October weather in Eureka, MT
The average temperature in Eureka in October is 46.3°F (35.1°F–57.4°F). Average precipitation: 1.24 inches. Average snowfall is 0.6 inches.
October is a fall month in Eureka, and is cooler than the annual average of 47°F. Daily temperatures swing about 22.3°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 10h 31m. For travel, October is cool.
Avg High
57.4°F
Avg Low
35.1°F
Precipitation
1.24 in
Snow
0.6 in
October records in Eureka
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 84.0°F (2011) | 25.0°F (1962) | 0.17 in (2016) |
| October 2 | 81.0°F (1963) | 21.0°F (1989) | 1.01 in (2018) |
| October 3 | 82.0°F (1963) | 18.0°F (1989) | 0.41 in (1995) |
| October 4 | 82.0°F (1979) | 19.9°F (1977) | 0.34 in (1995) |
| October 5 | 81.0°F (1979) | 19.9°F (1962) | 0.32 in (1963) |
| October 6 | 84.0°F (1980) | 17.1°F (2000) | 0.61 in (1985) |
| October 7 | 86.0°F (1980) | 19.9°F (2000) | 0.52 in (1975) |
| October 8 | 86.0°F (1980) | 17.1°F (1985) | 0.39 in (2019) |
| October 9 | 78.1°F (2015) | 15.1°F (1973) | 0.30 in (1999) |
| October 10 | 86.0°F (1991) | 10.9°F (2009) | 0.96 in (2016) |
| October 11 | 84.0°F (1991) | 9.0°F (2009) | 0.44 in (1994) |
| October 12 | 75.9°F (1991) | 7.0°F (2009) | 0.51 in (1999) |
| October 13 | 73.9°F (1976) | 14.0°F (1969) | 0.29 in (2020) |
| October 14 | 78.1°F (1991) | 19.0°F (1970) | 0.25 in (2016) |
| October 15 | 80.1°F (1991) | 18.0°F (1970) | 0.33 in (2012) |
| October 16 | 80.1°F (1974) | 16.0°F (1971) | 0.50 in (1988) |
| October 17 | 79.0°F (1974) | 10.9°F (1971) | 0.21 in (2000) |
| October 18 | 78.1°F (1974) | 12.9°F (1969) | 0.32 in (1983) |
| October 19 | 75.9°F (2003) | 12.9°F (1987) | 0.34 in (1996) |
| October 20 | 75.0°F (2023) | 15.1°F (1987) | 0.29 in (1968) |
| October 21 | 73.0°F (2024) | 16.0°F (1984) | 0.37 in (1989) |
| October 22 | 71.1°F (1969) | 18.0°F (1981) | 0.58 in (1980) |
| October 23 | 73.9°F (2007) | 12.0°F (2002) | 0.42 in (2020) |
| October 24 | 75.0°F (2007) | 9.0°F (2002) | 0.40 in (1969) |
| October 25 | 73.0°F (2007) | 3.0°F (2020) | 0.33 in (1985) |
| October 26 | 70.0°F (1966) | 10.9°F (2002) | 0.76 in (1972) |
| October 27 | 70.0°F (1974) | 16.0°F (2002) | 0.48 in (1994) |
| October 28 | 66.0°F (1983) | 5.0°F (1971) | 0.42 in (2018) |
| October 29 | 73.9°F (1987) | 5.0°F (1991) | 0.74 in (2021) |
| October 30 | 73.9°F (1987) | 0.0°F (2002) | 0.40 in (1997) |
| October 31 | 64.0°F (1988) | 3.0°F (2002) | 0.74 in (2016) |