Arizona, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and Climate
Yuma, AZ

Aerial view of the Arizona/California border with the Colorado River in Yuma, Arizona
Aerial view of the Arizona/California border with the Colorado River in Yuma, Arizona
December is the coldest month in Yuma with the average low temperature around 46°F (7.8°C) and the average high temperature around 69°F (20.6°C). The temperatures rarely see 80°F (26.7°C) in the month and the nights mostly stay below 50°F (10°C).
Yuma winters do not experience snowfall, little rain and are delightful due to the mild conditions.
December sees an influx of tourists from colder regions of America to enjoy the warm days with 8 hours of sunshine. It is prudent to pack warm clothes, as nights in arid regions are cold in the winter.
  • The average high temperature in December: 68.3°F

The warmest month (with the highest average high temperature) is July (106.8°F).
The month with the lowest average high temperature is December (68.3°F).

  • The average low temperature in December: 46.6°F

The month with the highest average low temperature is August (82.3°F).
The coldest month (with the lowest average low temperature) is December (46.6°F).

  • The average rainfall in December: 0.5"

Wettest months (with the highest rainfall) are August, September and December (0.5").
Driest months (with the lowest rainfall) are May and June (0").

  • The average rainfall days in December: 2.1 days

Months with the highest number of rainy days are January and August (2.3 days).
The month with the lowest number of rainy days is June (0.2 days).

  • The average daylight in December: 10h

Months with the longest days are May, June and July (Average daylight: 14h).
Months with shortest days are January, November and December (Average daylight: 10h).

  • The average sunshine in December: 8.2h

The month with most sunshine is June (Average sunshine: 13.8h).
The month with least sunshine is December (Average sunshine: 8.2h).

  • The average UV index in December: 3

The month with the highest UV index is July (UV index 11).
Months with the lowest UV index are January and December (UV index 3).