December weather forecastVail, AZ

December

Weather in December

December, the first month of the winter in Vail, is still a refreshing month, with temperature in the range of an average high of 60.8°F (16°C) and an average low of 43°F (6.1°C).

Temperature

The coldest period is December, when temperatures fluctuate between an average high of 60.8°F (16°C) and a low of 43°F (6.1°C).

Humidity

With an average relative humidity of 45%, December is the most humid month.

Rainfall

In Vail, in December, during 6.2 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. Throughout the year, in Vail, there are 66.1 rainfall days, and 7.95" (202mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall in Vail.

Daylight

The month with the shortest days in Vail is December, with an average of 10h and 6min of daylight.
On the first day of the month, sunrise is at 7:06 am and sunset at 5:18 pm. On the last day of December, in Vail, sunrise is at 7:23 am and sunset at 5:29 pm MST.

Sunshine

With an average of 7h of sunshine, December has the least sunshine of the year.

UV index

The months with the lowest UV index are November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 3 during December translates into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.

Updated: Feb 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

December is the month when Vail, Arizona, experiences its coldest temperatures, averaging a high of 60.8°F (16°C) and a low of 43°F (6.1°C).

The high-temperature in Vail during December is 60.8°F (16°C) and the low-temperature is 43°F (6.1°C). The average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in September is estimated at 89.6°F (32°C).

December is the most humid month, with an average relative humidity of 45%.

The average relative humidity in December in Vail, Arizona, is 45%.

In December, in Vail, the rain falls for 6.2 days. Throughout December, 0.83" (21mm) of precipitation is accumulated.

In Vail, snow does not fall in February through December.

In Vail, in December, it doesn't snow. In January, it regularly snows.

The month with the shortest days is December, with an average of 10h and 6min of daylight.

In Vail, the average day length in December is 10h and 6min.

On the first day of December, sunrise is at 7:06 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:29 pm MST.

December has the least sunshine of the year in Vail, Arizona, with an average of 7h of sunshine.

In Vail, the average sunshine duration in December is 7h.

The months with the lowest UV index in Vail are November and December, with an average maximum UV index of 3.

The average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

70.9°F

60.8°F

61.7°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.4mph

7mph

6.6mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

25.5

23.9

26.1

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Vail, AZ

Average high temperature in December: 60.8°F

The warmest month (with the highest average high temperature) is June (96.6°F).
The month with the lowest average high temperature is December (60.8°F).

Average low temperature in December: 43°F

The month with the highest average low temperature is July (77°F).
The coldest months (with the lowest average low temperature) are January and December (43°F).

Average pressure in December
Vail, AZ

Average pressure in December: 30.05"Hg

The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in December
Vail, AZ

Average wind speed in December: 6.3mph

The windiest months (with the highest average wind speed) are April and May (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Vail, AZ

Average humidity in December: 45%

The month with the highest relative humidity is December (45%).
The month with the lowest relative humidity is June (19%).

Average rainfall in December
Vail, AZ

Average rainfall in December: 0.83"

The wettest month (with the highest rainfall) is July (1.42").
The driest month (with the least rainfall) is May (0.08").

Average rainfall days in December
Vail, AZ

Average rainfall days in December: 6.2 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is May (1.3 days).

Average snowfall in December
Vail, AZ

Average snowfall in December: 0"

The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in December
Vail, AZ

Average snowfall days in December: 0 days

The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in December /
Average sunshine in December
Vail, AZ

Average daylight in December: 10h and 6min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

Average sunshine in December: 7h and 0min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

Average sunshine days in December
Vail, AZ

Average sunshine days in December: 23.9 days

The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (13.3 days).

Average UV index in December
Vail, AZ

Average UV index in December: 3

The month with the highest UV index is June (UV index 8).
The months with the lowest UV index are November and December (UV index 3).

Average cloud cover in December
Vail, AZ

Average cloud cover in December: 19

The month with the most cloud cover is December (Cloud cover 19).
The months with the least cloud cover are May and June (Cloud cover 7).

Average visibility in December
Vail, AZ

Average visibility in December: 6mi

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