December weather forecast
Colby, WI

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Weather in December

The first month of the winter, December, is also a subzero cold month in Colby, Wisconsin, with an average temperature ranging between min 14°F (-10°C) and max 24.1°F (-4.4°C).

Temperature

The onset of December entails a temperature shift, as the average high-temperature decreases from a wintry 37.6°F (3.1°C) in November to a subzero cold 24.1°F (-4.4°C). An average low-temperature of 14°F (-10°C) is observed in Colby during the December nights.

Humidity

In December, the average relative humidity is 90%.

Rainfall

In Colby, in December, during 3.1 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. In Colby, during the entire year, the rain falls for 102.5 days and collects up to 11.18" (284mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Colby. In Colby, during December, snow falls for 12.5 days and regularly aggregates up to 2.01" (51mm) of snow. In Colby, during the entire year, snow falls for 58.8 days and aggregates up to 10.83" (275mm) of snow.

Daylight

The month with the shortest days in Colby is December, with an average of 8h and 48min of daylight.
On the first day of the month, sunrise is at 7:19 am and sunset at 4:21 pm. On the last day of December, sunrise is at 7:39 am and sunset at 4:30 pm CST.

Sunshine

The average sunshine in December in Colby is 2.8h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

How cold is December in Colby?

Colby in December has an average high-temperature of 24.1°F (-4.4°C) and an average low-temperature of 14°F (-10°C).

What is the average humidity in December in Colby?

In December, the average relative humidity in Colby, Wisconsin, is 90%.

How many days does it rain in December in Colby?

In Colby, in December, during 3.1 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

How many days does it snow in December in Colby?

In Colby, Wisconsin, in December, snow falls for 12.5 days, with typically accumulated 2.01" (51mm) of snow.

What is the month with the shortest days in Colby?

The month with the shortest days in Colby, Wisconsin, is December, with an average of 8h and 48min of daylight.

How many hours of daylight does Colby have in December?

The average day length in December in Colby, Wisconsin, is 8h and 51min.

What time are sunrise and sunset in December in Colby?

In December, on the first day of the month, sunrise is at 7:19 am and sunset at 4:21 pm. On the last day of the month, in Colby, sunrise is at 7:39 am and sunset at 4:30 pm CST.

How many hours of sunshine does Colby have in December?

In December, the average sunshine duration is 2.8h.

When is the lowest UV index in Colby?

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

What is the UV index intensity in December in Colby?

In December, the average daily maximum UV index in Colby is 1. A UV Index reading of 2, and below, represents 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 December
Colby, WI

Average temperature in December - Colby, WI
  • Average high temperature in December: 24.1°F

The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (18.9°F).

  • Average low temperature in December: 14°F

The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (6.4°F).

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Average pressure in December
Colby, WI

Average pressure in December - Colby, WI
  • Average pressure in December: 30.09"Hg

The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in December
Colby, WI

Average wind speed in December - Colby, WI
  • Average wind speed in December: 9.1mph

The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).

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Average humidity in December
Colby, WI

Average humidity in December - Colby, WI
  • Average humidity in December: 90%

The months with the highest relative humidity are January and February (92%).
The months with the lowest relative humidity are April and May (78%).

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Average rainfall in December
Colby, WI

Average rainfall in December - Colby, WI
  • Average rainfall in December: 0.55"

The wettest month (with the highest rainfall) is June (1.61").
The driest month (with the least rainfall) is January (0.35").

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Average rainfall days in December
Colby, WI

Average rainfall days in December - Colby, WI
  • Average rainfall days in December: 3.1 days

The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (1.5 days).

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Average snowfall in December
Colby, WI

Average snowfall in December - Colby, WI
  • Average snowfall in December: 2.01"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Colby, WI

Average snowfall days in December - Colby, WI
  • Average snowfall days in December: 12.5 days

The month with the highest number of snowfall days is January (13.3 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
Colby, WI

Average daylight in December / Average sunshine in December - Colby, WI
  • 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 48min).

  • Average sunshine in December: 2h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).

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Average sunshine days in December
Colby, WI

Average sunshine days in December - Colby, WI
  • Average sunshine days in December: 18.1 days

The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is June (12.4 days).

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Average UV index in December
Colby, WI

Average UV index in December - Colby, WI
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 5).
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
Colby, WI

Average cloud cover in December - Colby, WI
  • Average cloud cover in December: 72

The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 37).

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Average visibility in December
Colby, WI

Average visibility in December - Colby, WI
  • Average visibility in December: 5mi

The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, March, July, August, September and December (5mi).

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Colby, Wisconsin, USA

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