January weather forecast
Rudolph, SD

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Weather in January

January, the same as December, in Rudolph, South Dakota, is another subzero cold winter month, with an average temperature varying between 6.3°F (-14.3°C) and 20.7°F (-6.3°C).

Temperature

January is Rudolph's coldest month, registering average high temperatures of 20.7°F (-6.3°C) and lows of 6.3°F (-14.3°C).

Humidity

With an average relative humidity of 88%, January is the most humid month.

Rainfall

The month with the least rainfall is January, when the rain falls for 3 days and typically collects 0.59" (15mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall is January, when snow falls for 13 days and typically aggregates up to 3.82" (97mm) of snow.

Daylight

In January, the average length of the day in Rudolph is 9h and 13min.
On the first day of the month, sunrise is at 8:13 am and sunset at 5:01 pm. On the last day of January, sunrise is at 7:55 am and sunset at 5:39 pm CST.

Sunshine

With an average of 3.9h of sunshine, January has the least sunshine of the year.

UV index

The months with the lowest UV index are January, February and November, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 1 during January leads to these advisories:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

Rudolph experiences its lowest temperatures in January, with an average peak of 20.7°F (-6.3°C) and a low of 6.3°F (-14.3°C).

How cold is January?

In January, the average high-temperature and low-temperature are 20.7°F (-6.3°C) and 6.3°F (-14.3°C) respectively.

What is the most humid month?

January is the most humid month, with an average relative humidity of 88%.

What is the average humidity in January?

In Rudolph, the average relative humidity in January is 88%.

What is the driest month?

The month with the least rainfall is January, when the rain falls for 3 days and typically collects 0.59" (15mm) of precipitation.

How many days does it rain in January?

In Rudolph, in January, it is raining for 3 days, with typically 0.59" (15mm) of accumulated precipitation.

When does it snow the most?

January is the month with the most snowfall. Snow falls for 13 days and accumulates 3.82" (97mm) of snow.

How many days does it snow in January?

In Rudolph, South Dakota, in January, snow falls for 13 days, with typically accumulated 3.82" (97mm) of snow.

What is the average length of the day in January?

The average day length in January is 9h and 13min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 8:13 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 5:39 pm CST.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.9h of sunshine.

How many hours of sunshine does Rudolph have in January?

The average sunshine duration in January in Rudolph is 3.9h.

What are the months with the lowest UV index?

January, February and November, with an average maximum UV index of 1, are months with the lowest UV index in Rudolph.

What is the UV index reading in January?

In January, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Rudolph, SD

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

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in January: 6.3°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 (6.3°F).

Average pressure in January
Rudolph, SD

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

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in January
Rudolph, SD

Average wind speed in January - Rudolph, SD
  • Average wind speed in January: 9.5mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

Average humidity in January
Rudolph, SD

Average humidity in January - Rudolph, SD
  • Average humidity in January: 88%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (60%).

Average rainfall in January
Rudolph, SD

Average rainfall in January - Rudolph, SD
  • Average rainfall in January: 0.59"

The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in January
Rudolph, SD

Average rainfall days in January - Rudolph, SD
  • Average rainfall days in January: 3 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (2 days).

Average snowfall in January
Rudolph, SD

Average snowfall in January - Rudolph, SD
  • Average snowfall in January: 3.82"

The month with the highest snowfall is January (3.82").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Rudolph, SD

Average snowfall days in January - Rudolph, SD
  • Average snowfall days in January: 13 days

The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Rudolph, 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: 3h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in January
Rudolph, SD

Average sunshine days in January - Rudolph, SD
  • Average sunshine days in January: 17.2 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (12.7 days).

Average UV index in January
Rudolph, SD

Average UV index in January - Rudolph, 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, February and November (UV index 1).

Average cloud cover in January
Rudolph, SD

Average cloud cover in January - Rudolph, SD
  • Average cloud cover in January: 57

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 23).

Average visibility in January
Rudolph, SD

Average visibility in January - Rudolph, 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).

Rudolph, South Dakota, USA

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