January weather in South Sioux City, NE
The average temperature in South Sioux City in January is 19.2°F (8.7°F–29.7°F). Average precipitation: 0.66 inches.
January is a winter month in South Sioux City, and is cooler than the annual average of 48°F. Daily temperatures swing about 21°F between overnight low and afternoon high. Daylight averages about 9h 13m. For travel, January is cold.
Avg High
29.7°F
Avg Low
8.7°F
Precipitation
0.66 in
Daylight
9h 13m
January records in South Sioux City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 55.0°F (2026) | -23.1°F (2018) | 0.24 in (2011) |
| January 2 | 41.0°F (2020) | -24.0°F (2018) | 0.18 in (2025) |
| January 3 | 39.0°F (2020) | -17.0°F (2018) | 0.30 in (2023) |
| January 4 | 48.9°F (2019) | -5.1°F (2015) | 0.21 in (2023) |
| January 5 | 57.9°F (2012) | -9.0°F (2015) | 0.00 in (2011) |
| January 6 | 68.0°F (2012) | -13.0°F (2014) | 0.19 in (2021) |
| January 7 | 66.9°F (2012) | -13.0°F (2014) | 0.27 in (2021) |
| January 8 | 62.1°F (2026) | -13.0°F (2014) | 0.01 in (2016) |
| January 9 | 53.1°F (2012) | -13.0°F (2014) | 0.40 in (2024) |
| January 10 | 54.0°F (2012) | -11.0°F (2016) | 0.10 in (2011) |
| January 11 | 61.0°F (2012) | -9.9°F (2016) | 0.15 in (2024) |
| January 12 | 55.0°F (2022) | -6.0°F (2015) | 0.25 in (2024) |
| January 13 | 55.9°F (2026) | -13.0°F (2015) | 0.12 in (2020) |
| January 14 | 54.0°F (2026) | -18.0°F (2024) | 0.15 in (2021) |
| January 15 | 39.9°F (2012) | -18.9°F (2024) | 0.10 in (2011) |
| January 16 | 53.1°F (2012) | -9.9°F (2024) | 0.15 in (2023) |
| January 17 | 48.9°F (2013) | -9.0°F (2024) | 0.23 in (2017) |
| January 18 | 48.9°F (2025) | -8.0°F (2016) | 0.45 in (2020) |
| January 19 | 59.0°F (2022) | -8.0°F (2016) | 0.72 in (2023) |
| January 20 | 63.0°F (2014) | -14.1°F (2024) | 0.09 in (2016) |
| January 21 | 55.0°F (2018) | -18.0°F (2024) | 0.10 in (2012) |
| January 22 | 43.0°F (2017) | -13.0°F (2025) | 0.47 in (2018) |
| January 23 | 46.9°F (2022) | -11.0°F (2011) | 1.19 in (2018) |
| January 24 | 45.0°F (2015) | -11.9°F (2026) | 0.05 in (2021) |
| January 25 | 48.9°F (2015) | -5.1°F (2026) | 0.40 in (2017) |
| January 26 | 55.9°F (2014) | -9.9°F (2026) | 0.42 in (2021) |
| January 27 | 53.1°F (2015) | -9.9°F (2026) | 0.00 in (2011) |
| January 28 | 53.1°F (2025) | -11.0°F (2014) | 0.38 in (2021) |
| January 29 | 60.1°F (2025) | -11.9°F (2014) | 0.02 in (2020) |
| January 30 | 54.0°F (2025) | -18.0°F (2019) | 0.00 in (2011) |
| January 31 | 64.0°F (2012) | -18.0°F (2019) | 0.03 in (2016) |