October weather in Alton, MO
The average temperature in Alton in October is 56.5°F (42.8°F–70.2°F). Average precipitation: 3.77 inches.
October is a fall month in Alton, and is warmer than the annual average of 55.7°F. Daily temperatures swing about 27.4°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 11h 2m. For travel, October is a comfortable month to visit.
Avg High
70.2°F
Avg Low
42.8°F
Precipitation
3.77 in
Daylight
11h 2m
October records in Alton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 96.1°F (1998) | 35.1°F (1974) | 1.87 in (1962) |
| October 2 | 93.0°F (2023) | 34.0°F (1975) | 0.33 in (2021) |
| October 3 | 91.9°F (1969) | 28.0°F (1981) | 2.00 in (1954) |
| October 4 | 89.1°F (2000) | 28.0°F (1981) | 1.14 in (1983) |
| October 5 | 90.0°F (2000) | 28.9°F (1979) | 2.27 in (1959) |
| October 6 | 93.0°F (1981) | 28.9°F (1980) | 2.40 in (1998) |
| October 7 | 91.0°F (1963) | 30.0°F (1964) | 1.50 in (1951) |
| October 8 | 93.9°F (1979) | 25.0°F (2000) | 1.45 in (1970) |
| October 9 | 91.0°F (1980) | 27.0°F (2000) | 1.64 in (1970) |
| October 10 | 91.9°F (1963) | 26.1°F (1979) | 2.34 in (2003) |
| October 11 | 93.0°F (1963) | 27.0°F (2000) | 1.68 in (1978) |
| October 12 | 89.1°F (1975) | 27.0°F (2000) | 1.67 in (2004) |
| October 13 | 86.0°F (1963) | 27.0°F (1977) | 2.51 in (1973) |
| October 14 | 89.1°F (1963) | 24.1°F (1979) | 2.08 in (1970) |
| October 15 | 88.0°F (1963) | 25.0°F (1969) | 1.25 in (1974) |
| October 16 | 84.9°F (1963) | 30.0°F (1966) | 2.92 in (2006) |
| October 17 | 88.0°F (2011) | 26.1°F (1978) | 2.55 in (1999) |
| October 18 | 87.1°F (1965) | 23.0°F (1976) | 2.48 in (1967) |
| October 19 | 88.0°F (1963) | 28.0°F (1972) | 2.32 in (1994) |
| October 20 | 87.1°F (1963) | 27.0°F (1966) | 1.06 in (2020) |
| October 21 | 91.9°F (1979) | 25.0°F (1976) | 0.90 in (1950) |
| October 22 | 87.1°F (1963) | 21.9°F (1982) | 0.92 in (1957) |
| October 23 | 84.0°F (1963) | 21.9°F (1982) | 1.37 in (1957) |
| October 24 | 84.0°F (2000) | 16.0°F (1981) | 2.80 in (1951) |
| October 25 | 84.0°F (2000) | 16.0°F (1981) | 0.94 in (1975) |
| October 26 | 84.9°F (1963) | 23.0°F (1982) | 0.86 in (1956) |
| October 27 | 84.0°F (1963) | 25.0°F (1978) | 1.98 in (1970) |
| October 28 | 82.9°F (1971) | 21.0°F (1969) | 1.22 in (1980) |
| October 29 | 84.9°F (2024) | 19.9°F (1976) | 2.70 in (2020) |
| October 30 | 82.0°F (2024) | 19.0°F (1980) | 3.72 in (2009) |
| October 31 | 82.9°F (1968) | 19.0°F (1980) | 2.81 in (1941) |