December weather - Winter 2024

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

Arizona/California border with the Colorado River in Yuma, Arizona

Weather in December

December sees the complete transition to winter, the temperature dropping to an average of 66°F (18.9°C). But even in this coldest month, Yuma’s desert location ensures a far cry from the blizzards and extreme cold experienced elsewhere in the USA. Cloud cover percentage experiences a rise to 17%, a relatively significant increase in a city famous for its clear, blue skies. The increased cloudiness and low temperatures give a unique charm to the desert city at the end of the year. The experience of winter in Yuma, despite the mild temperature, presents an unusual perspective, elevating the charm of the desert city.

Temperature

December proves to be the coldest month in Yuma, recording an average maximum temperature of 66°F (18.9°C) and a minimum temperature of 50.5°F (10.3°C).

Humidity

December is the most humid month in Yuma, with an average relative humidity of 38%.

Rainfall

In Yuma, in December, it is raining for 2.7 days, with typically 0.24" (6mm) of accumulated precipitation. In Yuma, during the entire year, the rain falls for 31.6 days and collects up to 2.8" (71mm) of precipitation.

Daylight

The month with the shortest days is December, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 7:23 am and sunset at 5:32 pm. On the last day of December, sunrise is at 7:40 am and sunset at 5:43 pm MST.

Sunshine

With an average of 7.2h of sunshine, December has the least sunshine of the year.

UV index

November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 4 in December translates into the following instructions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Avoiding the Sun during its peak radiation time around midday is a healthy practice. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.

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Frequently asked questions

What is the coldest time of year in Yuma?

In Yuma, December is the month with the lowest recorded average temperatures, measuring a high of 66°F (18.9°C) and a low of 50.5°F (10.3°C).

What is the temperature in December in Yuma?

Yuma in December has an average high-temperature of 66°F (18.9°C) and an average low-temperature of 50.5°F (10.3°C).

What is the most humid month in Yuma?

The most humid month in Yuma, Arizona, is December, with an average relative humidity of 38%.

What is the average humidity in December in Yuma?

The average relative humidity in December in Yuma is 38%.

How much does it rain in Yuma in December?

In Yuma, Arizona, during December, the rain falls for 2.7 days and regularly aggregates up to 0.24" (6mm) of precipitation.

What is the month with the shortest days in Yuma?

With an average of 10h and 0min of daylight, December has the shortest days of the year.

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

The average day length in December is 10h and 2min.

When is the sunrise / sunset in December in Yuma?

In December, on the first day of the month, sunrise is at 7:23 am and sunset at 5:32 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:43 pm MST.

What is the month with the least sunshine in Yuma?

With an average of 7.2h of sunshine, December has the least sunshine of the year in Yuma.

How long on average sun shines in December in Yuma?

The average sunshine duration in December is 7.2h.

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

The months with the lowest UV index are November and December, with an average maximum UV index of 4.

How high is the UV index in December in Yuma?

In Yuma, the average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from 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

76.6°F 24.8°C

66°F 18.9°C

68°F 20°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.4mph 11.9km/h

7.7mph 12.4km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

27.9

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Yuma, AZ

Average high temperature in December: 66°F

The warmest month (with the highest average high temperature) is July (105.3°F).
The month with the lowest average high temperature is December (66°F).

Average low temperature in December: 50.5°F

The month with the highest average low temperature is August (86.4°F).
The coldest month (with the lowest average low temperature) is December (50.5°F).

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Average pressure in December
Yuma, AZ

Average pressure in December: 30.04"Hg

The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.74"Hg).

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Average wind speed in December
Yuma, AZ

Average wind speed in December: 7mph

The windiest months (with the highest average wind speed) are April and July (8.5mph).
The calmest month (with the lowest average wind speed) is November (6.6mph).

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Average humidity in December
Yuma, AZ

Average humidity in December: 38%

The month with the highest relative humidity is December (38%).
The month with the lowest relative humidity is June (22%).

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Average rainfall in December
Yuma, AZ

Average rainfall in December: 0.24"

The wettest months (with the highest rainfall) are July and September (0.39").
The driest months (with the least rainfall) are May and June (0.04").

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Average rainfall days in December
Yuma, AZ

Average rainfall days in December: 2.7 days

The month with the highest number of rainy days is July (5.8 days).
The month with the least rainy days is May (0.8 days).

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

Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

Average sunshine in December: 7h and 1min

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

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Average sunshine days in December
Yuma, AZ

Average sunshine days in December: 27.9 days

The month with the most sunshine days is May (30.2 days).
The month with the least sunshine days is July (22.1 days).

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Average UV index in December
Yuma, AZ

Average UV index in December: 4

The months with the highest UV index are June, July, August and September (UV index 8).
The months with the lowest UV index are November and December (UV index 4).

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Average cloud cover in December
Yuma, AZ

Average cloud cover in December: 17

The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in December
Yuma, 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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December weather forecast
Yuma, AZ

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