December weather forecast
Austin, CO

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Weather in December

December, the first month of the winter in Austin, is also a wintry month, with temperature in the range of an average low of 18°F (-7.8°C) and an average high of 34.7°F (1.5°C).

Temperature

The arrival of December corresponds with a reduction in the average high-temperature, down from November's chilly 46.2°F (7.9°C) to a cold 34.7°F (1.5°C). During the December nights, an average temperature of 18°F (-7.8°C) is observed in Austin.

Humidity

In Austin, the average relative humidity in December is 74%.

Rainfall

In Austin, during December, the rain falls for 8.5 days and regularly aggregates up to 1.18" (30mm) of precipitation. In Austin, during the entire year, the rain falls for 120.8 days and collects up to 14.06" (357mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 10.4 days and accumulates 5.87" (149mm) of snow.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:11 am and sunset at 4:50 pm. On the last day of December, in Austin, Colorado, sunrise is at 7:29 am and sunset at 5:00 pm MST.

Sunshine

In December, the average sunshine in Austin is 6.5h.

UV index

The months with the lowest UV index in Austin are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 2 during December translates into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is it in Austin in December?

Austin in December has an average high-temperature of 34.7°F (1.5°C) and an average low-temperature of 18°F (-7.8°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is estimated at 80.6°F (27°C).

What is the average humidity in December in Austin?

The average relative humidity in December in Austin, Colorado, is 74%.

How many days does it rain in December in Austin?

In Austin, during December, the rain falls for 8.5 days and regularly aggregates up to 1.18" (30mm) of precipitation.

When does it snow the most in Austin?

December is the month with the most snowfall in Austin, Colorado. Snow falls for 10.4 days and accumulates 5.87" (149mm) of snow.

How many days does it snow in December in Austin?

In Austin, in December, during 10.4 snowfall days, 5.87" (149mm) of snow is typically accumulated.

What is the month with the shortest days in Austin?

December has the shortest days of the year in Austin, with an average of 9h and 30min of daylight.

How many hours of daylight does Austin have in December?

In Austin, the average day length in December is 9h and 31min.

What time are sunrise and sunset in December in Austin?

In December, on the first day of the month, sunrise is at 7:11 am and sunset at 4:50 pm. On the last day of the month, in Austin, Colorado, sunrise is at 7:29 am and sunset at 5:00 pm MST.

How long on average sun shines in December in Austin?

The average sunshine duration in December is 6.5h.

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

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in December in Austin?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Austin, CO

Average temperature in December - Austin, CO
  • Average high temperature in December: 34.7°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (33.1°F).

  • Average low temperature in December: 18°F

The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).

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Average pressure in December
Austin, CO

Average pressure in December - Austin, CO
  • Average pressure in December: 30.19"Hg

The month with the highest atmospheric pressure is January (30.26"Hg).
The month with the lowest atmospheric pressure is May (29.92"Hg).

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Average wind speed in December
Austin, CO

Average wind speed in December - Austin, CO
  • Average wind speed in December: 4.2mph

The windiest month (with the highest average wind speed) is June (7mph).
The calmest month (with the lowest average wind speed) is January (3.9mph).

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Average humidity in December
Austin, CO

Average humidity in December - Austin, CO
  • Average humidity in December: 74%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is June (34%).

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Average rainfall in December
Austin, CO

Average rainfall in December - Austin, CO
  • Average rainfall in December: 1.18"

The wettest month (with the highest rainfall) is August (1.54").
The driest month (with the least rainfall) is June (0.71").

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Average rainfall days in December
Austin, CO

Average rainfall days in December - Austin, CO
  • Average rainfall days in December: 8.5 days

The month with the highest number of rainy days is April (13.8 days).
The month with the least rainy days is June (6.8 days).

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Average snowfall in December
Austin, CO

Average snowfall in December - Austin, CO
  • Average snowfall in December: 5.87"

The month with the highest snowfall is December (5.87").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Austin, CO

Average snowfall days in December - Austin, CO
  • Average snowfall days in December: 10.4 days

The month with the highest number of snowfall days is February (10.5 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
Austin, CO

Average daylight in December / Average sunshine in December - Austin, CO
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 6h and 3min

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

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Average sunshine days in December
Austin, CO

Average sunshine days in December - Austin, CO
  • Average sunshine days in December: 16.2 days

The months with the most sunshine days are June and November (20.4 days).
The month with the least sunshine days is August (13.3 days).

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Average UV index in December
Austin, CO

Average UV index in December - Austin, CO
  • Average UV index in December: 2

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 2).

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Average cloud cover in December
Austin, CO

Average cloud cover in December - Austin, CO
  • Average cloud cover in December: 32

The months with the most cloud cover are January and February (Cloud cover 33).
The month with the least cloud cover is June (Cloud cover 11).

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Average visibility in December
Austin, CO

Average visibility in December - Austin, CO
  • Average visibility in December: 6mi

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

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Austin, Colorado, USA

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