September weather in Valier, MT
The average temperature in Valier in September is 57.3°F (43.1°F–71.6°F). Average precipitation: 1.25 inches.
September is a fall month in Valier, and is warmer than the annual average of 44.1°F. Daily temperatures swing about 28.5°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 20m. For travel, September is a comfortable month to visit.
Avg High
71.6°F
Avg Low
43.1°F
Precipitation
1.25 in
Daylight
12h 20m
September records in Valier
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (1967) | 30.9°F (1930) | 1.04 in (1918) |
| September 2 | 91.9°F (1967) | 30.0°F (1974) | 0.83 in (1915) |
| September 3 | 99.0°F (1950) | 25.0°F (1962) | 0.72 in (1916) |
| September 4 | 91.9°F (2003) | 28.0°F (1929) | 1.87 in (1911) |
| September 5 | 93.9°F (1967) | 28.9°F (1956) | 1.10 in (1943) |
| September 6 | 93.0°F (1967) | 24.1°F (1929) | 1.05 in (1985) |
| September 7 | 91.9°F (1998) | 28.9°F (1929) | 0.53 in (2001) |
| September 8 | 91.0°F (1981) | 28.0°F (1962) | 0.78 in (1934) |
| September 9 | 90.0°F (1981) | 28.0°F (1921) | 1.14 in (1986) |
| September 10 | 88.0°F (1968) | 5.0°F (1938) | 0.60 in (1926) |
| September 11 | 89.1°F (1981) | 23.0°F (1989) | 0.70 in (1988) |
| September 12 | 88.0°F (1953) | 23.0°F (1949) | 1.92 in (1985) |
| September 13 | 84.9°F (1923) | 21.0°F (1915) | 0.35 in (1927) |
| September 14 | 89.1°F (1948) | 19.0°F (1970) | 0.67 in (2006) |
| September 15 | 93.0°F (2000) | 27.0°F (1943) | 0.38 in (1980) |
| September 16 | 89.1°F (2000) | 24.1°F (1912) | 0.75 in (1963) |
| September 17 | 88.0°F (1981) | 23.0°F (1965) | 0.80 in (1947) |
| September 18 | 91.0°F (1981) | 21.9°F (1957) | 1.24 in (1957) |
| September 19 | 90.0°F (1938) | 21.0°F (1957) | 0.83 in (2007) |
| September 20 | 95.0°F (1939) | 21.9°F (1925) | 1.62 in (1968) |
| September 21 | 89.1°F (1938) | 21.0°F (1995) | 1.04 in (1940) |
| September 22 | 90.0°F (1938) | 19.9°F (1934) | 1.00 in (1940) |
| September 23 | 91.0°F (2009) | 15.1°F (1934) | 1.18 in (2007) |
| September 24 | 91.9°F (2009) | 6.1°F (1926) | 1.60 in (1917) |
| September 25 | 90.0°F (2001) | 3.9°F (1934) | 0.21 in (1918) |
| September 26 | 89.1°F (2001) | 16.0°F (1934) | 0.75 in (1999) |
| September 27 | 86.0°F (1943) | 21.9°F (1961) | 1.22 in (1982) |
| September 28 | 86.0°F (1967) | 19.9°F (1984) | 0.76 in (1954) |
| September 29 | 88.0°F (1967) | 8.1°F (1919) | 0.68 in (1925) |
| September 30 | 89.1°F (1992) | 19.9°F (1925) | 0.67 in (1977) |