50 in
Daylight
12h 19m
September records in LaCrosse
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (1950) | 32.0°F (1914) | 0.66 in (1971) |
| September 2 | 104.0°F (1950) | 30.9°F (1999) | 0.55 in (1936) |
| September 3 | 102.9°F (2003) | 30.9°F (1929) | 0.51 in (1916) |
| September 4 | 100.0°F (1924) | 28.9°F (1956) | 0.38 in (1960) |
| September 5 | 99.0°F (1955) | 32.0°F (1947) | 0.96 in (1911) |
| September 6 | 100.0°F (1944) | 30.0°F (1913) | 1.10 in (1927) |
| September 7 | 100.0°F (1924) | 28.9°F (1939) | 0.54 in (1947) |
| September 8 | 102.0°F (2011) | 26.1°F (1962) | 0.40 in (2019) |
| September 9 | 98.1°F (2011) | 30.0°F (1964) | 0.26 in (1952) |
| September 10 | 98.1°F (2011) | 25.0°F (1913) | 0.59 in (2000) |
| September 11 | 100.0°F (1953) | 27.0°F (1910) | 1.14 in (1927) |
| September 12 | 98.1°F (1937) | 30.9°F (1951) | 1.14 in (1915) |
| September 13 | 99.0°F (1948) | 27.0°F (1921) | 0.75 in (1980) |
| September 14 | 96.1°F (2000) | 25.0°F (1970) | 0.64 in (1927) |
| September 15 | 98.1°F (2013) | 25.0°F (1970) | 0.65 in (1949) |
| September 16 | 97.0°F (1981) | 26.1°F (1971) | 0.72 in (1947) |
| September 17 | 102.0°F (1981) | 23.0°F (1965) | 0.35 in (2013) |
| September 18 | 98.1°F (1938) | 23.0°F (1965) | 1.28 in (1968) |
| September 19 | 93.9°F (1938) | 19.9°F (1957) | 0.57 in (2010) |
| September 20 | 100.9°F (1939) | 25.0°F (1928) | 0.73 in (1971) |
| September 21 | 97.0°F (1967) | 25.0°F (1932) | 0.28 in (1945) |
| September 22 | 98.1°F (1966) | 25.0°F (2017) | 1.15 in (1945) |
| September 23 | 96.1°F (2001) | 24.1°F (1911) | 0.29 in (1945) |
| September 24 | 100.0°F (2011) | 19.9°F (1926) | 0.59 in (1992) |
| September 25 | 99.0°F (1952) | 15.1°F (1934) | 0.14 in (1924) |
| September 26 | 93.0°F (1952) | 19.9°F (1908) | 0.79 in (1947) |
| September 27 | 95.0°F (1963) | 25.0°F (1972) | 0.38 in (1981) |
| September 28 | 95.0°F (1963) | 19.9°F (1983) | 0.49 in (1962) |
| September 29 | 91.0°F (1989) | 19.0°F (1983) | 0.84 in (1930) |
| September 30 | 90.0°F (1992) | 21.9°F (1958) | 0.31 in (1912) |