October weather in Lewistown, MT
The average temperature in Lewistown in October is 43.4°F (30.8°F–56.0°F). Average precipitation: 1.27 inches.
October is a fall month in Lewistown, and is warmer than the annual average of 43.1°F. Daily temperatures swing about 25.2°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 10h 36m. For travel, October is cool.
Avg High
56.0°F
Avg Low
30.8°F
Precipitation
1.27 in
Daylight
10h 36m
October records in Lewistown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 90.0°F (2011) | 15.1°F (1950) | 0.51 in (1989) |
| October 2 | 88.0°F (1922) | 12.0°F (1950) | 1.85 in (1897) |
| October 3 | 87.1°F (1922) | 17.1°F (1950) | 1.09 in (2016) |
| October 4 | 91.9°F (1905) | 10.9°F (1916) | 1.04 in (2016) |
| October 5 | 87.1°F (1905) | 12.0°F (1916) | 0.70 in (1908) |
| October 6 | 82.9°F (1934) | 12.0°F (2000) | 0.62 in (2011) |
| October 7 | 86.0°F (1943) | 16.0°F (1985) | 1.13 in (2011) |
| October 8 | 84.0°F (1980) | 8.1°F (1985) | 0.42 in (1975) |
| October 9 | 84.0°F (1911) | -0.9°F (1985) | 0.41 in (1930) |
| October 10 | 86.0°F (2015) | 3.2°F (2019) | 0.60 in (1929) |
| October 11 | 90.0°F (1934) | 10.2°F (2019) | 0.36 in (1924) |
| October 12 | 87.1°F (1934) | 7.0°F (2009) | 1.03 in (1981) |
| October 13 | 84.0°F (1964) | 7.0°F (1969) | 0.79 in (1975) |
| October 14 | 82.0°F (1929) | 10.0°F (1969) | 0.92 in (1962) |
| October 15 | 87.1°F (1924) | 14.0°F (1976) | 0.89 in (1994) |
| October 16 | 84.9°F (1927) | 9.0°F (1930) | 0.76 in (1988) |
| October 17 | 82.9°F (1927) | 5.0°F (1930) | 1.33 in (1938) |
| October 18 | 82.0°F (1927) | 1.0°F (1905) | 0.59 in (1949) |
| October 19 | 82.0°F (1927) | -4.0°F (1905) | 0.99 in (1943) |
| October 20 | 84.0°F (1927) | 10.0°F (1916) | 0.60 in (1958) |
| October 21 | 81.0°F (1927) | 9.0°F (1981) | 3.80 in (1908) |
| October 22 | 80.1°F (1915) | 3.0°F (1957) | 0.74 in (2022) |
| October 23 | 81.0°F (1903) | 3.0°F (1957) | 0.68 in (1983) |
| October 24 | 82.0°F (2007) | -3.8°F (2020) | 0.57 in (1954) |
| October 25 | 80.1°F (1924) | -8.0°F (1923) | 0.72 in (1913) |
| October 26 | 81.0°F (1944) | -4.9°F (2020) | 0.56 in (1910) |
| October 27 | 75.0°F (1944) | -4.9°F (2023) | 0.99 in (1940) |
| October 28 | 78.1°F (1937) | -9.8°F (2023) | 0.60 in (1912) |
| October 29 | 79.0°F (1968) | -7.1°F (1991) | 0.72 in (1929) |
| October 30 | 75.0°F (1906) | -9.9°F (1935) | 0.59 in (1943) |
| October 31 | 73.0°F (1949) | -8.0°F (2002) | 0.72 in (1974) |