Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January proves to be the coldest month, recording an average maximum temperature of 23.4°F (-4.8°C) and a minimum temperature of 9.7°F (-12.4°C).Humidity
The most humid month is January, with an average relative humidity of 88%.Rainfall
The months with the least rainfall are January, February and November Rain falls for 3.8 days and accumulates 0.67" (17mm) of rain.Snowfall
January through May, October through December are months with snowfall. In Sioux Falls, during January, snow falls for 11.8 days and regularly aggregates up to 3.35" (85mm) of snow. Throughout the year, there are 48.7 snowfall days, and 18.23" (463mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 23min.On the first day of the month, sunrise is at 7:59 am and sunset at 5:00 pm. On the last day of January, sunrise is at 7:44 am and sunset at 5:36 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 4h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In January, a daily UV index of 2 turns into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
How many days does it snow in January in Sioux Falls?
What is the average length of the day in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What are the months with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Sioux Falls, SD
- Average high temperature in January: 23.4°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in January: 9.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in January
Sioux Falls, SD
- 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
Sioux Falls, SD
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in January
Sioux Falls, SD
- Average humidity in January: 88%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (66%).
Average rainfall in January
Sioux Falls, SD
- Average rainfall in January: 0.67"
The wettest month (with the highest rainfall) is June (3.27").
The driest months (with the least rainfall) are January, February and November (0.67").
Average rainfall days in January
Sioux Falls, SD
- Average rainfall days in January: 3.8 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (3 days).
Average snowfall in January
Sioux Falls, SD
- Average snowfall in January: 3.35"
The month with the highest snowfall is February (4.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Sioux Falls, SD
- Average snowfall days in January: 11.8 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Sioux Falls, SD
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 4h and 0min
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 0min).
Average sunshine days in January
Sioux Falls, SD
- Average sunshine days in January: 18.1 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is June (10 days).
Average UV index in January
Sioux Falls, SD
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Sioux Falls, SD
- Average cloud cover in January: 56
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in January
Sioux Falls, SD
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Sioux Falls, South Dakota, USA
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