October weather in Boulder, MT
The average temperature in Boulder in October is 42.6°F (27.7°F–57.4°F). Average precipitation: 0.64 inches.
October is a fall month in Boulder, and is warmer than the annual average of 42.6°F. Daily temperatures swing about 29.7°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 10h 39m. For travel, October is cool.
Avg High
57.4°F
Avg Low
27.7°F
Precipitation
0.64 in
Daylight
10h 39m
October records in Boulder
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 84.0°F (1992) | 14.0°F (1950) | 0.45 in (2022) |
| October 2 | 87.1°F (1992) | 12.9°F (2002) | 0.40 in (2005) |
| October 3 | 82.9°F (1992) | 14.0°F (1999) | 0.75 in (1967) |
| October 4 | 84.9°F (2010) | 9.0°F (1985) | 0.64 in (1992) |
| October 5 | 89.1°F (1988) | 10.9°F (2001) | 0.40 in (2007) |
| October 6 | 79.0°F (1960) | 10.9°F (1974) | 0.54 in (1963) |
| October 7 | 80.1°F (1979) | 12.0°F (2000) | 0.61 in (1985) |
| October 8 | 82.0°F (1980) | 12.0°F (1985) | 0.35 in (1975) |
| October 9 | 79.0°F (1953) | -5.1°F (1985) | 0.22 in (2006) |
| October 10 | 82.9°F (2015) | 7.0°F (1987) | 0.20 in (2008) |
| October 11 | 82.0°F (2015) | 9.0°F (2009) | 0.67 in (1997) |
| October 12 | 78.1°F (1950) | 1.9°F (2009) | 0.59 in (2000) |
| October 13 | 78.1°F (1964) | 5.0°F (1969) | 0.42 in (2000) |
| October 14 | 79.0°F (1958) | 5.0°F (1969) | 0.35 in (1962) |
| October 15 | 79.0°F (2024) | 12.9°F (1960) | 0.55 in (1980) |
| October 16 | 79.0°F (1974) | 8.1°F (1970) | 0.35 in (2003) |
| October 17 | 77.0°F (1955) | 10.9°F (1948) | 0.29 in (1988) |
| October 18 | 77.0°F (1958) | 15.1°F (1989) | 1.20 in (2020) |
| October 19 | 79.0°F (2003) | 10.9°F (1969) | 0.49 in (2009) |
| October 20 | 77.0°F (2023) | 10.9°F (1984) | 0.42 in (2006) |
| October 21 | 77.0°F (2003) | 10.0°F (1984) | 0.50 in (1974) |
| October 22 | 78.1°F (2003) | 10.9°F (1957) | 0.41 in (1975) |
| October 23 | 75.9°F (1952) | 8.1°F (1957) | 0.40 in (1967) |
| October 24 | 73.9°F (1959) | 8.1°F (2002) | 0.24 in (1957) |
| October 25 | 78.1°F (1990) | 10.9°F (2002) | 0.25 in (1969) |
| October 26 | 79.0°F (1988) | 9.0°F (2002) | 0.30 in (2019) |
| October 27 | 73.0°F (1983) | 3.0°F (1996) | 0.42 in (1956) |
| October 28 | 73.9°F (1968) | -13.0°F (2023) | 0.15 in (1993) |
| October 29 | 72.0°F (1968) | -9.9°F (1971) | 0.23 in (1960) |
| October 30 | 68.0°F (2007) | -14.1°F (1991) | 0.21 in (1992) |
| October 31 | 68.0°F (1988) | -13.0°F (2002) | 0.67 in (2016) |