January weather forecast
Edgemont, SD

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Weather in January

The year begins with some of the coldest temperatures in Edgemont, South Dakota, as winter engulfs the small town. High levels of occasionally snowfall combined with scattered rainfall days and elevated humidity lead to frosty conditions. Daylight is minimal, hinting at shorter days and longer nights typical of this time of year. The total sunshine hours as well as daylight hours, however, begin to gradually increase as the month progresses. January records the highest average snowfall of 2.56" (65mm) and the coolest average high temperature of 33.4°F (0.8°C).

Temperature

The transition into January in Edgemont is marked with an average high-temperature of a still icy 33.4°F (0.8°C), showing an insignificant shift from December's 32.4°F (0.2°C). Throughout January, Edgemont witnesses a consistent average low-temperature of 18.9°F (-7.3°C).

Humidity

January is the most humid month, with an average relative humidity of 75%.

Rainfall

The month with the least rainfall is January, when the rain falls for 4 days and typically collects 0.39" (10mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. In Edgemont, in January, snow falls for 8.8 days, with typically accumulated 2.56" (65mm) of snow. In Edgemont, during the entire year, snow falls for 49.2 days and aggregates up to 23.19" (589mm) of snow.

Daylight

In January, the average length of the day is 9h and 25min.
On the first day of January, sunrise is at 7:27 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:05 pm MST.

Sunshine

In Edgemont, the average sunshine in January is 6.1h.

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 value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 2 in January translates into these instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is January?

An average high-temperature, in January, in Edgemont, is 33.4°F (0.8°C) and the average low-temperature is 18.9°F (-7.3°C).

What is the most humid month?

January is the most humid month, with an average relative humidity of 75%.

What is the average humidity in January?

In January, the average relative humidity in Edgemont is 75%.

What is the driest month?

January is the month with the least rainfall. Rain falls for 4 days and accumulates 0.39" (10mm) of precipitation.

How much does it rain in January?

In Edgemont, South Dakota, during January, the rain falls for 4 days and regularly aggregates up to 0.39" (10mm) of precipitation.

How many days does it snow in January in Edgemont?

In Edgemont, in January, snow falls for 8.8 days, with typically accumulated 2.56" (65mm) of snow.

What is the average length of the day in January?

In January, the average day length is 9h and 25min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:27 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:05 pm MST.

How many hours of sunshine does Edgemont have in January?

In January, the average sunshine duration is 6.1h.

What are the months with the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in January in Edgemont?

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Edgemont, SD

Average temperature in January - Edgemont, SD
  • Average high temperature in January: 33.4°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is December (32.4°F).

  • Average low temperature in January: 18.9°F

The month with the highest average low temperature is July (63.9°F).
The coldest months (with the lowest average low temperature) are February and December (18.5°F).

Average pressure in January
Edgemont, SD

Average pressure in January - Edgemont, SD
  • Average pressure in January: 30.13"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in January
Edgemont, SD

Average wind speed in January - Edgemont, SD
  • Average wind speed in January: 9.4mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).

Average humidity in January
Edgemont, SD

Average humidity in January - Edgemont, SD
  • Average humidity in January: 75%

The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is August (47%).

Average rainfall in January
Edgemont, SD

Average rainfall in January - Edgemont, SD
  • Average rainfall in January: 0.39"

The wettest month (with the highest rainfall) is June (2.87").
The driest month (with the least rainfall) is January (0.39").

Average rainfall days in January
Edgemont, SD

Average rainfall days in January - Edgemont, SD
  • Average rainfall days in January: 4 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is December (3.5 days).

Average snowfall in January
Edgemont, SD

Average snowfall in January - Edgemont, SD
  • Average snowfall in January: 2.56"

The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July and August (0").

Average snowfall days in January
Edgemont, SD

Average snowfall days in January - Edgemont, SD
  • Average snowfall days in January: 8.8 days

The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in January: 6h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).

Average sunshine days in January
Edgemont, SD

Average sunshine days in January - Edgemont, SD
  • Average sunshine days in January: 20.3 days

The month with the most sunshine days is December (21.4 days).
The month with the least sunshine days is May (11.2 days).

Average UV index in January
Edgemont, SD

Average UV index in January - Edgemont, SD
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in January
Edgemont, SD

Average cloud cover in January - Edgemont, SD
  • Average cloud cover in January: 36

The month with the most cloud cover is February (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 17).

Average visibility in January
Edgemont, SD

Average visibility in January - Edgemont, SD
  • 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).

Edgemont, South Dakota, USA

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