October weather in Troy, MT
The average temperature in Troy in October is 45.6°F (34.6°F–56.5°F). Average precipitation: 2.42 inches.
October is a fall month in Troy, and is cooler than the annual average of 46.8°F. Daily temperatures swing about 21.9°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 10h 32m. For travel, October is cool.
Avg High
56.5°F
Avg Low
34.6°F
Precipitation
2.42 in
Daylight
10h 32m
October records in Troy
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 80.1°F (1963) | 26.1°F (2019) | 1.03 in (2005) |
| October 2 | 80.1°F (1987) | 25.0°F (1968) | 0.63 in (2005) |
| October 3 | 81.0°F (2003) | 19.9°F (1979) | 0.69 in (1967) |
| October 4 | 81.0°F (1987) | 19.0°F (1979) | 0.43 in (1997) |
| October 5 | 82.0°F (2020) | 21.9°F (2001) | 0.57 in (1997) |
| October 6 | 84.0°F (2003) | 19.0°F (1974) | 0.40 in (1968) |
| October 7 | 81.0°F (2020) | 21.0°F (2009) | 0.67 in (1993) |
| October 8 | 78.1°F (1979) | 18.0°F (1985) | 0.50 in (1975) |
| October 9 | 77.0°F (2015) | 17.1°F (1985) | 0.38 in (1981) |
| October 10 | 79.0°F (2015) | 10.9°F (2009) | 0.61 in (1995) |
| October 11 | 78.1°F (1991) | 10.0°F (2009) | 0.90 in (1995) |
| October 12 | 75.9°F (1991) | 6.1°F (2009) | 0.70 in (1962) |
| October 13 | 78.1°F (1991) | 19.0°F (1969) | 0.74 in (1962) |
| October 14 | 73.9°F (1976) | 19.9°F (1987) | 1.07 in (2016) |
| October 15 | 78.1°F (2004) | 19.0°F (1970) | 0.32 in (1980) |
| October 16 | 82.9°F (1991) | 19.9°F (1969) | 0.23 in (2024) |
| October 17 | 72.0°F (1982) | 16.0°F (1971) | 0.50 in (2004) |
| October 18 | 69.1°F (1973) | 16.0°F (1969) | 0.35 in (2019) |
| October 19 | 72.0°F (1973) | 18.0°F (1966) | 0.64 in (2007) |
| October 20 | 75.0°F (2024) | 18.0°F (1984) | 0.36 in (1971) |
| October 21 | 73.9°F (2003) | 17.1°F (1984) | 1.18 in (2003) |
| October 22 | 68.0°F (1992) | 14.0°F (2002) | 0.88 in (1963) |
| October 23 | 70.0°F (1992) | 10.0°F (2002) | 0.74 in (1985) |
| October 24 | 68.0°F (2019) | 3.9°F (2020) | 0.47 in (1985) |
| October 25 | 68.0°F (2007) | 8.1°F (2002) | 0.88 in (1985) |
| October 26 | 70.0°F (1966) | 12.9°F (2002) | 0.65 in (1995) |
| October 27 | 64.0°F (1990) | 18.0°F (2008) | 0.95 in (1984) |
| October 28 | 64.0°F (2006) | 3.0°F (2019) | 0.66 in (1999) |
| October 29 | 66.9°F (2006) | -2.9°F (2002) | 1.45 in (2021) |
| October 30 | 66.9°F (2006) | 6.1°F (2002) | 0.48 in (1997) |
| October 31 | 64.9°F (1967) | 5.0°F (2002) | 1.10 in (2012) |