Weather on August 31
Surprise, AZ
55 Years of Data
Avg High
104°F
Avg Low
76°F
Warmest
1998
99°F avg
Coldest
1995
61°F avg
About This Date
August 31st in Surprise, AZ typically brings hot summer weather, with average highs around 104°F and lows near 76°F — a 28°F daily swing. Over 54 years of records, the warmest August 31st was in 1998 (99°F average), while the coldest was 1995 (61°F) — a 38°F range across recorded history. Rain or other precipitation has occurred on about 6% of August 31st dates historically. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for August 31st in Surprise, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 105° | 78° | 92° | — | — |
| 2024 | 107° | 82° | 95° | — | — |
| 2022 | 107° | 85° | 96° | — | — |
| 2021 | 91° | 76° | 83° | 0.15" | — |
| 2020 | 99° | 73° | 86° | — | — |
| 2019 | 105° | 80° | 93° | — | — |
| 2018 | 103° | 80° | 91° | — | — |
| 2017 | 112° | 84° | 98° | — | — |
| 2016 | 108° | 82° | 95° | — | — |
| 2015 | 107° | — | — | — | — |
| 2014 | 108° | 79° | 93° | — | — |
| 2013 | 101° | 79° | 90° | 0.08" | — |
| 2012 | 101° | 80° | 90° | — | — |
| 2011 | 110° | 84° | 97° | — | — |
| 2010 | 97° | 69° | 83° | — | — |
| 2009 | 110° | 82° | 96° | — | — |
| 2008 | 94° | 76° | 85° | — | — |
| 2007 | 109° | 86° | 98° | — | — |
| 2006 | 104° | 81° | 92° | — | — |
| 2005 | 106° | 77° | 91° | — | — |
| 2004 | 110° | 78° | 94° | — | — |
| 2003 | 106° | 82° | 94° | — | — |
| 2002 | 109° | 76° | 92° | — | — |
| 2001 | 101° | 78° | 89° | — | — |
| 2000 | 95° | 69° | 82° | — | — |
| 1999 | 101° | 78° | 89° | 0.38" | — |
| 1998warmest | 109° | 90° | 99° | — | — |
| 1997 | 101° | 74° | 87° | — | — |
| 1996 | 103° | 81° | 92° | — | — |
| 1995coldest | 113° | 8° | 61° | — | — |
| 1994 | 104° | 80° | 92° | — | — |
| 1993 | 97° | 74° | 85° | — | — |
| 1992 | 100° | 75° | 88° | — | — |
| 1991 | 100° | 81° | 90° | — | — |
| 1990 | 103° | 83° | 93° | — | — |
| 1989 | 102° | 78° | 90° | — | — |
| 1988 | 98° | 76° | 87° | — | — |
| 1987 | 108° | 75° | 91° | — | — |
| 1986 | 99° | 80° | 89° | — | — |
| 1985 | 107° | 78° | 93° | — | — |
| 1984 | 106° | 83° | 94° | — | — |
| 1983 | 109° | 77° | 93° | — | — |
| 1982 | 106° | 77° | 91° | — | — |
| 1981 | 102° | 80° | 91° | — | — |
| 1980 | 101° | 72° | 86° | — | — |
| 1979 | 105° | 67° | 86° | — | — |
| 1978 | 106° | 74° | 90° | — | — |
| 1977 | 102° | 73° | 88° | — | — |
| 1976 | 106° | 73° | 89° | — | — |
| 1975 | 108° | 70° | 89° | — | — |
| 1974 | 104° | 71° | 88° | — | — |
| 1973 | 100° | 73° | 87° | — | — |
| 1972 | 104° | 71° | 88° | — | — |
| 1971 | 106° | 75° | 90° | — | — |
54 years of data from YOUNGTOWN