January weather forecast
Frankfort, SD

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Weather in January

January, the same as December, in Frankfort, South Dakota, is another subzero cold winter month, with an average temperature fluctuating between 7.9°F (-13.4°C) and 22.5°F (-5.3°C).

Temperature

In Frankfort, the lowest average temperatures are observed in January, with a high of 22.5°F (-5.3°C) and a low of 7.9°F (-13.4°C).

Humidity

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

Rainfall

January is the month with the least rainfall. Rain falls for 2.5 days and accumulates 0.51" (13mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In January, it is snowing for 9.8 days. Throughout January, 3.31" (84mm) of snow is accumulated. In Frankfort, during the entire year, snow falls for 43.7 days and aggregates up to 18.66" (474mm) of snow.

Daylight

In Frankfort, the average length of the day in January is 9h and 15min.
On the first day of January, sunrise is at 8:10 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:39 pm CST.

Sunshine

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

UV index

January and February, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index, 1 in January, converts into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

January, noted for its average high-temperature of 22.5°F (-5.3°C) and an average low-temperature of 7.9°F (-13.4°C), is considered the coldest month.

How cold is it in Frankfort in January?

In January, in Frankfort, the average high-temperature is 22.5°F (-5.3°C), and the average low-temperature is 7.9°F (-13.4°C).

What is the most humid month?

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

What is the average humidity in January?

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 2.5 days and typically collects 0.51" (13mm) of precipitation.

How many days does it rain in January?

In Frankfort, in January, it is raining for 2.5 days, with typically 0.51" (13mm) of accumulated precipitation.

How many days does it snow in January?

In Frankfort, during January, snow falls for 9.8 days and regularly aggregates up to 3.31" (84mm) of snow.

How many hours of daylight does Frankfort have in January?

The average day length in January is 9h and 15min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 8:10 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:39 pm CST.

What is the month with the least sunshine?

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

How long on average sun shines in January?

In Frankfort, South Dakota, the average sunshine duration in January is 4.1h.

When is the lowest UV index?

The months with the lowest UV index are January and February, 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 reading of 2, and below, represents a low health threat 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
Frankfort, SD

Average temperature in January - Frankfort, SD
  • Average high temperature in January: 22.5°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (22.5°F).

  • Average low temperature in January: 7.9°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).

Average pressure in January
Frankfort, SD

Average pressure in January - Frankfort, 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
Frankfort, SD

Average wind speed in January - Frankfort, SD
  • Average wind speed in January: 9.8mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.5mph).

Average humidity in January
Frankfort, SD

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

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

Average rainfall in January
Frankfort, SD

Average rainfall in January - Frankfort, SD
  • Average rainfall in January: 0.51"

The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is January (0.51").

Average rainfall days in January
Frankfort, SD

Average rainfall days in January - Frankfort, SD
  • Average rainfall days in January: 2.5 days

The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is February (1.9 days).

Average snowfall in January
Frankfort, SD

Average snowfall in January - Frankfort, SD
  • Average snowfall in January: 3.31"

The month with the highest snowfall is February (4.09").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
Frankfort, SD

Average snowfall days in January - Frankfort, SD
  • Average snowfall days in January: 9.8 days

The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Frankfort, 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: 4h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in January
Frankfort, SD

Average sunshine days in January - Frankfort, SD
  • Average sunshine days in January: 19.5 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (12.2 days).

Average UV index in January
Frankfort, SD

Average UV index in January - Frankfort, 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 February (UV index 1).

Average cloud cover in January
Frankfort, SD

Average cloud cover in January - Frankfort, SD
  • Average cloud cover in January: 55

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 22).

Average visibility in January
Frankfort, SD

Average visibility in January - Frankfort, 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).

Frankfort, South Dakota, USA

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