December weather forecast
Scottsdale, AZ

A scenic waterfront canal running through Scottsdale, Arizona
A scenic waterfront canal running through Scottsdale, Arizona

Weather in December

December, the first month of the winter, in Scottsdale, is still a comfortable month, with average temperature varying between 62.8°F (17.1°C) and 47.3°F (8.5°C).

Temperature

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

Humidity

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

Rainfall

In Scottsdale, in December, it is raining for 6.5 days, with typically 0.87" (22mm) of accumulated precipitation. In Scottsdale, during the entire year, the rain falls for 57.7 days and collects up to 7.72" (196mm) of precipitation.

Daylight

December has the shortest days of the year in Scottsdale, Arizona, with an average of 10h of daylight.

Sunshine

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

UV index

The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 3 in December interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the coldest month in Scottsdale?

December is the coldest month in Scottsdale, 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 most humid month in Scottsdale?

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

What is the average humidity in December in Scottsdale?

The average relative humidity in December in Scottsdale is 44%.

How much does it rain in Scottsdale in December?

In Scottsdale, Arizona, in December, it is raining for 6.5 days, with typically 0.87" (22mm) of accumulated precipitation.

What is the month with the shortest days in Scottsdale?

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

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

In December, the average length of the day in Scottsdale is 10h.

What is the month with the least sunshine in Scottsdale?

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

How long on average sun shines in December in Scottsdale?

The average sunshine in December is 6.8h.

When is the lowest UV index in Scottsdale?

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

What is the UV index intensity in December in Scottsdale?

In December, the average daily maximum UV index in Scottsdale is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in December
Scottsdale, AZ

Average temperature in December - Scottsdale, AZ
  • Average high temperature in December: 17.1°C

The warmest month (with the highest average high temperature) is July (39.2°C).
The month with the lowest average high temperature is December (17.1°C).

  • Average low temperature in December: 8.5°C

The month with the highest average low temperature is August (29.1°C).
The coldest month (with the lowest average low temperature) is January (8.3°C).

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Average pressure in December
Scottsdale, AZ

Average pressure in December - Scottsdale, AZ
  • Average pressure in December: 1017.8mbar

The month with the highest atmospheric pressure is January (1018.9mbar).
The month with the lowest atmospheric pressure is June (1009.6mbar).

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Average wind speed in December
Scottsdale, AZ

Average wind speed in December - Scottsdale, AZ
  • Average wind speed in December: 7.1km/h

The windiest months (with the highest average wind speed) are April and May (10.2km/h).
The calmest month (with the lowest average wind speed) is December (7.1km/h).

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Average humidity in December
Scottsdale, AZ

Average humidity in December - Scottsdale, 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
Scottsdale, AZ

Average rainfall in December - Scottsdale, AZ
  • Average rainfall in December: 22mm

The wettest month (with the highest rainfall) is July (29mm).
The driest month (with the least rainfall) is June (2mm).

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Average rainfall days in December
Scottsdale, AZ

Average rainfall days in December - Scottsdale, 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
Scottsdale, AZ

Average daylight in December / Average sunshine in December - Scottsdale, AZ
  • Average daylight in December: 10h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 6.8h

Months with the most sunshine are June and August (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.8h).

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Average sunshine days in December
Scottsdale, AZ

Average sunshine days in December - Scottsdale, 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
Scottsdale, AZ

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

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
Scottsdale, AZ

Average cloud cover in December - Scottsdale, 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
Scottsdale, AZ

Average visibility in December - Scottsdale, AZ
  • Average visibility in December: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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