December weather forecast
Sisseton, SD

Weather in December

December, the first month of the winter, in Sisseton, is also a subzero cold month, with average temperature fluctuating between 23.5°F (-4.7°C) and 12.6°F (-10.8°C).

Temperature

In Sisseton, the average high-temperature plummets, from a cold 39.6°F (4.2°C) in November, to a subzero cold 23.5°F (-4.7°C). The average low-temperature, in Sisseton, South Dakota, is 12.6°F (-10.8°C).

Humidity

The average relative humidity in Sisseton is 86%.

Rainfall

In Sisseton, during December, the rain falls for 3.4 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Sisseton, during the entire year, the rain falls for 107.9 days and collects up to 20.63" (524mm) of precipitation.

Snowfall

Months with snowfall in Sisseton are January through May, October through December. The month with the most snowfall is December when snow falls for 11.5 days and typically aggregates up to 4.29" (109mm) of snow.

Daylight

The month with the shortest days is December, with an average of 8.8h of daylight.

Sunshine

The average sunshine in December is 4h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in December in Sisseton?

The average relative humidity in December in Sisseton, South Dakota, is 86%.

How much does it rain in Sisseton in December?

In December, the rain falls for 3.4 days. Throughout December, 0.94" (24mm) of precipitation is accumulated.

What is the snowiest month in Sisseton?

The month with the most snowfall in Sisseton, South Dakota, is December when snow falls for 11.5 days and typically aggregates up to 4.29" (109mm) of snow.

How much does it snow in Sisseton in December?

In Sisseton, during December, snow falls for 11.5 days and regularly aggregates up to 4.29" (109mm) of snow.

What is the month with the shortest days in Sisseton?

The month with the shortest days in Sisseton, South Dakota, is December, with an average of 8.8h of daylight.

What is the average length of the day in December in Sisseton?

In Sisseton, South Dakota, the average length of the day in December is 8.8h.

How long on average sun shines in December in Sisseton?

The average sunshine in December is 4h.

When is the lowest UV index in Sisseton?

December is the month with the lowest UV index in Sisseton, with an average maximum UV index of 1.

How high is the UV index in December in Sisseton?

In December, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in December
Sisseton, SD

Average temperature in December - Sisseton, SD
  • Average high temperature in December: 23.5°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (19°F).

  • Average low temperature in December: 12.6°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).

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Average pressure in December
Sisseton, SD

Average pressure in December - Sisseton, SD
  • Average pressure in December: 30.12"

The month with the highest atmospheric pressure is February (30.17").
The month with the lowest atmospheric pressure is June (29.86").

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Average wind speed in December
Sisseton, SD

Average wind speed in December - Sisseton, SD
  • Average wind speed in December: 10.7mph

The windiest months (with the highest average wind speed) are April and October (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).

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Average humidity in December
Sisseton, SD

Average humidity in December - Sisseton, SD
  • Average humidity in December: 86%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is September (65%).

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Average rainfall in December
Sisseton, SD

Average rainfall in December - Sisseton, SD
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in December
Sisseton, SD

Average rainfall days in December - Sisseton, SD
  • Average rainfall days in December: 3.4 days

The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (1.6 days).

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Average snowfall in December
Sisseton, SD

Average snowfall in December - Sisseton, SD
  • Average snowfall in December: 4.29"

The month with the highest snowfall is December (4.29").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Sisseton, SD

Average snowfall days in December - Sisseton, SD
  • Average snowfall days in December: 11.5 days

The month with the highest number of snowfall days is December (11.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Sisseton, SD

Average daylight in December / Average sunshine in December - Sisseton, SD
  • Average daylight in December: 8.8h

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in December: 4h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is January (Average sunshine: 3.7h).

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Average sunshine days in December
Sisseton, SD

Average sunshine days in December - Sisseton, SD
  • Average sunshine days in December: 17.6 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in December
Sisseton, SD

Average UV index in December - Sisseton, SD
  • Average UV index in December: 1

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

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Average cloud cover in December
Sisseton, SD

Average cloud cover in December - Sisseton, SD
  • Average cloud cover in December: 57

The month with the most cloud cover is January (Cloud cover 60).
Months with the least cloud cover are July and August (Cloud cover 25).

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Average visibility in December
Sisseton, SD

Average visibility in December - Sisseton, SD
  • Average visibility in December: 6mi

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).

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