December weather forecast and climate
Yuma, AZ

Arizona/California border with the Colorado River in Yuma, Arizona
Arizona/California border with the Colorado River in Yuma, Arizona
December, the first month of the winter, in Yuma, is also an enjoyable month, with average temperature varying between 66°F (18.9°C) and 50.5°F (10.3°C).

Temperature

December is the coldest month, with an average high-temperature of 66°F (18.9°C) and an average low-temperature of 50.5°F (10.3°C).

Humidity

The most humid month in Yuma, Arizona, is December, 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. Throughout the year, there are 31.6 rainfall days, and 2.8" (71mm) of precipitation is accumulated.

Daylight

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

Sunshine

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

UV index

Months with the lowest UV index are November and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 4 transform into the following instructions:
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. A wide-brim hat offers excellent sun protection for 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.

What is the coldest month in Yuma?

With an average high-temperature of 66°F (18.9°C) and an average low-temperature of 50.5°F (10.3°C), December is the coldest month.

What is the temperature in December in Yuma?

In Yuma, Arizona, in December, the average high-temperature is 66°F (18.9°C), and the average low-temperature is 50.5°F (10.3°C).

What is the most humid month in Yuma?

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

What is the average humidity in December in Yuma?

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

How many days does it rain in December in Yuma?

In December, the rain falls for 2.7 days. Throughout December, 0.24" (6mm) of precipitation is accumulated.

What is the month with the shortest days in Yuma?

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

How many hours of daylight does Yuma have in December?

The average length of the day in December in Yuma is 10h.

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?

In Yuma, the average sunshine in December is 7.2h.

When is the lowest UV index in Yuma?

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

What is the UV index reading in December in Yuma?

In December, the average daily maximum UV index in Yuma is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.
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).

Average pressure in December - Yuma, AZ
  • Average pressure in December: 30.04"

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

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).

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%).

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").

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).

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

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 7.2h

The month with the most sunshine is June (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 7.2h).

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).

Average UV index in December - Yuma, AZ
  • Average UV index in December: 4

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

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).

Average visibility in December - Yuma, AZ
  • Average visibility in December: 6mi

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