Glendale, AZ weather in December
In December, Glendale sees highs around 64°F and lows around 40°F: cool and mostly dry. There are about 4 days with rain. It is one of the coolest months in Glendale. Great for outdoor plans.
- Normal high
- 64°F
- Normal low
- 40°F
- Wet days
- 4
- 0.7 in total
- Muggy days
- 0
- dew point 65°F+
How December changes from start to finish
| December 1 | December 31 | |
|---|---|---|
| Normal high | 67°F | 63°F |
| Normal low | 42°F | 40°F |
| Chance of a wet day | 11% | 13% |
| Sunrise / sunset | 7:14 am / 5:20 pm | 7:32 am / 5:30 pm |
| Daylight | 10.1 h | 10.0 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Arizona time (no daylight saving)).
A typical December day
- 6 am47°Fdew point 33°F
- 9 am51°Fdew point 33°F
- Noon61°Fdew point 30°F
- 3 pm65°Fdew point 29°F
- 6 pm62°Fdew point 31°F
- 9 pm56°Fdew point 33°F
NOAA hourly normals (local standard time) from Phoenix Sky Harbor Intl Airport (13 mi away); average wind 5 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F19 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow4 of 31
- Notable rainat least 0.10 in2 of 31
- Freezing nightslow 32°F or below2 of 31
Average days per December, counted from daily records for each year 1991-2020.
Rain in December
Normal precipitation is 0.7 in; a dry December brings about 0.2 in and a wet one about 1.0 in (25th and 75th percentiles). Days with half an inch or more are rare. Snow is very rare.
How December varies from year to year
- Warmest December, 1991-20201996: average high 71°F
- Coolest December2019: average high 61°F
- Wettest December1992: 3.1 in
- Driest December1999: no measurable precipitation
- Highest reading83°F (December 8, 1996)
- Lowest reading27°F (December 31, 2010)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
December compared with November and January
| November | December | January | |
|---|---|---|---|
| Normal high | 74°F | 64°F | 65°F |
| Normal low | 48°F | 40°F | 41°F |
| Wet days | 2 | 4 | 4 |
| Comfortable days | 19 | 19 | 21 |
| Daylight | 10.4 h | 10.0 h | 10.2 h |
Highs change by -10°F from November and +1°F into January.
Nearby alternatives in December
- Cooler: Sedona, AZ95 mi · high 58°F · 4 wet days
How Glendale ranks in December
- Normal high88th warmest of 378 cities; 7th of 13 in Arizona
- Wet days24th driest of 378
- Comfortable days14th most of 340
What to pack for Glendale in December
- A warm jacket – lows near 40°F, highs near 64°F
Frost in December
The first fall frost typically comes around Dec 15; in 1 year in 10 it comes before Nov 28. All frost dates for Glendale.
Heating and cooling
December has 403 heating degree days and 0 cooling degree days (base 65°F), 8% of the year's total heating and cooling demand.
Questions
How cold is Glendale in December?
The normal high is 64°F and the normal low is 40°F. From 1991 to 2020 the coldest December reading was 27°F (December 31, 2010).
Does it rain a lot in Glendale in December?
About 4 days in December have at least 0.01 in of precipitation, and the normal total is 0.7 in. The wettest December in 1991-2020 was in 1992 (3.1 in); the driest was in 1999, with no measurable precipitation.
Does it snow in Glendale in December?
Snow is very rare: the 1991-2020 normal for December rounds to 0.0 in.
Is December a good time to visit Glendale?
December ranks 5th of 12 months on our comfort score for Glendale (70 out of 100). It has about 19 comfortable days. The best month is February.
Where the numbers come from
- Temperature and frost dates: Youngtown (USC00029634), 7.7 mi WNW of the city center, 1,135 ft . NOAA normals and daily records, 1991-2020.
- Rain and humidity and wind by hour: Phoenix Sky Harbor Intl Airport (USW00023183), 13 mi SE of the city center, 1,107 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Tempe ASU (USC00028499), 17 mi ESE of the city center, 1,167 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Phoenix Sky Harbor Intl Airport (722780-23183), 13 mi SE of the city center, 1,113 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).