Weather on August 20
Glendale, AZ
55 Years of Data
Avg High
104°F
Avg Low
80°F
Warmest
2025
101°F avg
Coldest
1971
82°F avg
About This Date
August 20th in Glendale, AZ typically brings hot summer weather, with average highs around 104°F and lows near 80°F. Over 54 years of records, the warmest August 20th was in 2025 (101°F average), while the coldest was 1971 (82°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 7% of August 20th dates historically, with the wettest August 20th recording 1.27" 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 August 20th in Glendale, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 112° | 90° | 101° | — | — |
| 2024 | 111° | 81° | 96° | — | — |
| 2023 | 98° | 79° | 88° | — | — |
| 2022 | 97° | 70° | 83° | — | — |
| 2021 | 98° | 80° | 89° | — | — |
| 2020 | 110° | 81° | 95° | 0.13" | — |
| 2019 | 108° | 81° | 94° | — | — |
| 2018 | 107° | 86° | 97° | — | — |
| 2016 | 103° | 81° | 92° | — | — |
| 2015 | 105° | 82° | 94° | — | — |
| 2014 | 98° | 73° | 86° | 0.51" | — |
| 2013 | 111° | 82° | 97° | — | — |
| 2012 | 105° | 83° | 94° | — | — |
| 2011 | 106° | 80° | 93° | — | — |
| 2010 | 107° | 84° | 96° | — | — |
| 2009 | 109° | 82° | 96° | — | — |
| 2008 | 106° | 80° | 93° | — | — |
| 2007 | 104° | 85° | 94° | — | — |
| 2006 | 106° | 86° | 96° | — | — |
| 2005 | 107° | 81° | 94° | — | — |
| 2004 | 101° | 77° | 89° | — | — |
| 2003 | 98° | 77° | 88° | — | — |
| 2002 | 103° | 80° | 91° | — | — |
| 2001 | 105° | 84° | 95° | — | — |
| 2000 | 107° | 84° | 96° | — | — |
| 1999 | 106° | 81° | 93° | — | — |
| 1998 | 106° | 84° | 95° | — | — |
| 1997 | 108° | 85° | 96° | — | — |
| 1996 | 104° | 85° | 94° | — | — |
| 1995 | 102° | 75° | 89° | 1.27" | — |
| 1994 | 107° | 85° | 96° | — | — |
| 1993 | 104° | 81° | 92° | — | — |
| 1992 | 106° | 80° | 93° | — | — |
| 1991 | 106° | 83° | 94° | — | — |
| 1990 | 99° | 80° | 89° | — | — |
| 1989 | 101° | 81° | 91° | — | — |
| 1988 | 100° | 79° | 89° | — | — |
| 1987 | 106° | 83° | 94° | — | — |
| 1986 | 112° | 86° | 99° | — | — |
| 1985 | 104° | 73° | 89° | 0.36" | — |
| 1984 | 95° | 74° | 84° | — | — |
| 1983 | 96° | 71° | 84° | — | — |
| 1982 | 111° | 85° | 98° | — | — |
| 1981 | 105° | 80° | 93° | — | — |
| 1980 | 99° | 69° | 84° | — | — |
| 1979 | 99° | 68° | 83° | — | — |
| 1978 | 106° | 79° | 92° | — | — |
| 1977 | 108° | 77° | 92° | — | — |
| 1976 | 106° | 75° | 90° | — | — |
| 1975 | 99° | 73° | 86° | — | — |
| 1974 | 102° | 70° | 86° | — | — |
| 1973 | 103° | 74° | 88° | — | — |
| 1972 | 102° | 74° | 88° | — | — |
| 1971coldest | 91° | 74° | 82° | — | — |
54 years of data from ALHAMBRA