Weather on August 20
Tempe, AZ
55 Years of Data
Avg High
104°F
Avg Low
76°F
Warmest
1982
99°F avg
Coldest
1980
79°F avg
About This Date
August 20th in Tempe, AZ typically brings hot summer weather, with average highs around 104°F and lows near 76°F — a 28°F daily swing. Over 55 years of records, the warmest August 20th was in 1982 (99°F average), while the coldest was 1980 (79°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 18% of August 20th dates historically, with the wettest August 20th recording 2.82" 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 Tempe, 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 | 112° | — | — | — | — |
| 2024 | 111° | 83° | 97° | — | — |
| 2023 | 102° | 83° | 92° | — | — |
| 2022 | 104° | 69° | 87° | 0.05" | — |
| 2021 | 100° | 71° | 86° | — | — |
| 2020 | 111° | 88° | 99° | — | — |
| 2019 | 110° | 70° | 90° | — | — |
| 2018 | 106° | 80° | 93° | — | — |
| 2017 | 101° | 69° | 85° | — | — |
| 2016 | 101° | 74° | 87° | — | — |
| 2015 | 104° | 77° | 91° | — | — |
| 2014 | 97° | 68° | 82° | 0.03" | — |
| 2013 | 107° | 78° | 93° | — | — |
| 2012 | 105° | 80° | 93° | — | — |
| 2011 | 105° | 77° | 91° | — | — |
| 2010 | 106° | 77° | 91° | — | — |
| 2009 | 106° | 76° | 91° | — | — |
| 2008 | 104° | 77° | 91° | — | — |
| 2007 | 104° | 82° | 93° | — | — |
| 2006 | 107° | 80° | 94° | — | — |
| 2005 | 104° | 78° | 91° | — | — |
| 2004 | 99° | 76° | 87° | — | — |
| 2003 | 98° | 77° | 88° | — | — |
| 2002 | 101° | 79° | 90° | — | — |
| 2001 | 104° | 81° | 92° | — | — |
| 2000 | 106° | 81° | 93° | — | — |
| 1999 | 103° | 79° | 91° | 0.2" | — |
| 1998 | 104° | 79° | 91° | — | — |
| 1997 | 106° | 79° | 92° | — | — |
| 1996 | 102° | 80° | 91° | — | — |
| 1995 | 100° | 73° | 87° | 1.27" | — |
| 1994 | 106° | 78° | 92° | — | — |
| 1993 | 101° | 75° | 88° | 0.1" | — |
| 1992 | 102° | 73° | 88° | 0.76" | — |
| 1991 | 105° | 77° | 91° | — | — |
| 1990 | 98° | 78° | 88° | — | — |
| 1989 | 99° | 79° | 89° | — | — |
| 1988 | 102° | 78° | 90° | — | — |
| 1987 | 104° | 84° | 94° | — | — |
| 1986 | 109° | 82° | 96° | — | — |
| 1985 | 101° | 71° | 86° | 2.82" | — |
| 1984 | 96° | 74° | 85° | 0.03" | — |
| 1983 | 96° | 74° | 85° | — | — |
| 1982warmest | 109° | 89° | 99° | — | — |
| 1981 | 106° | 77° | 91° | — | — |
| 1980coldest | 99° | 59° | 79° | — | — |
| 1979 | 97° | 63° | 80° | — | — |
| 1978 | 108° | 68° | 88° | 0.46" | — |
| 1977 | 111° | 72° | 91° | — | — |
| 1976 | 104° | 69° | 87° | — | — |
| 1975 | 105° | 75° | 90° | — | — |
| 1974 | 110° | 65° | 87° | — | — |
| 1973 | 110° | 75° | 92° | — | — |
| 1972 | 102° | 73° | 88° | — | — |
| 1971 | 98° | 72° | 85° | 0.08" | — |
55 years of data from TEMPE ASU