January weather in Swansea, IL
The average temperature in Swansea in January is 33.6°F (24.3°F–42.9°F). Average precipitation: 2.56 inches. Average snowfall is 3.4 inches.
January is a winter month in Swansea, and is cooler than the annual average of 57.7°F. Daily temperatures swing about 18.6°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 35m. For travel, January is cold.
Avg High
42.9°F
Avg Low
24.3°F
Precipitation
2.56 in
Snow
3.4 in
January records in Swansea
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 66.0°F (1965) | -8.0°F (1968) | 0.88 in (1985) |
| January 2 | 70.0°F (1997) | -5.1°F (2001) | 1.37 in (1999) |
| January 3 | 69.1°F (1950) | -4.0°F (2001) | 3.58 in (1950) |
| January 4 | 72.0°F (1997) | 0.0°F (1959) | 2.67 in (2004) |
| January 5 | 72.0°F (1997) | -9.9°F (1999) | 2.17 in (2005) |
| January 6 | 70.0°F (2008) | -11.0°F (2014) | 1.34 in (1962) |
| January 7 | 73.0°F (2008) | -14.1°F (2014) | 0.60 in (1967) |
| January 8 | 71.1°F (2006) | -9.9°F (1979) | 2.14 in (2008) |
| January 9 | 70.0°F (2006) | -5.1°F (1962) | 0.86 in (2020) |
| January 10 | 66.0°F (2017) | -14.1°F (1982) | 2.54 in (1975) |
| January 11 | 66.9°F (2017) | -18.9°F (1977) | 2.29 in (2020) |
| January 12 | 70.0°F (1995) | -8.0°F (1997) | 1.27 in (2019) |
| January 13 | 66.9°F (2005) | -0.9°F (1997) | 2.05 in (2013) |
| January 14 | 64.0°F (1952) | -9.9°F (1982) | 1.84 in (1962) |
| January 15 | 66.9°F (1950) | -18.0°F (1979) | 0.92 in (2007) |
| January 16 | 68.0°F (1990) | -8.0°F (1977) | 0.45 in (1978) |
| January 17 | 73.9°F (1952) | -27.0°F (1977) | 0.78 in (2004) |
| January 18 | 69.1°F (1951) | -7.1°F (1994) | 2.25 in (1949) |
| January 19 | 71.1°F (1952) | -16.1°F (1984) | 1.34 in (2023) |
| January 20 | 64.9°F (2006) | -11.9°F (1985) | 1.25 in (1954) |
| January 21 | 72.0°F (1986) | -15.0°F (1984) | 1.53 in (1958) |
| January 22 | 71.1°F (1967) | -6.0°F (1970) | 0.82 in (1957) |
| January 23 | 73.0°F (1967) | -9.9°F (1963) | 1.32 in (1996) |
| January 24 | 75.0°F (1950) | -8.0°F (1963) | 0.98 in (2024) |
| January 25 | 73.9°F (1950) | -2.9°F (1961) | 1.36 in (2021) |
| January 26 | 61.0°F (2007) | -1.8°F (2026) | 1.51 in (1967) |
| January 27 | 68.0°F (1999) | -6.0°F (1963) | 1.71 in (1997) |
| January 28 | 72.0°F (1970) | -13.0°F (1963) | 0.38 in (2009) |
| January 29 | 69.1°F (1970) | -8.0°F (1977) | 2.87 in (1969) |
| January 30 | 68.0°F (2013) | -2.9°F (1966) | 2.32 in (2013) |
| January 31 | 71.1°F (1989) | -9.9°F (1965) | 1.57 in (1999) |