December weather forecast
Cottage Grove, MN

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Weather in December

In December, Cottage Grove sees the official beginning of winter. The city returns to its frozen canvas state, with temperatures dipping to freezing points. Snowfall makes a comeback, reaching up to 4.57" (116mm), just in time for a white Christmas. Despite the cold, the city glistens with holiday cheer, and the starry nights sparkle even more against the white snow-clad scenery. December brings to close the yearly weather cycle, encapsulating the magic of winter and the warmth of holiday celebrations.

Temperature

December's onset in Cottage Grove witnesses a marked shift in the average high-temperature, moving from a cold 40.1°F (4.5°C) in November to a freezing cold 25.5°F (-3.6°C). During December, the average low-temperature is a still subzero cold 15.3°F (-9.3°C).

Humidity

In December, the average relative humidity is 88%.

Rainfall

In Cottage Grove, Minnesota, in December, during 4.5 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. Throughout the year, there are 128.1 rainfall days, and 22.83" (580mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Cottage Grove, Minnesota. In Cottage Grove, during December, snow falls for 14.3 days and regularly aggregates up to 4.57" (116mm) of snow. Throughout the year, in Cottage Grove, there are 67.4 snowfall days, and 24.33" (618mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Cottage Grove, with an average of 8h and 54min of daylight.
On the first day of the month, sunrise is at 7:29 am and sunset at 4:32 pm. On the last day of December, in Cottage Grove, sunrise is at 7:49 am and sunset at 4:40 pm CST.

Sunshine

The average sunshine in December 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 of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high daily UV index of 1 during December translates into the following directions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is December in Cottage Grove?

The high-temperature, in December, in Cottage Grove, is 25.5°F (-3.6°C), while the low-temperature averages to 15.3°F (-9.3°C). In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 84.2°F (29°C).

What is the average humidity in December in Cottage Grove?

In December, the average relative humidity in Cottage Grove is 88%.

How much does it rain in Cottage Grove in December?

In Cottage Grove, Minnesota, in December, during 4.5 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

How much does it snow in Cottage Grove in December?

In Cottage Grove, during December, snow falls for 14.3 days and regularly aggregates up to 4.57" (116mm) of snow.

What is the month with the shortest days in Cottage Grove?

With an average of 8h and 54min of daylight, December has the shortest days of the year in Cottage Grove, Minnesota.

How many hours of daylight does Cottage Grove have in December?

The average day length in December in Cottage Grove is 8h and 52min.

When are sunrise and sunset in December in Cottage Grove?

In December, on the first day of the month, sunrise is at 7:29 am and sunset at 4:32 pm. On the last day of the month, in Cottage Grove, sunrise is at 7:49 am and sunset at 4:40 pm CST.

How many hours of sunshine does Cottage Grove have in December?

The average sunshine duration in December in Cottage Grove is 3.4h.

What is the month with the lowest UV index in Cottage Grove?

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

What is the UV index reading in December in Cottage Grove?

In December, the average daily maximum UV index in Cottage Grove, Minnesota, is 1. A UV Index reading of 2, and below, represents a low health threat from unsafe 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 December
Cottage Grove, MN

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

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in December: 15.3°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).

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Average pressure in December
Cottage Grove, MN

Average pressure in December - Cottage Grove, MN
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is 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
Cottage Grove, MN

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

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in December
Cottage Grove, MN

Average humidity in December - Cottage Grove, MN
  • Average humidity in December: 88%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in December
Cottage Grove, MN

Average rainfall in December - Cottage Grove, MN
  • Average rainfall in December: 1.26"

The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in December
Cottage Grove, MN

Average rainfall days in December - Cottage Grove, MN
  • Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (3 days).

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Average snowfall in December
Cottage Grove, MN

Average snowfall in December - Cottage Grove, MN
  • Average snowfall in December: 4.57"

The month with the highest snowfall is February (5.91").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Cottage Grove, MN

Average snowfall days in December - Cottage Grove, MN
  • Average snowfall days in December: 14.3 days

The month with the highest number of snowfall days is January (15.8 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
Cottage Grove, MN

Average daylight in December / Average sunshine in December - Cottage Grove, 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 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

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Average sunshine days in December
Cottage Grove, MN

Average sunshine days in December - Cottage Grove, MN
  • Average sunshine days in December: 15.9 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (10.4 days).

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Average UV index in December
Cottage Grove, MN

Average UV index in December - Cottage Grove, MN
  • Average UV index in December: 1

The month with the highest UV index is 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
Cottage Grove, MN

Average cloud cover in December - Cottage Grove, MN
  • Average cloud cover in December: 65

The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 32).

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Average visibility in December
Cottage Grove, MN

Average visibility in December - Cottage Grove, 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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Cottage Grove, Minnesota, USA

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