September weather in Whitefish, MT
The average temperature in Whitefish in September is 54.4°F (40.2°F–68.7°F). Average precipitation: 1.25 inches.
September is a fall month in Whitefish, and is warmer than the annual average of 42.5°F. Daily temperatures swing about 28.5°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
68.7°F
Avg Low
40.2°F
Precipitation
1.25 in
Daylight
12h 20m
September records in Whitefish
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 90.0°F (1991) | 30.9°F (2006) | 0.93 in (1961) |
| September 2 | 90.0°F (1998) | 35.1°F (2006) | 0.63 in (1964) |
| September 3 | 93.9°F (1998) | 35.1°F (2007) | 0.82 in (1946) |
| September 4 | 93.0°F (1988) | 36.0°F (1999) | 0.50 in (1960) |
| September 5 | 93.9°F (1998) | 37.0°F (1994) | 0.42 in (1945) |
| September 6 | 93.0°F (2003) | 34.0°F (1992) | 0.49 in (2012) |
| September 7 | 91.9°F (1998) | 28.0°F (1992) | 0.58 in (1962) |
| September 8 | 90.0°F (2006) | 28.0°F (2008) | 0.37 in (1978) |
| September 9 | 89.1°F (2006) | 30.0°F (1989) | 0.88 in (2003) |
| September 10 | 91.9°F (2006) | 32.0°F (1989) | 0.71 in (2005) |
| September 11 | 84.9°F (1990) | 28.0°F (1989) | 1.31 in (2005) |
| September 12 | 88.0°F (2011) | 27.0°F (2008) | 1.00 in (1968) |
| September 13 | 82.9°F (2002) | 30.9°F (1988) | 0.35 in (1963) |
| September 14 | 86.0°F (2013) | 33.1°F (1992) | 1.00 in (1965) |
| September 15 | 82.9°F (2000) | 30.0°F (1992) | 1.02 in (1959) |
| September 16 | 88.0°F (1998) | 34.0°F (1992) | 0.67 in (1963) |
| September 17 | 86.0°F (2009) | 28.0°F (1987) | 0.67 in (1977) |
| September 18 | 84.0°F (1998) | 28.9°F (1992) | 0.89 in (1996) |
| September 19 | 82.9°F (2008) | 30.0°F (1988) | 0.50 in (1996) |
| September 20 | 82.9°F (2008) | 30.0°F (1988) | 0.60 in (1955) |
| September 21 | 82.9°F (1994) | 23.0°F (1995) | 0.92 in (1969) |
| September 22 | 82.0°F (2012) | 24.1°F (1995) | 0.93 in (2008) |
| September 23 | 81.0°F (1999) | 19.0°F (2000) | 0.70 in (1958) |
| September 24 | 87.1°F (1997) | 25.0°F (2000) | 0.79 in (1958) |
| September 25 | 84.9°F (1994) | 24.1°F (2000) | 0.62 in (1951) |
| September 26 | 87.1°F (2001) | 26.1°F (2000) | 0.44 in (1951) |
| September 27 | 82.0°F (1989) | 24.1°F (2000) | 0.59 in (1987) |
| September 28 | 82.9°F (1994) | 28.0°F (2002) | 0.60 in (1982) |
| September 29 | 81.0°F (1994) | 28.0°F (2002) | 0.70 in (1961) |
| September 30 | 77.0°F (1996) | 28.9°F (2007) | 0.31 in (1969) |