September weather in Kalispell, MT

The average temperature in Kalispell in September is 54.3°F (38.3°F–70.4°F). Average precipitation: 1.17 inches.

September is a fall month in Kalispell, and is warmer than the annual average of 43.1°F. Daily temperatures swing about 32.1°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 20m. For travel, September is a comfortable month to visit.

Avg High
70.4°F
Avg Low
38.3°F
Precipitation
1.17 in
Daylight
12h 20m

September records in Kalispell

Date Record High Record Low Record Precip
September 1 99.0°F (1967) 32.0°F (1999) 2.05 in (1896)
September 2 96.1°F (1998) 28.9°F (1959) 0.48 in (1980)
September 3 97.0°F (1988) 30.9°F (1974) 1.26 in (1911)
September 4 93.0°F (1998) 27.0°F (1962) 0.33 in (1940)
September 5 93.9°F (1967) 30.0°F (1956) 0.64 in (1936)
September 6 93.0°F (1998) 27.0°F (1969) 0.95 in (1927)
September 7 93.0°F (2022) 27.0°F (1992) 0.27 in (1922)
September 8 93.9°F (1958) 23.2°F (2020) 0.89 in (1900)
September 9 91.9°F (1969) 26.1°F (1959) 0.77 in (2019)
September 10 91.9°F (1969) 27.0°F (1972) 1.14 in (2005)
September 11 91.9°F (1958) 27.0°F (1921) 0.70 in (1896)
September 12 90.0°F (1959) 23.2°F (2014) 1.14 in (1985)
September 13 86.0°F (1943) 23.0°F (1970) 1.27 in (1899)
September 14 86.0°F (2013) 16.0°F (1970) 0.50 in (1968)
September 15 89.1°F (1998) 19.9°F (1970) 0.90 in (1959)
September 16 88.0°F (2009) 23.0°F (1973) 0.49 in (1977)
September 17 89.1°F (1981) 21.9°F (1973) 0.85 in (1985)
September 18 90.0°F (1981) 21.9°F (1971) 1.17 in (1908)
September 19 84.9°F (2008) 23.0°F (1983) 0.60 in (1925)
September 20 84.9°F (1922) 21.0°F (1934) 0.50 in (1955)
September 21 87.1°F (1967) 21.9°F (1971) 0.87 in (2008)
September 22 84.0°F (1905) 21.9°F (2000) 0.80 in (1930)
September 23 87.1°F (2011) 12.9°F (1926) 1.21 in (1930)
September 24 89.1°F (2014) 7.0°F (1926) 0.40 in (1941)
September 25 88.0°F (2001) 17.1°F (1926) 0.68 in (1998)
September 26 87.1°F (1952) 24.1°F (1900) 0.56 in (1987)
September 27 86.0°F (1957) 24.1°F (1985) 0.55 in (1959)
September 28 84.9°F (1967) 18.0°F (1985) 0.55 in (1982)
September 29 82.0°F (1967) 19.0°F (1985) 0.64 in (1909)
September 30 82.0°F (1963) 21.9°F (1971) 0.43 in (2025)

Other months in Kalispell