December weather forecast
Mount Lemmon, AZ

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Mount Lemmon Ski Valley from atop the Mount Lemmon, Arizona
Mount Lemmon Ski Valley from atop the Mount Lemmon, Arizona

Weather in December

December weather in Mount Lemmon, Arizona, encapsulates the arrival of the year-end winter cycle. With temperatures dropping to their yearly lows, the environment exudes a cozy, holiday spirit. Snowfall plays a major role, accumulating to 11" (279mm) and transforming the landscape into a winter wonderland. January will follow suit with similar frosty weather, while November in contrast, stands significantly warmer with lesser snowfall. Amidst the hush of winter, Mount Lemmon sparkles under the twinkling holiday lights, closing the annual weather cycle with a chill.

Temperature

Mount Lemmon in December undergoes a slight reduction in the average high-temperature, shifting from November's mild 56.3°F (13.5°C) to a cool 50.5°F (10.3°C). Mount Lemmon experiences a consistent, yet significant, drop from daily highs to a low-temperature of 24.3°F (-4.3°C) throughout December.

Rainfall

In Mount Lemmon, in December, it is raining for 5 days, with typically 2.6" (66mm) of accumulated precipitation. In Mount Lemmon, during the entire year, the rain falls for 59 days and collects up to 29.57" (751mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. Throughout December, in Mount Lemmon, Arizona, 10.98" (279mm) of snow is accumulated. In Mount Lemmon, during the entire year, snow aggregates up to 64.92" (1649mm).

Daylight

With an average of 10h and 6min of daylight, December has the shortest days of the year.
On the first day of December in Mount Lemmon, sunrise is at 7:07 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:28 pm MST.

Sunshine

January and December, with an average of 7.8h of sunshine, are months with the least sunshine in Mount Lemmon.

Frequently asked questions

What is the temperature in December in Mount Lemmon?

The high-temperature, in December, in Mount Lemmon, is 50.5°F (10.3°C), while the low-temperature averages to 24.3°F (-4.3°C).

How much does it rain in Mount Lemmon in December?

In Mount Lemmon, in December, during 5 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

How much does it snow in Mount Lemmon in December?

During December, Mount Lemmon regularly aggregates up to 10.98" (279mm) of snow.

What is the month with the shortest days in Mount Lemmon?

With an average of 10h and 6min of daylight, December has the shortest days of the year in Mount Lemmon.

What is the average length of the day in December in Mount Lemmon?

In December, the average day length in Mount Lemmon, Arizona, is 10h and 4min.

When is the sunrise / sunset in December in Mount Lemmon?

On the first day of December in Mount Lemmon, sunrise is at 7:07 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:28 pm MST.

What is the month with the least sunshine in Mount Lemmon?

January and December, with an average of 7.8h of sunshine, are months with the least sunshine in Mount Lemmon, Arizona.

How many hours of sunshine does Mount Lemmon have in December?

In Mount Lemmon, the average sunshine duration in December is 7.8h.

Average temperature in December
Mount Lemmon, AZ

Average temperature in December - Mount Lemmon, AZ
  • Average high temperature in December: 50.6°F

The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is February (48.3°F).

  • Average low temperature in December: 24.3°F

The months with the highest average low temperature are July and August (49.8°F).
The coldest month (with the lowest average low temperature) is February (21.8°F).

Average rainfall in December
Mount Lemmon, AZ

Average rainfall in December - Mount Lemmon, AZ
  • Average rainfall in December: 2.6"

The wettest month (with the highest rainfall) is August (7").
The driest month (with the least rainfall) is May (0.3").

Average rainfall days in December
Mount Lemmon, AZ

Average rainfall days in December - Mount Lemmon, AZ
  • Average rainfall days in December: 5 days

The month with the highest number of rainy days is August (11 days).
The months with the least rainy days are May and June (2 days).

Average snowfall in December
Mount Lemmon, AZ

Average snowfall in December - Mount Lemmon, AZ
  • Average snowfall in December: 11"

The month with the highest snowfall is February (20.4").
The months with the least snowfall are May, June, July, August and September (0").

Average daylight in December /
Average sunshine in December
Mount Lemmon, AZ

Average daylight in December / Average sunshine in December - Mount Lemmon, AZ
  • Average daylight in December: 10h and 1min

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 5min

The month with the most sunshine is June (Average sunshine: 12h and 24min).
The months with the least sunshine are January and December (Average sunshine: 7h and 48min).

Mount Lemmon, Arizona, USA

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