January weather in East Alton, IL
The average temperature in East Alton in January is 30.3°F (21.7°F–39.0°F). Average precipitation: 2.53 inches.
January is a winter month in East Alton, and is cooler than the annual average of 55.7°F. Daily temperatures swing about 17.3°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 34m. For travel, January is cold.
Avg High
39.0°F
Avg Low
21.7°F
Precipitation
2.53 in
Daylight
9h 34m
January records in East Alton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 66.9°F (1965) | -9.0°F (1974) | 1.48 in (1985) |
| January 2 | 64.0°F (2006) | -9.0°F (1974) | 0.92 in (2021) |
| January 3 | 68.0°F (1997) | -6.0°F (1979) | 1.57 in (1950) |
| January 4 | 69.1°F (2023) | -2.0°F (1959) | 3.58 in (1950) |
| January 5 | 68.0°F (1997) | -4.0°F (1959) | 2.65 in (2005) |
| January 6 | 66.0°F (1946) | -0.9°F (1979) | 1.22 in (2005) |
| January 7 | 70.0°F (1965) | -7.1°F (1968) | 0.55 in (1962) |
| January 8 | 71.1°F (2008) | -9.0°F (1979) | 1.59 in (2008) |
| January 9 | 77.0°F (2008) | -8.0°F (1979) | 0.57 in (1965) |
| January 10 | 71.1°F (2008) | -16.1°F (1982) | 1.68 in (1975) |
| January 11 | 60.1°F (2020) | -16.1°F (1982) | 2.40 in (2020) |
| January 12 | 64.9°F (1960) | -9.0°F (1974) | 0.65 in (2020) |
| January 13 | 66.9°F (2005) | -9.0°F (1974) | 2.27 in (2005) |
| January 14 | 61.0°F (1946) | -5.1°F (1979) | 1.18 in (1995) |
| January 15 | 64.0°F (1949) | -8.0°F (1972) | 1.34 in (1962) |
| January 16 | 62.1°F (1952) | -11.0°F (1977) | 0.51 in (1991) |
| January 17 | 66.0°F (1952) | -15.0°F (1977) | 1.69 in (1998) |
| January 18 | 66.0°F (1946) | -11.9°F (1977) | 1.53 in (2020) |
| January 19 | 71.1°F (1952) | -8.0°F (1994) | 1.93 in (1949) |
| January 20 | 66.0°F (2006) | -15.0°F (1985) | 0.84 in (2017) |
| January 21 | 64.0°F (2006) | -15.0°F (1985) | 1.07 in (1959) |
| January 22 | 71.1°F (1986) | -9.9°F (1970) | 0.58 in (2018) |
| January 23 | 69.1°F (1967) | -9.9°F (1963) | 1.00 in (2019) |
| January 24 | 72.0°F (1950) | -5.1°F (1963) | 1.50 in (2010) |
| January 25 | 72.0°F (1950) | 0.0°F (1961) | 0.50 in (2021) |
| January 26 | 64.0°F (1950) | -6.0°F (2026) | 1.20 in (2021) |
| January 27 | 64.9°F (1944) | -8.0°F (1948) | 2.00 in (1983) |
| January 28 | 63.0°F (1999) | -8.0°F (1948) | 0.68 in (1969) |
| January 29 | 70.0°F (2013) | -7.1°F (1966) | 0.50 in (2006) |
| January 30 | 69.1°F (2013) | -2.9°F (1951) | 1.60 in (2013) |
| January 31 | 68.0°F (2008) | -6.0°F (1965) | 1.77 in (1982) |