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Sioux City (IA)
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United States weather

Weather in Sioux City, Iowa for January 2026

Your guide to Sioux City weather in January - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Sioux City during January is quite rare, with fewer than 2 snowy days on average.
    According to Sioux City snow forecast for January 2026, 3 snowy days are expected in the next 2 weeks. The closest date with snow is Saturday, January 17.

    • Temperatures

  • So far, January 2026 in Sioux City shows a warmer trend than usual by 2.9 °F.

  • Expect cooler weather in the next days in Sioux City with the forecast suggesting a temperature of -1 °F, lower than the historical average.

  • In general, the average temperature in Sioux City at the beginning of January is 0 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 3.1 °F by the end of January.

    • Rain 🌧️

  • With an average of 4 rainy days, Sioux City experiences minimal rainfall in January.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
26
Dry days
Average rainy days
4
Rainy days
Average snowy days
1
Snow days
Average temperatures
-1°/-10°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
69 %
Avg humidity

Sioux City Weather January

Move between months or click on a day
December
February
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
-1°
2
Moderate snow
0°
3
Overcast
2°
4
Light freezing rain
1°
5
Light freezing rain
-3°
6
Overcast
0°
7
Partly cloudy
1°
8
Cloudy
-2°
9
Light freezing rain
1°
10
Overcast
-1°
11
Overcast
4°
12
Overcast
5°
13
Sunny
2°
14
Sunny
2°
15
Overcast
3°
16
Overcast
0°
17
Overcast
-11°
18
Partly cloudy
5°
19
Partly cloudy
1°
20
Sunny
-4°
21
Partly cloudy
2°
22
Sunny
2°
23
Ice pellets
-2°
24
Partly cloudy
0°
25
Partly cloudy
-2°
26
Partly cloudy
-6°
27
Light freezing rain
-4°
28
Sunny
11°
29
Sunny
8°
30
Overcast
7°
31
Overcast
8°

Temperatures trend during January in Sioux City

See the weather trend as well as the moving average line

January weather in Sioux City day by day

Click on a date for more information
December February
Date Weather Temperatures Rain Snow More
Jan. 1 Sunny
Sunny
 -1° /-6° 0 mm 0 cm
Jan. 2 Moderate snow
Moderate snow
 0° /-3° 2.1 mm 0.9 cm
Jan. 3 Overcast
Overcast
 2° /-5° 0 mm 0 cm
Jan. 4 Light freezing rain
Light freezing rain
 1° /-7° 0.2 mm 0 cm
Jan. 5 Light freezing rain
Light freezing rain
 -3° /-7° 0.3 mm 0 cm
Jan. 6 Overcast
Overcast
 0° /-6° 0 mm 0 cm
Jan. 7 Partly cloudy
Partly cloudy
 1° /-9° 0 mm 0 cm
Jan. 8 Cloudy
Cloudy
 -2° /-9° 0 mm 0 cm
Jan. 9 Light freezing rain
Light freezing rain
 1° /-4° 0.2 mm 0 cm
Jan. 10 Overcast
Overcast
 -1° /-5° 0 mm 0 cm
Jan. 11 Overcast
Overcast
 4° /-7° 0 mm 0 cm
Jan. 12 Overcast
Overcast
 5° /-5° 0.1 mm 0 cm
Jan. 13 Sunny
Sunny
 2° /-7° 0.1 mm 0 cm
Jan. 14 Sunny
Sunny
 2° /-7° 0 mm 0 cm
Jan. 15 Overcast
Overcast
 3° /-3° 0 mm 0 cm
Jan. 16 Overcast
Overcast
 0° /-9° 0.1 mm 0 cm
Jan. 17 Overcast
Overcast
 -11° /-15° 0 mm 0 cm
Jan. 18 Partly cloudy
Partly cloudy
 5° /-17° 0 mm 0 cm
Jan. 19 Partly cloudy
Partly cloudy
 1° /-9° 0 mm 0 cm
Jan. 20 Sunny
Sunny
 -4° /-11° 0 mm 0 cm
Jan. 21 Partly cloudy
Partly cloudy
 2° /-7° 0 mm 0 cm
Jan. 22 Sunny
Sunny
 2° /-3° 0 mm 0 cm
Jan. 23 Ice pellets
Ice pellets
 -2° /-8° 0.2 mm 0 cm
Jan. 24 Partly cloudy
Partly cloudy
 0° /-10° 0 mm 0 cm
Jan. 25 Partly cloudy
Partly cloudy
 -2° /-10° 0 mm 0 cm
Jan. 26 Partly cloudy
Partly cloudy
 -6° /-12° 0 mm 0 cm
Jan. 27 Light freezing rain
Light freezing rain
 -4° /-9° 0.2 mm 0.2 cm
Jan. 28 Sunny
Sunny
 11° /-5° 0 mm 0 cm
Jan. 29 Sunny
Sunny
 8° /-2° 0 mm 0 cm
Jan. 30 Overcast
Overcast
 7° /-1° 0 mm 0 cm
Jan. 31 Overcast
Overcast
 8° /-2° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Sioux City in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Sioux City forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Sioux City in January - FAQ

What are the expected maximum and minimum temperatures in Sioux City during January?

Brace for cold days with temperatures not exceeding -1° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.

How much rainfall should be expected in Sioux City during January?

Rainfall in Sioux City during January is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 4 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.

Will it snow in Sioux City in January 2026?

Sioux City typically sees 1.9 cm of snowfall during January.

What are the typical wind conditions in Sioux City during January?

The average wind speed in Sioux City during January is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

Sioux City snow forecast January 2026

Track daily snowfall levels and discover Sioux City’s snowy potential this January ❄️
On average, Sioux City sees 1 snowy days during January, with approximately 1.9 cm of total snowfall.

January rainfall patterns in Sioux City

Explore the daily rainfall trends and prepare for Sioux Citys January weather 💧
Typically, Sioux City has 4 rainy days in January with a total of 6.4 mm of rainfall.

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Location coordinates Where is Sioux City?

Get accurate weather forecasts for Sioux City, located at latitude 42.5 and longitude -96.4. Stay updated with localized weather information tailored for Sioux City.

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