Weather on December 20
Tempe, AZ
55 Years of Data
Avg High
69°F
Avg Low
39°F
Warmest
2024
65°F avg
Coldest
2006
41°F avg
About This Date
December 20th in Tempe, AZ typically brings mild winter weather, with average highs around 69°F and lows near 39°F — a 30°F daily swing. Over 55 years of records, the warmest December 20th was in 2024 (65°F average), while the coldest was 2006 (41°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 9% of December 20th dates historically, with the wettest December 20th recording 1.65" of rain. 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 20th in Tempe, AZ? Great weather for outdoor activities.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 44° | 61° | — | — |
| 2024warmest | 85° | 45° | 65° | — | — |
| 2023 | 78° | 45° | 61° | 0.05" | — |
| 2022 | 66° | 36° | 51° | — | — |
| 2021 | 74° | 34° | 54° | — | — |
| 2020 | 70° | 35° | 52° | — | — |
| 2019 | 70° | 36° | 53° | — | — |
| 2018 | 76° | 34° | 55° | — | — |
| 2017 | 70° | 37° | 53° | — | — |
| 2016 | 75° | 47° | 61° | — | — |
| 2015 | 66° | 35° | 51° | — | — |
| 2014 | 67° | 39° | 53° | — | — |
| 2013 | 65° | — | — | 1.65" | — |
| 2012 | 65° | 32° | 48° | — | — |
| 2011 | 64° | 45° | 54° | — | — |
| 2010 | 72° | 46° | 59° | — | — |
| 2009 | 71° | 40° | 55° | — | — |
| 2008 | 60° | 40° | 50° | — | — |
| 2007 | 68° | 36° | 52° | — | — |
| 2006coldest | 55° | 26° | 41° | — | — |
| 2005 | 75° | 41° | 58° | — | — |
| 2004 | 74° | 44° | 59° | — | — |
| 2003 | 77° | 49° | 63° | — | — |
| 2002 | 68° | 40° | 54° | — | — |
| 2001 | 77° | 43° | 60° | — | — |
| 2000 | 69° | 38° | 53° | — | — |
| 1999 | 71° | 40° | 55° | — | — |
| 1998 | 69° | 46° | 58° | — | — |
| 1997 | 65° | 51° | 58° | — | — |
| 1996 | 63° | 35° | 49° | — | — |
| 1995 | 65° | 37° | 51° | — | — |
| 1994 | 74° | 38° | 56° | — | — |
| 1993 | 66° | 29° | 47° | — | — |
| 1992 | 58° | 33° | 45° | — | — |
| 1991 | 64° | 46° | 55° | 0.3" | — |
| 1990 | 56° | 42° | 49° | — | — |
| 1989 | 69° | 39° | 54° | — | — |
| 1988 | 64° | 37° | 51° | — | — |
| 1987 | 63° | 43° | 53° | — | — |
| 1986 | 65° | 49° | 57° | 0.13" | — |
| 1985 | 78° | 41° | 60° | — | — |
| 1984 | 61° | 48° | 54° | — | — |
| 1983 | 66° | 42° | 54° | — | — |
| 1982 | 74° | 42° | 58° | — | — |
| 1981 | 74° | 39° | 56° | — | — |
| 1980 | 76° | 40° | 58° | — | — |
| 1979 | 78° | 41° | 60° | — | — |
| 1978 | 57° | 30° | 44° | 0.05" | — |
| 1977 | 69° | 29° | 49° | — | — |
| 1976 | 67° | 39° | 53° | — | — |
| 1975 | 74° | 41° | 57° | — | — |
| 1974 | 68° | 30° | 49° | — | — |
| 1973 | 70° | 33° | 51° | — | — |
| 1972 | 70° | 33° | 51° | — | — |
| 1971 | 65° | 31° | 48° | — | — |
55 years of data from TEMPE ASU