January weather forecast
Gregory, SD

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Weather in January

January, like December, is a freezing cold winter month in Gregory, South Dakota, with an average temperature fluctuating between 15.6°F (-9.1°C) and 28.8°F (-1.8°C).

Temperature

Gregory's coldest weather arrives in January, when temperatures average a high of 28.8°F (-1.8°C) and a low of 15.6°F (-9.1°C).

Humidity

With an average relative humidity of 82%, January is the most humid month in Gregory, South Dakota.

Rainfall

January is the month with the least rainfall in Gregory. Rain falls for 2.7 days and accumulates 0.47" (12mm) of precipitation.

Snowfall

Months with snowfall in Gregory, South Dakota, are January through May, October through December. In Gregory, in January, snow falls for 9.6 days, with typically accumulated 2.64" (67mm) of snow. Throughout the year, in Gregory, South Dakota, there are 39.7 snowfall days, and 14.45" (367mm) of snow is accumulated.

Daylight

In Gregory, the average length of the day in January is 9h and 25min.
On the first day of the month, sunrise is at 8:09 am and sunset at 5:12 pm. On the last day of January, sunrise is at 7:54 am and sunset at 5:47 pm CST.

Sunshine

January has the least sunshine of the year in Gregory, with an average of 4.9h of sunshine.

UV index

In Gregory, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.
Note: In January, a regular UV index of 2 translates into these guidelines:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Frequently asked questions

What is the coldest time of year in Gregory?

January, noted for its average high-temperature of 28.8°F (-1.8°C) and an average low-temperature of 15.6°F (-9.1°C), is considered the coldest month in Gregory, South Dakota.

How cold is it in Gregory in January?

The average high-temperature, in January, in Gregory, is 28.8°F (-1.8°C), while the average low-temperature is 15.6°F (-9.1°C).

What is the most humid month in Gregory?

January is the most humid month, with an average relative humidity of 82%.

What is the average humidity in January in Gregory?

In January, the average relative humidity in Gregory, South Dakota, is 82%.

What is the driest month in Gregory?

The month with the least rainfall is January, when the rain falls for 2.7 days and typically collects 0.47" (12mm) of precipitation.

How many days does it rain in January in Gregory?

In Gregory, South Dakota, during January, the rain falls for 2.7 days and regularly aggregates up to 0.47" (12mm) of precipitation.

How many days does it snow in January in Gregory?

In Gregory, South Dakota, in January, snow falls for 9.6 days, with typically accumulated 2.64" (67mm) of snow.

How many hours of daylight does Gregory have in January?

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

When are sunrise and sunset in January in Gregory?

On the first day of January in Gregory, sunrise is at 8:09 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 5:47 pm CST.

What is the month with the least sunshine in Gregory?

January has the least sunshine of the year in Gregory, with an average of 4.9h of sunshine.

How many hours of sunshine does Gregory have in January?

The average sunshine duration in January in Gregory is 4.9h.

What is the UV index reading in January in Gregory?

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

Average temperature in January - Gregory, SD
  • Average high temperature in January: 28.8°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in January: 15.6°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

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Average pressure in January
Gregory, SD

Average pressure in January - Gregory, 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 (29.84"Hg).

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Average wind speed in January
Gregory, SD

Average wind speed in January - Gregory, SD
  • Average wind speed in January: 11.1mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).

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Average humidity in January
Gregory, SD

Average humidity in January - Gregory, SD
  • Average humidity in January: 82%

The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are August and September (57%).

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Average rainfall in January
Gregory, SD

Average rainfall in January - Gregory, SD
  • Average rainfall in January: 0.47"

The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in January
Gregory, SD

Average rainfall days in January - Gregory, SD
  • Average rainfall days in January: 2.7 days

The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (2.7 days).

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Average snowfall in January
Gregory, SD

Average snowfall in January - Gregory, SD
  • Average snowfall in January: 2.64"

The month with the highest snowfall is December (3.19").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Gregory, SD

Average snowfall days in January - Gregory, 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
Gregory, SD

Average daylight in January / Average sunshine in January - Gregory, 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: 4h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

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Average sunshine days in January
Gregory, SD

Average sunshine days in January - Gregory, SD
  • Average sunshine days in January: 19.7 days

The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.2 days).

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Average UV index in January
Gregory, SD

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in January
Gregory, SD

Average cloud cover in January - Gregory, SD
  • Average cloud cover in January: 47

The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 20).

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Average visibility in January
Gregory, SD

Average visibility in January - Gregory, 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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Gregory, South Dakota, USA

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