December weather forecast
Chaska, MN

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Weather in December

December, the first month of the winter in Chaska, is also a subzero cold month, with an average temperature varying between 15.3°F (-9.3°C) and 25.5°F (-3.6°C).

Temperature

December's onset brings a clear reduction in the average high-temperature, falling from a wintry 40.1°F (4.5°C) in November to a subzero cold 25.5°F (-3.6°C). Chaska encounters an average low-temperature of 15.3°F (-9.3°C) during December nights.

Humidity

The average relative humidity in December in Chaska is 87%.

Rainfall

In Chaska, during December, the rain falls for 3.2 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, there are 97.7 rainfall days, and 9.61" (244mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Chaska are January through April, October through December. In December, it is snowing for 10.4 days. Throughout December, 1.65" (42mm) of snow is accumulated. Throughout the year, there are 49.3 snowfall days, and 8.74" (222mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Chaska, Minnesota, with an average of 8h and 54min of daylight.
On the first day of the month, sunrise is at 7:32 am and sunset at 4:34 pm. On the last day of December, in Chaska, sunrise is at 7:51 am and sunset at 4:43 pm CST.

Sunshine

In December, the average sunshine is 3.4h.

UV index

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 1 during December translates into these guidelines:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Frequently asked questions

How cold is December in Chaska?

The average high-temperature and low-temperature during December are 25.5°F (-3.6°C) and 15.3°F (-9.3°C) respectively. In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 86°F (30°C).

What is the average humidity in December in Chaska?

The average relative humidity in December in Chaska is 87%.

How many days does it rain in December in Chaska?

In Chaska, Minnesota, during December, the rain falls for 3.2 days and regularly aggregates up to 0.43" (11mm) of precipitation.

How many days does it snow in December in Chaska?

In December, it is snowing for 10.4 days. Throughout December, 1.65" (42mm) of snow is accumulated.

What is the month with the shortest days in Chaska?

December has the shortest days of the year in Chaska, Minnesota, with an average of 8h and 54min of daylight.

How many hours of daylight does Chaska have in December?

In December, the average day length in Chaska is 8h and 52min.

When is the sunrise / sunset in December in Chaska?

On the first day of December in Chaska, Minnesota, sunrise is at 7:32 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 4:43 pm CST.

How long on average sun shines in December in Chaska?

The average sunshine duration in December in Chaska is 3.4h.

What is the month with the lowest UV index in Chaska?

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

How high is the UV index in December in Chaska?

In December, the average daily maximum UV index in Chaska is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to 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 December
Chaska, MN

Average temperature in December - Chaska, MN
  • Average high temperature in December: 25.5°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (20.5°F).

  • Average low temperature in December: 15.3°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).

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Average pressure in December
Chaska, MN

Average pressure in December - Chaska, MN
  • Average pressure in December: 30.11"Hg

The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in December
Chaska, MN

Average wind speed in December - Chaska, MN
  • Average wind speed in December: 8mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

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Average humidity in December
Chaska, MN

Average humidity in December - Chaska, MN
  • Average humidity in December: 87%

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and October (71%).

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Average rainfall in December
Chaska, MN

Average rainfall in December - Chaska, MN
  • Average rainfall in December: 0.43"

The wettest month (with the highest rainfall) is June (1.57").
The driest month (with the least rainfall) is January (0.24").

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Average rainfall days in December
Chaska, MN

Average rainfall days in December - Chaska, MN
  • Average rainfall days in December: 3.2 days

The month with the highest number of rainy days is June (14.4 days).
The month with the least rainy days is February (1.4 days).

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Average snowfall in December
Chaska, MN

Average snowfall in December - Chaska, MN
  • Average snowfall in December: 1.65"

The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Chaska, MN

Average snowfall days in December - Chaska, MN
  • Average snowfall days in December: 10.4 days

The month with the highest number of snowfall days is January (11.8 days).
The 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
Chaska, MN

Average daylight in December / Average sunshine in December - Chaska, MN
  • Average daylight in December: 8h and 5min

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 December: 3h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

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Average sunshine days in December
Chaska, MN

Average sunshine days in December - Chaska, MN
  • Average sunshine days in December: 21.5 days

The months with the most sunshine days are October, November and December (21.5 days).
The month with the least sunshine days is June (13.3 days).

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Average UV index in December
Chaska, MN

Average UV index in December - Chaska, MN
  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in December
Chaska, MN

Average cloud cover in December - Chaska, MN
  • Average cloud cover in December: 64

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in December
Chaska, MN

Average visibility in December - Chaska, MN
  • Average visibility in December: 5mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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Chaska, Minnesota, USA

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