October weather in Plains, MT
The average temperature in Plains in October is 45.3°F (32.1°F–58.5°F). Average precipitation: inches.
October is a fall month in Plains, and is cooler than the annual average of 46.2°F. Daily temperatures swing about 26.4°F between overnight low and afternoon high. Daylight averages about 10h 35m. For travel, October is cool.
Avg High
58.5°F
Avg Low
32.1°F
Precipitation
in
Daylight
10h 35m
October records in Plains
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 89.1°F (1963) | 18.0°F (1999) | 1.35 in (2005) |
| October 2 | 84.9°F (1963) | 19.9°F (1999) | 0.29 in (1966) |
| October 3 | 84.0°F (1963) | 21.9°F (1964) | 0.64 in (1967) |
| October 4 | 84.9°F (1987) | 17.1°F (1999) | 0.99 in (2005) |
| October 5 | 84.9°F (1979) | 19.0°F (1978) | 0.53 in (1990) |
| October 6 | 84.0°F (1979) | 12.0°F (2001) | 0.42 in (1970) |
| October 7 | 82.0°F (1979) | 19.9°F (1974) | 0.51 in (1993) |
| October 8 | 84.9°F (1979) | 18.0°F (2009) | 0.18 in (1966) |
| October 9 | 82.0°F (1988) | 16.0°F (1987) | 0.73 in (1999) |
| October 10 | 82.0°F (1988) | 9.0°F (2009) | 0.44 in (1962) |
| October 11 | 82.9°F (1991) | 5.0°F (2009) | 0.84 in (1972) |
| October 12 | 82.0°F (1979) | 1.9°F (2009) | 1.01 in (1962) |
| October 13 | 78.1°F (1979) | 14.0°F (1969) | 0.74 in (1972) |
| October 14 | 77.0°F (1979) | 16.0°F (1970) | 0.46 in (2009) |
| October 15 | 81.0°F (1991) | 15.1°F (1969) | 0.45 in (1988) |
| October 16 | 75.9°F (1961) | 12.0°F (1999) | 0.60 in (1983) |
| October 17 | 79.0°F (1974) | 8.1°F (1999) | 0.22 in (1988) |
| October 18 | 78.1°F (1974) | 14.0°F (1969) | 0.20 in (1995) |
| October 19 | 73.9°F (1973) | 10.9°F (1976) | 0.53 in (1979) |
| October 20 | 73.9°F (2003) | 12.0°F (1976) | 0.55 in (2006) |
| October 21 | 79.0°F (2003) | 12.0°F (1976) | 0.62 in (1989) |
| October 22 | 73.0°F (2003) | 12.9°F (1994) | 0.15 in (1975) |
| October 23 | 68.0°F (1969) | 12.9°F (2002) | 0.33 in (2001) |
| October 24 | 72.0°F (2007) | 9.0°F (2002) | 0.46 in (1969) |
| October 25 | 68.0°F (1965) | 10.0°F (2002) | 0.70 in (2007) |
| October 26 | 69.1°F (1983) | 10.0°F (2002) | 0.73 in (1984) |
| October 27 | 66.9°F (1965) | 12.0°F (1963) | 1.67 in (1994) |
| October 28 | 68.0°F (1983) | 7.0°F (1971) | 0.76 in (1999) |
| October 29 | 68.0°F (1965) | 5.0°F (1971) | 0.45 in (1997) |
| October 30 | 66.0°F (1999) | 3.0°F (2002) | 1.07 in (1997) |
| October 31 | 64.0°F (1967) | -6.0°F (2002) | 1.08 in (1994) |