January weather forecast
Arlington, SD

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Weather in January

January, the same as December, in Arlington, South Dakota, is a freezing cold winter month, with an average temperature varying between 20.7°F (-6.3°C) and 7°F (-13.9°C).

Temperature

January, recording an average high temperature of 20.7°F (-6.3°C) and a low temperature of 7°F (-13.9°C), is Arlington's coldest month.

Humidity

January is the most humid month, with an average relative humidity of 90%.

Rainfall

In Arlington, in January, it is raining for 3.2 days, with typically 0.71" (18mm) of accumulated precipitation. Throughout the year, in Arlington, there are 125.5 rainfall days, and 21.65" (550mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Arlington, during January, snow falls for 14.4 days and regularly aggregates up to 4.13" (105mm) of snow. Throughout the year, in Arlington, there are 61.5 snowfall days, and 21.38" (543mm) of snow is accumulated.

Daylight

In Arlington, the average length of the day in January is 9h and 19min.
On the first day of the month, sunrise is at 8:04 am and sunset at 4:59 pm. On the last day of January, in Arlington, sunrise is at 7:47 am and sunset at 5:35 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 3.8h of sunshine.

UV index

The month with the lowest UV index is January, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 1 in January interprets into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

Arlington's coldest month, January, registers temperatures that range from a high of 20.7°F (-6.3°C) to a low of 7°F (-13.9°C).

How cold is January?

In Arlington, in January, the average high-temperature is 20.7°F (-6.3°C), and the average low-temperature is 7°F (-13.9°C).

What is the most humid month?

With an average relative humidity of 90%, January is the most humid month.

What is the average humidity in January?

In January, the average relative humidity is 90%.

How many days does it rain in January?

In Arlington, in January, during 3.2 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

How many days does it snow in January?

In January, it is snowing for 14.4 days. Throughout January, 4.13" (105mm) of snow is accumulated.

How many hours of daylight does Arlington have in January?

In January, the average day length in Arlington is 9h and 19min.

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 8:04 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:35 pm CST.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 3.8h of sunshine.

How many hours of sunshine does Arlington have in January?

The average sunshine duration in January in Arlington is 3.8h.

When is the lowest UV index?

The month with the lowest UV index is January, with an average maximum UV index of 1.

What is the UV index intensity in January?

In January, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
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
Arlington, SD

Average temperature in January - Arlington, SD
  • Average high temperature in January: 20.7°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in January: 7°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (7°F).

Average pressure in January
Arlington, SD

Average pressure in January - Arlington, 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 (29.86"Hg).

Average wind speed in January
Arlington, SD

Average wind speed in January - Arlington, SD
  • Average wind speed in January: 10.8mph

The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is July (8.4mph).

Average humidity in January
Arlington, SD

Average humidity in January - Arlington, SD
  • Average humidity in January: 90%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (68%).

Average rainfall in January
Arlington, SD

Average rainfall in January - Arlington, SD
  • Average rainfall in January: 0.71"

The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is November (0.67").

Average rainfall days in January
Arlington, SD

Average rainfall days in January - Arlington, SD
  • Average rainfall days in January: 3.2 days

The month with the highest number of rainy days is June (19.8 days).
The month with the least rainy days is January (3.2 days).

Average snowfall in January
Arlington, SD

Average snowfall in January - Arlington, SD
  • Average snowfall in January: 4.13"

The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Arlington, SD

Average snowfall days in January - Arlington, SD
  • Average snowfall days in January: 14.4 days

The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Arlington, SD

Average daylight in January / Average sunshine in January - Arlington, SD
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in January: 3h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in January
Arlington, SD

Average sunshine days in January - Arlington, SD
  • Average sunshine days in January: 15.8 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (8.3 days).

Average UV index in January
Arlington, SD

Average UV index in January - Arlington, SD
  • 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
Arlington, SD

Average cloud cover in January - Arlington, SD
  • Average cloud cover in January: 59

The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in January
Arlington, SD

Average visibility in January - Arlington, 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).

Arlington, South Dakota, USA

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