Weather on August 15
Surprise, AZ
55 Years of Data
Avg High
104°F
Avg Low
78°F
Warmest
2015
102°F avg
Coldest
1990
78°F avg
About This Date
August 15th in Surprise, AZ typically brings hot summer weather, with average highs around 104°F and lows near 78°F — a 26°F daily swing. Over 55 years of records, the warmest August 15th was in 2015 (102°F average), while the coldest was 1990 (78°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 15% of August 15th dates historically, with the wettest August 15th recording 2.18" of rain. The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
Planning for August 15th in Surprise, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 108° | 76° | 92° | — | — |
| 2024 | 111° | 86° | 99° | — | — |
| 2023 | 108° | 85° | 96° | — | — |
| 2022 | 104° | 85° | 94° | — | — |
| 2021 | 99° | 80° | 89° | — | — |
| 2020 | 112° | 86° | 99° | — | — |
| 2019 | 114° | 78° | 96° | — | — |
| 2018 | 96° | 81° | 88° | — | — |
| 2017 | 102° | 77° | 90° | — | — |
| 2016 | 110° | 85° | 97° | — | — |
| 2015warmest | 114° | 90° | 102° | — | — |
| 2014 | 103° | 80° | 91° | — | — |
| 2013 | 109° | 82° | 96° | 0.3" | — |
| 2012 | 111° | 85° | 98° | — | — |
| 2011 | 107° | 85° | 96° | — | — |
| 2010 | 109° | 85° | 97° | — | — |
| 2009 | 104° | 78° | 91° | — | — |
| 2008 | 101° | 81° | 91° | — | — |
| 2007 | 105° | 80° | 93° | — | — |
| 2006 | 103° | 78° | 90° | 0.25" | — |
| 2005 | 98° | 76° | 87° | — | — |
| 2004 | 101° | 77° | 89° | — | — |
| 2003 | 93° | 72° | 82° | 1.27" | — |
| 2002 | 109° | 84° | 97° | — | — |
| 2001 | 103° | 75° | 89° | 0.51" | — |
| 2000 | 109° | 86° | 98° | — | — |
| 1999 | 104° | 80° | 92° | — | — |
| 1998 | 106° | 82° | 94° | — | — |
| 1997 | 106° | 79° | 92° | — | — |
| 1996 | 107° | 81° | 94° | — | — |
| 1995 | 105° | 73° | 89° | 1.4" | — |
| 1994 | 108° | 81° | 94° | — | — |
| 1993 | 104° | 67° | 85° | — | — |
| 1992 | 112° | 84° | 98° | — | — |
| 1991 | 106° | 82° | 94° | — | — |
| 1990coldest | 87° | 69° | 78° | 2.18" | — |
| 1989 | 106° | 84° | 95° | — | — |
| 1988 | 107° | 80° | 94° | 0.03" | — |
| 1987 | 99° | 74° | 86° | — | — |
| 1986 | 105° | 81° | 93° | — | — |
| 1985 | 102° | 64° | 83° | — | — |
| 1984 | 96° | 76° | 86° | — | — |
| 1983 | 105° | 78° | 92° | — | — |
| 1982 | 104° | 77° | 91° | — | — |
| 1981 | 101° | 70° | 85° | — | — |
| 1980 | 98° | 75° | 87° | — | — |
| 1979 | 96° | 66° | 81° | — | — |
| 1978 | 103° | 66° | 84° | — | — |
| 1977 | 99° | 83° | 91° | — | — |
| 1976 | 97° | 69° | 83° | — | — |
| 1975 | 102° | 74° | 88° | — | — |
| 1974 | 103° | 78° | 90° | — | — |
| 1973 | 107° | 78° | 93° | — | — |
| 1972 | 102° | 75° | 89° | — | — |
| 1971 | 96° | 70° | 83° | 0.86" | — |
55 years of data from YOUNGTOWN