Weather on December 21
Glendale, AZ
55 Years of Data
About This Date
December 21st in Glendale, AZ typically brings mild winter weather, with average highs around 65°F and lows near 42°F. Over 53 years of records, the warmest December 21st was in 1977 (61°F average), while the coldest was 1990 (41°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 8% of December 21st dates historically. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 21st in Glendale, AZ? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 46° | 59° | — | — |
| 2024 | — | 47° | — | — | — |
| 2023 | 74° | 46° | 60° | — | — |
| 2022 | 59° | 36° | 47° | — | — |
| 2021 | 63° | 45° | 54° | — | — |
| 2020 | 72° | 38° | 55° | — | — |
| 2019 | 68° | 37° | 53° | — | — |
| 2017 | 65° | 46° | 55° | — | — |
| 2016 | — | 59° | — | 0.13" | — |
| 2015 | 61° | 38° | 49° | — | — |
| 2014 | 63° | 42° | 52° | — | — |
| 2012 | 69° | 37° | 53° | — | — |
| 2011 | 61° | 41° | 51° | — | — |
| 2010 | 69° | 54° | 61° | — | — |
| 2009 | 68° | 45° | 56° | — | — |
| 2008 | 60° | 36° | 48° | — | — |
| 2007 | 62° | 47° | 54° | 0.05" | — |
| 2006 | 55° | 32° | 44° | — | — |
| 2005 | 72° | 43° | 57° | — | — |
| 2004 | 67° | 43° | 55° | — | — |
| 2003 | 73° | 48° | 61° | — | — |
| 2002 | 56° | 35° | 45° | 0.1" | — |
| 2001 | 70° | 41° | 55° | — | — |
| 2000 | 69° | 37° | 53° | — | — |
| 1999 | 66° | 37° | 52° | — | — |
| 1998 | 65° | 42° | 53° | — | — |
| 1997 | 60° | 47° | 53° | — | — |
| 1996 | 68° | 40° | 54° | — | — |
| 1995 | 63° | 40° | 51° | — | — |
| 1994 | 74° | 47° | 60° | — | — |
| 1993 | 60° | 46° | 53° | — | — |
| 1992 | 64° | 37° | 51° | — | — |
| 1991 | 60° | 49° | 54° | — | — |
| 1990coldest | 46° | 36° | 41° | — | — |
| 1989 | 65° | 43° | 54° | — | — |
| 1988 | 62° | 45° | 53° | — | — |
| 1987 | 65° | 42° | 53° | — | — |
| 1986 | 66° | 43° | 54° | — | — |
| 1985 | 77° | 45° | 61° | — | — |
| 1984 | 61° | 35° | 48° | — | — |
| 1983 | 62° | 41° | 52° | — | — |
| 1982 | 68° | 39° | 54° | — | — |
| 1981 | 69° | 40° | 54° | — | — |
| 1980 | 73° | 40° | 56° | — | — |
| 1979 | 65° | 47° | 56° | 0.05" | — |
| 1978 | 59° | 33° | 46° | — | — |
| 1977warmest | 68° | 54° | 61° | — | — |
| 1976 | 67° | 44° | 55° | — | — |
| 1975 | 57° | 51° | 54° | — | — |
| 1974 | 69° | 34° | 51° | — | — |
| 1973 | 69° | 30° | 50° | — | — |
| 1972 | 74° | 38° | 56° | — | — |
| 1971 | 68° | 36° | 52° | — | — |
Glendale, AZ Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Glendale, AZ Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Glendale, AZ Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Glendale, AZ
Glendale, AZ has no months that meet our "pleasant" threshold — every season has tradeoffs.