January weather forecastSouth Sioux City, NE
January
Weather in January
South Sioux City's January weather can be recognized by its frosty grip, with an average high and low temperature of 27°F (-2.8°C) and 13.5°F (-10.3°C) respectively. The winter chill remains firmly entrenched, seldom spilling over into February, making it colder than December. The days are shorter with an average daylight hour of 9.5. Frequent snowfall is a common sight, adding to the serene atmosphere of the city in winter. Layered clothing and winter accessories are suggested commodities during this period in South Sioux City.Temperature
With an average high-temperature of 27°F (-2.8°C) and an average low-temperature of 13.5°F (-10.3°C), January is the coldest month.Humidity
January is the most humid month, with an average relative humidity of 83%.Rainfall
The months with the least rainfall are January and February Rain falls for 2.6 days and accumulates 0.39" (10mm) of rain.Snowfall
Months with snowfall are January through April, October through December. The month with the most snowfall is January, when snow falls for 8.2 days and typically aggregates up to 1.77" (45mm) of snow.Daylight
In January, the average length of the day is 9h and 29min.On the first day of January, sunrise is at 7:55 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:37 pm CST.
Sunshine
January has the least sunshine of the year, with an average of 4.5h of sunshine.UV index
The month with the lowest UV index is January, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 1 during January, leads to the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Always opt for UVA and UVB-resistant sunglasses on radiant days. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
South Sioux City, NE
- Average high temperature in January: 27°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in January: 13.5°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in January
South Sioux City, NE
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in January
South Sioux City, NE
- Average wind speed in January: 10.7mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in January
South Sioux City, NE
- Average humidity in January: 83%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (65%).
Average rainfall in January
South Sioux City, NE
- Average rainfall in January: 0.39"
The wettest month (with the highest rainfall) is June (1.85").
The driest months (with the least rainfall) are January and February (0.39").
Average rainfall days in January
South Sioux City, NE
- Average rainfall days in January: 2.6 days
The month with the highest number of rainy days is June (14.6 days).
The month with the least rainy days is January (2.6 days).
Average snowfall in January
South Sioux City, NE
- Average snowfall in January: 1.77"
The month with the highest snowfall is January (1.77").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
South Sioux City, NE
- Average snowfall days in January: 8.2 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
South Sioux City, NE
- Average daylight in January: 9h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 4h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in January
South Sioux City, NE
- Average sunshine days in January: 22.6 days
The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in January
South Sioux City, NE
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in January
South Sioux City, NE
- Average cloud cover in January: 51
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in January
South Sioux City, NE
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





