January weather forecast
Selby, SD

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Weather in January

January, like December, is a freezing cold winter month in Selby, South Dakota, with an average temperature varying between 23°F (-5°C) and 9°F (-12.8°C).

Temperature

January is the month when Selby experiences its coldest temperatures, averaging a high of 23°F (-5°C) and a low of 9°F (-12.8°C).

Humidity

The most humid month is January, with an average relative humidity of 87%.

Rainfall

The month with the least rainfall is January, when the rain falls for 2.3 days and typically collects 0.47" (12mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Selby. In Selby, in January, during 11.8 snowfall days, 2.87" (73mm) of snow is typically accumulated. Throughout the year, in Selby, there are 49.4 snowfall days, and 19.09" (485mm) of snow is accumulated.

Daylight

In Selby, South Dakota, the average length of the day in January is 9h and 11min.
On the first day of January, sunrise is at 8:20 am and sunset at 5:07 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 5:44 pm CST.

Sunshine

With an average of 4.1h of sunshine, January has the least sunshine of the year.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, the UV index of 1 transforms into the following advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in Selby?

With an average high-temperature of 23°F (-5°C) and an average low-temperature of 9°F (-12.8°C), January is the coldest month.

How cold is January in Selby?

In Selby, 23°F (-5°C) is the average high-temperature and 9°F (-12.8°C) is the average low-temperature during January.

What is the most humid month in Selby?

January is the most humid month, with an average relative humidity of 87%.

What is the average humidity in January in Selby?

The average relative humidity in January is 87%.

What is the driest month in Selby?

The month with the least rainfall in Selby is January, when the rain falls for 2.3 days and typically collects 0.47" (12mm) of precipitation.

How much does it rain in Selby in January?

In January, in Selby, South Dakota, the rain falls for 2.3 days. Throughout January, 0.47" (12mm) of precipitation is accumulated.

How much does it snow in Selby in January?

In Selby, in January, during 11.8 snowfall days, 2.87" (73mm) of snow is typically accumulated.

What is the average length of the day in January in Selby?

In Selby, the average day length in January is 9h and 11min.

What time are sunrise and sunset in January in Selby?

On the first day of January in Selby, sunrise is at 8:20 am and sunset at 5:07 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 5:44 pm CST.

What is the month with the least sunshine in Selby?

The month with the least sunshine in Selby, South Dakota, is January, with an average of 4.1h of sunshine.

How many hours of sunshine does Selby have in January?

The average sunshine duration in January in Selby, South Dakota, is 4.1h.

When is the lowest UV index in Selby?

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Selby, South Dakota.

How high is the UV index in January in Selby?

In January, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Selby, SD

Average temperature in January - Selby, SD
  • Average high temperature in January: 23°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (23°F).

  • Average low temperature in January: 9°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (9°F).

Average pressure in January
Selby, SD

Average pressure in January - Selby, SD
  • Average pressure in January: 30.16"Hg

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in January
Selby, SD

Average wind speed in January - Selby, SD
  • Average wind speed in January: 10mph

The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is February (9.4mph).

Average humidity in January
Selby, SD

Average humidity in January - Selby, SD
  • Average humidity in January: 87%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (52%).

Average rainfall in January
Selby, SD

Average rainfall in January - Selby, SD
  • Average rainfall in January: 0.47"

The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in January
Selby, SD

Average rainfall days in January - Selby, SD
  • Average rainfall days in January: 2.3 days

The month with the highest number of rainy days is June (13.8 days).
The month with the least rainy days is February (1.3 days).

Average snowfall in January
Selby, SD

Average snowfall in January - Selby, SD
  • Average snowfall in January: 2.87"

The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Selby, SD

Average snowfall days in January - Selby, 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
Selby, SD

Average daylight in January / Average sunshine in January - Selby, SD
  • Average daylight in January: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in January: 4h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in January
Selby, SD

Average sunshine days in January - Selby, SD
  • Average sunshine days in January: 18 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.6 days).

Average UV index in January
Selby, SD

Average UV index in January - Selby, SD
  • Average UV index in January: 1

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in January
Selby, SD

Average cloud cover in January - Selby, SD
  • Average cloud cover in January: 56

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 21).

Average visibility in January
Selby, SD

Average visibility in January - Selby, 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).

Selby, South Dakota, USA

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