The highest day temperature in December 2025 was 83°F. The lowest night temperature was 43°F. The average values for day and night temperatures during December were 74.9°F и 51.3°F respectivly.

Most of the days in December are sunny but you can also expect cloudy and gloomy days.

Precipitation total in December for Glendale is 0.3 in. It makes december one of the most rainy months of the year.

The average wind speed in December is 3.9 mph. It makes December the most windless month of the year for Glendale.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Glendale in December is 8.0 hours.