Typical Weather in Sioux City, IA in January
31° F Avg High
10° F Avg Low
2 Rainy Days
☀️ Temperature Summary
January is one of the cooler months of the year for Sioux City, with highs averaging around 31°F. Overnight lows can reach 10°F. This is the coldest month of the year in Sioux City.
You may want to consider a warmer month to visit Sioux City, unless you're ready to brave the cold.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
In January you can expect close to a 6% chance of rain for any given day. It rains less than usual in January, with total rainfall for the month typically near 1 inches.
Rainfall Throughout the Year
Planning a trip to Sioux City? Try our free trip weather planner