January weather forecast
McCook Lake, SD

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Weather in January

January, the same as December, in McCook Lake, South Dakota, is a freezing cold winter month, with an average temperature ranging between max 27°F (-2.8°C) and min 13.1°F (-10.5°C).

Temperature

January, with average temperatures reaching a high of 27°F (-2.8°C) and a low of 13.1°F (-10.5°C), is the coldest month.

Humidity

With an average relative humidity of 84%, January is the most humid month.

Rainfall

In McCook Lake, in January, during 3.8 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In McCook Lake, during the entire year, the rain falls for 122 days and collects up to 21.61" (549mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in McCook Lake. January is the month with the most snowfall. Snow falls for 9.6 days and accumulates 2.95" (75mm) of snow.

Daylight

The average length of the day in January in McCook Lake is 9h and 29min.
On the first day of the month, sunrise is at 7:55 am and sunset at 5:03 pm. On the last day of January, sunrise is at 7:41 am and sunset at 5:37 pm CST.

Sunshine

January has the least sunshine of the year in McCook Lake, South Dakota, with an average of 4.4h of sunshine.

UV index

The month with the lowest UV index in McCook Lake, South Dakota, is January, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 1 during January translates into the following guidance:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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Frequently asked questions

What part of the year is the coldest in McCook Lake?

January tends to be the coldest month in McCook Lake, South Dakota, with temperatures averaging a daily high of 27°F (-2.8°C) and a low of 13.1°F (-10.5°C).

How cold is it in McCook Lake in January?

During January, McCook Lake experiences an average high-temperature of 27°F (-2.8°C) and a low-temperature of 13.1°F (-10.5°C).

What is the most humid month in McCook Lake?

January is the most humid month, with an average relative humidity of 84%.

What is the average humidity in January in McCook Lake?

The average relative humidity in January is 84%.

How many days does it rain in January in McCook Lake?

In McCook Lake, during January, the rain falls for 3.8 days and regularly aggregates up to 0.75" (19mm) of precipitation.

What is the snowiest month in McCook Lake?

The month with the most snowfall is January, when snow falls for 9.6 days and typically aggregates up to 2.95" (75mm) of snow.

How many days does it snow in January in McCook Lake?

In McCook Lake, South Dakota, during January, snow falls for 9.6 days and regularly aggregates up to 2.95" (75mm) of snow.

How many hours of daylight does McCook Lake have in January?

In January, the average day length in McCook Lake is 9h and 29min.

When are sunrise and sunset in January in McCook Lake?

On the first day of January in McCook Lake, South Dakota, sunrise is at 7:55 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:37 pm CST.

What is the month with the least sunshine in McCook Lake?

January has the least sunshine of the year in McCook Lake, South Dakota, with an average of 4.4h of sunshine.

How many hours of sunshine does McCook Lake have in January?

In January, the average sunshine duration in McCook Lake is 4.4h.

What is the month with the lowest UV index in McCook Lake?

With an average maximum UV index of 1, January is the month with the lowest UV index in McCook Lake, South Dakota.

What is the UV index intensity in January in McCook Lake?

In January, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes 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
McCook Lake, SD

Average temperature in January - McCook Lake, SD
  • Average high temperature in January: 27°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in January: 13.1°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).

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Average pressure in January
McCook Lake, SD

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in January
McCook Lake, SD

Average wind speed in January - McCook Lake, SD
  • Average wind speed in January: 10.6mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).

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Average humidity in January
McCook Lake, SD

Average humidity in January - McCook Lake, SD
  • Average humidity in January: 84%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (65%).

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Average rainfall in January
McCook Lake, SD

Average rainfall in January - McCook Lake, SD
  • Average rainfall in January: 0.75"

The wettest months (with the highest rainfall) are May and June (3.03").
The driest month (with the least rainfall) is February (0.67").

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Average rainfall days in January
McCook Lake, SD

Average rainfall days in January - McCook Lake, SD
  • Average rainfall days in January: 3.8 days

The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in January
McCook Lake, SD

Average snowfall in January - McCook Lake, SD
  • Average snowfall in January: 2.95"

The month with the highest snowfall is January (2.95").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
McCook Lake, SD

Average snowfall days in January - McCook Lake, SD
  • Average snowfall days in January: 9.6 days

The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
McCook Lake, SD

Average daylight in January / Average sunshine in January - McCook Lake, SD
  • Average daylight in January: 9h and 3min

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 6min).

  • Average sunshine in January: 4h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in January
McCook Lake, SD

Average sunshine days in January - McCook Lake, SD
  • Average sunshine days in January: 19.2 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (9.7 days).

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Average UV index in January
McCook Lake, SD

Average UV index in January - McCook Lake, 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).

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Average cloud cover in January
McCook Lake, SD

Average cloud cover in January - McCook Lake, SD
  • Average cloud cover in January: 52

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 26).

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Average visibility in January
McCook Lake, SD

Average visibility in January - McCook Lake, 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).

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McCook Lake, South Dakota, USA

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