Weather on December 18
Surprise, AZ
55 Years of Data
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° | — | — |
Surprise, AZ Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Surprise, AZ Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Surprise, 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 Surprise, AZ
Surprise, AZ has no months that meet our "pleasant" threshold — every season has tradeoffs.