Weather on December 18
Surprise, AZ
55 Years of Data
Avg High
67°F
Avg Low
41°F
Warmest
2025
62°F avg
Coldest
1992
43°F avg
About This Date
December 18th in Surprise, AZ typically brings mild winter weather, with average highs around 67°F and lows near 41°F — a 26°F daily swing. Over 55 years of records, the warmest December 18th was in 2025 (62°F average), while the coldest was 1992 (43°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 13% of December 18th dates historically, with the wettest December 18th recording 2.79" of rain. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for December 18th in Surprise, AZ? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 79° | 45° | 62° | — | — |
| 2024 | 80° | 41° | 61° | — | — |
| 2023 | 69° | 45° | 57° | — | — |
| 2022 | 58° | 34° | 46° | — | — |
| 2021 | 65° | 47° | 56° | — | — |
| 2020 | 61° | 34° | 47° | — | — |
| 2019 | 62° | 39° | 51° | — | — |
| 2018 | 65° | 41° | 53° | — | — |
| 2017 | 65° | 43° | 54° | — | — |
| 2016 | 64° | 48° | 56° | — | — |
| 2015 | 64° | 34° | 49° | — | — |
| 2014 | 60° | 45° | 52° | 0.08" | — |
| 2013 | 74° | 48° | 61° | — | — |
| 2012 | 59° | 41° | 50° | — | — |
| 2011 | 62° | 49° | 55° | 0.36" | — |
| 2010 | 67° | 54° | 60° | — | — |
| 2009 | 71° | 43° | 57° | — | — |
| 2008 | 64° | 46° | 55° | 0.56" | — |
| 2007 | 64° | 36° | 50° | — | — |
| 2006 | 58° | 47° | 52° | — | — |
| 2005 | 62° | 37° | 50° | — | — |
| 2004 | 69° | 39° | 54° | — | — |
| 2003 | 71° | 37° | 54° | — | — |
| 2002 | 63° | 42° | 52° | — | — |
| 2001 | 63° | 36° | 49° | — | — |
| 2000 | 68° | 46° | 57° | — | — |
| 1999 | 73° | 38° | 55° | — | — |
| 1998 | 75° | 46° | 61° | — | — |
| 1997 | 68° | 37° | 53° | — | — |
| 1996 | 58° | 38° | 48° | — | — |
| 1995 | 64° | 38° | 51° | — | — |
| 1994 | 75° | 41° | 58° | — | — |
| 1993 | 67° | 42° | 54° | — | — |
| 1992coldest | 50° | 36° | 43° | 0.15" | — |
| 1991 | 66° | 55° | 61° | 1.02" | — |
| 1990 | 57° | 30° | 44° | — | — |
| 1989 | 64° | 35° | 50° | — | — |
| 1988 | 71° | 45° | 58° | — | — |
| 1987 | 61° | 47° | 54° | 2.21" | — |
| 1986 | 66° | 45° | 55° | — | — |
| 1985 | 73° | 37° | 55° | — | — |
| 1984 | 61° | 38° | 49° | — | — |
| 1983 | 69° | 42° | 56° | — | — |
| 1982 | 68° | 37° | 53° | — | — |
| 1981 | 73° | 38° | 55° | — | — |
| 1980 | 77° | 43° | 60° | — | — |
| 1979 | 77° | 38° | 57° | — | — |
| 1978 | 60° | 54° | 57° | 2.79" | — |
| 1977 | 67° | 36° | 51° | — | — |
| 1976 | 72° | 43° | 57° | — | — |
| 1975 | 73° | 34° | 53° | — | — |
| 1974 | 68° | 41° | 55° | — | — |
| 1973 | 73° | 35° | 54° | — | — |
| 1972 | 71° | 42° | 57° | — | — |
| 1971 | 65° | 41° | 53° | — | — |
55 years of data from YOUNGTOWN