Weather on December 18
Tucson, AZ
55 Years of Data
Avg High
68°F
Avg Low
42°F
Warmest
1979
66°F avg
Coldest
1990
42°F avg
About This Date
December 18th in Tucson, AZ typically brings mild winter weather, with average highs around 68°F and lows near 42°F — a 26°F daily swing. Over 55 years of records, the warmest December 18th was in 1979 (66°F average), while the coldest was 1990 (42°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 16% of December 18th dates historically, with the wettest December 18th recording 2.92" 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 18th in Tucson, AZ? Great weather for outdoor activities.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 46° | 60° | — | — |
| 2024 | 82° | 43° | 62° | — | — |
| 2023 | 80° | 45° | 62° | — | — |
| 2022 | 64° | 42° | 53° | — | — |
| 2021 | 62° | 30° | 46° | — | — |
| 2020 | 65° | 39° | 52° | — | — |
| 2019 | 63° | 44° | 53° | — | — |
| 2018 | 65° | 42° | 53° | — | — |
| 2017 | 60° | 44° | 52° | — | — |
| 2016 | 60° | 28° | 44° | — | — |
| 2015 | 71° | 33° | 52° | — | — |
| 2014 | 58° | 43° | 50° | 0.03" | — |
| 2013 | 79° | 50° | 64° | — | — |
| 2012 | 68° | 35° | 52° | — | — |
| 2011 | 58° | 42° | 50° | 0.13" | — |
| 2010 | 68° | 44° | 56° | — | — |
| 2009 | 70° | 33° | 51° | — | — |
| 2008 | 66° | 47° | 56° | 0.15" | — |
| 2007 | 69° | 38° | 53° | — | — |
| 2006 | 58° | 44° | 51° | — | — |
| 2005 | 66° | 37° | 52° | — | — |
| 2004 | 68° | 39° | 54° | — | — |
| 2003 | 78° | 37° | 58° | — | — |
| 2002 | 53° | 41° | 47° | 0.13" | — |
| 2001 | 63° | 34° | 48° | — | — |
| 2000 | 62° | 37° | 50° | — | — |
| 1999 | 72° | 37° | 54° | — | — |
| 1998 | 67° | 47° | 57° | — | — |
| 1997 | 75° | 40° | 57° | — | — |
| 1996 | 83° | 31° | 57° | — | — |
| 1995 | 61° | 37° | 49° | — | — |
| 1994 | 78° | 47° | 62° | — | — |
| 1993 | 71° | 43° | 57° | — | — |
| 1992 | 62° | 42° | 52° | 0.08" | — |
| 1991 | 59° | 50° | 55° | 1.5" | — |
| 1990coldest | 54° | 31° | 42° | — | — |
| 1989 | 64° | 39° | 52° | — | — |
| 1988 | 70° | 52° | 61° | — | — |
| 1987 | 61° | 50° | 55° | 0.13" | — |
| 1986 | 65° | 45° | 55° | 0.1" | — |
| 1985 | 71° | 37° | 54° | — | — |
| 1984 | 65° | 43° | 54° | — | — |
| 1983 | 66° | 43° | 54° | — | — |
| 1982 | 73° | 43° | 58° | — | — |
| 1981 | 75° | 42° | 59° | — | — |
| 1980 | 79° | 51° | 65° | — | — |
| 1979warmest | 81° | 51° | 66° | — | — |
| 1978 | 62° | 56° | 59° | 2.92" | — |
| 1977 | 76° | 45° | 60° | — | — |
| 1976 | 72° | 45° | 58° | — | — |
| 1975 | 74° | 39° | 56° | — | — |
| 1974 | 66° | 41° | 54° | — | — |
| 1973 | 68° | 42° | 55° | — | — |
| 1972 | 77° | 46° | 62° | — | — |
| 1971 | 57° | 45° | 51° | — | — |
55 years of data from TUCSON WFO