December weather forecast
Tempe, AZ

The Tempe Town Lake of Tempe City, Arizona
The Tempe Town Lake of Tempe City, Arizona

Weather in December

The first month of the winter, December, is also an enjoyable month in Tempe, Arizona, with an average temperature fluctuating between 47.3°F (8.5°C) and 62.8°F (17.1°C).

Temperature

With an average high-temperature of 62.8°F (17.1°C) and an average low-temperature of 47.3°F (8.5°C), December is the coldest month.

Humidity

With an average relative humidity of 44%, December is the most humid month in Tempe, Arizona.

Rainfall

In December, the rain falls for 6.5 days. Throughout December, 0.87" (22mm) of precipitation is accumulated. In Tempe, during the entire year, the rain falls for 57.7 days and collects up to 7.72" (196mm) of precipitation.

Daylight

The month with the shortest days in Tempe, Arizona, is December, with an average of 9h and 59min of daylight.
On the first day of the month, sunrise is at 7:13 am and sunset at 5:19 pm. On the last day of December, in Tempe, sunrise is at 7:31 am and sunset at 5:30 pm MST.

Sunshine

The month with the least sunshine is December, with an average of 6.8h of sunshine.

UV index

With an average maximum UV index of 3, December is the month with the lowest UV index in Tempe. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 3 in December interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the coldest month in Tempe?

The coldest month is December, with an average high-temperature of 62.8°F (17.1°C) and an average low-temperature of 47.3°F (8.5°C).

What is the temperature in December in Tempe?

In Tempe, Arizona, in December, the average high-temperature is 62.8°F (17.1°C), and the average low-temperature is 47.3°F (8.5°C).

What is the most humid month in Tempe?

December is the most humid month, with an average relative humidity of 44%.

What is the average humidity in December in Tempe?

In Tempe, the average relative humidity in December is 44%.

How much does it rain in Tempe in December?

In Tempe, Arizona, during December, the rain falls for 6.5 days and regularly aggregates up to 0.87" (22mm) of precipitation.

What is the month with the shortest days in Tempe?

With an average of 9h and 59min of daylight, December has the shortest days of the year in Tempe, Arizona.

What is the average length of the day in December in Tempe?

In December, the average day length in Tempe, Arizona, is 9h and 59min.

When is the sunrise / sunset in December in Tempe?

On the first day of December in Tempe, sunrise is at 7:13 am and sunset at 5:19 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:30 pm MST.

What is the month with the least sunshine in Tempe?

December has the least sunshine of the year in Tempe, with an average of 6.8h of sunshine.

How many hours of sunshine does Tempe have in December?

In December, the average sunshine duration in Tempe, Arizona, is 6.8h.

When is the lowest UV index in Tempe?

December is the month with the lowest UV index in Tempe, Arizona, with an average maximum UV index of 3.

What is the UV index reading in December in Tempe?

In December, the average daily maximum UV index in Tempe is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Tempe, AZ

Average temperature in December - Tempe, AZ
  • Average high temperature in December: 62.8°F

The warmest month (with the highest average high temperature) is July (102.6°F).
The month with the lowest average high temperature is December (62.8°F).

  • Average low temperature in December: 47.3°F

The month with the highest average low temperature is August (84.4°F).
The coldest month (with the lowest average low temperature) is January (46.9°F).

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Average pressure in December
Tempe, AZ

Average pressure in December - Tempe, AZ
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).

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Average wind speed in December
Tempe, AZ

Average wind speed in December - Tempe, AZ
  • Average wind speed in December: 4.4mph

The windiest months (with the highest average wind speed) are April and May (6.3mph).
The calmest month (with the lowest average wind speed) is December (4.4mph).

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Average humidity in December
Tempe, AZ

Average humidity in December - Tempe, AZ
  • Average humidity in December: 44%

The month with the highest relative humidity is December (44%).
The month with the lowest relative humidity is June (16%).

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Average rainfall in December
Tempe, AZ

Average rainfall in December - Tempe, AZ
  • Average rainfall in December: 0.87"

The wettest month (with the highest rainfall) is July (1.14").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in December
Tempe, AZ

Average rainfall days in December - Tempe, AZ
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is June (1 days).

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

Average daylight in December / Average sunshine in December - Tempe, AZ
  • Average daylight in December: 9h and 59min

The month with the longest days is June (Average daylight: 14h and 20min).
The month with the shortest days is December (Average daylight: 9h and 59min).

  • Average sunshine in December: 6h and 48min

The months with the most sunshine are June and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

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Average sunshine days in December
Tempe, AZ

Average sunshine days in December - Tempe, AZ
  • Average sunshine days in December: 24.1 days

The month with the most sunshine days is May (28.7 days).
The month with the least sunshine days is July (16.8 days).

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Average UV index in December
Tempe, AZ

Average UV index in December - Tempe, AZ
  • Average UV index in December: 3

The months with the highest UV index are May, June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in December
Tempe, AZ

Average cloud cover in December - Tempe, AZ
  • Average cloud cover in December: 21

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in December
Tempe, AZ

Average visibility in December - Tempe, 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).

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