January weather in South Wilmington, IL
The average temperature in South Wilmington in January is 22.3°F (14.0°F–30.7°F). Average precipitation: 1.96 inches. Average snowfall is 7.9 inches.
January is a winter month in South Wilmington, and is cooler than the annual average of 49.3°F. Daily temperatures swing about 16.7°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 21m. For travel, January is cold.
Avg High
30.7°F
Avg Low
14.0°F
Precipitation
1.96 in
Snow
7.9 in
January records in South Wilmington
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 57.9°F (2007) | -15.0°F (2018) | 0.76 in (2011) |
| January 2 | 51.1°F (2000) | -18.0°F (2018) | 0.08 in (2022) |
| January 3 | 62.1°F (2000) | -17.0°F (2018) | 0.63 in (1993) |
| January 4 | 60.1°F (2023) | -9.0°F (2018) | 1.26 in (1993) |
| January 5 | 64.0°F (1997) | -22.0°F (1999) | 1.15 in (2007) |
| January 6 | 54.0°F (1998) | -18.9°F (1999) | 0.40 in (1998) |
| January 7 | 61.0°F (2008) | -16.1°F (2014) | 0.24 in (1998) |
| January 8 | 64.9°F (2008) | -11.0°F (2014) | 2.58 in (2008) |
| January 9 | 64.9°F (2008) | -7.1°F (1994) | 0.54 in (2026) |
| January 10 | 52.0°F (2002) | -13.0°F (1999) | 0.45 in (2024) |
| January 11 | 54.0°F (2012) | -9.0°F (2010) | 1.75 in (2020) |
| January 12 | 59.0°F (2018) | -9.9°F (1997) | 0.62 in (2017) |
| January 13 | 55.0°F (2006) | -9.9°F (1997) | 0.69 in (1993) |
| January 14 | 50.0°F (1995) | -13.0°F (2024) | 1.75 in (1995) |
| January 15 | 45.0°F (2020) | -16.1°F (1994) | 0.93 in (2007) |
| January 16 | 46.9°F (2000) | -18.0°F (2009) | 0.31 in (1997) |
| January 17 | 52.0°F (2012) | -22.0°F (2009) | 0.55 in (2017) |
| January 18 | 55.9°F (1996) | -20.0°F (1994) | 0.70 in (2020) |
| January 19 | 59.0°F (1996) | -20.0°F (1994) | 0.77 in (2023) |
| January 20 | 57.0°F (2006) | -16.1°F (1994) | 0.71 in (2017) |
| January 21 | 46.0°F (2017) | -15.0°F (1994) | 0.75 in (1993) |
| January 22 | 59.0°F (2017) | -8.0°F (2025) | 1.12 in (1999) |
| January 23 | 57.0°F (2002) | -6.0°F (2026) | 0.63 in (2019) |
| January 24 | 57.9°F (2002) | -9.9°F (2014) | 0.42 in (1999) |
| January 25 | 44.1°F (2010) | -11.9°F (2008) | 0.30 in (2020) |
| January 26 | 52.0°F (2002) | -17.0°F (2019) | 0.48 in (2024) |
| January 27 | 55.9°F (2002) | -18.9°F (2019) | 0.51 in (1997) |
| January 28 | 61.0°F (2002) | -11.9°F (2014) | 0.55 in (1994) |
| January 29 | 61.0°F (2002) | -11.0°F (2014) | 0.60 in (2006) |
| January 30 | 61.0°F (2013) | -22.0°F (2019) | 1.90 in (2013) |
| January 31 | 52.0°F (2012) | -22.0°F (2019) | 1.35 in (2002) |