Weather on September 20
Chandler, AZ
55 Years of Data
Avg High
98°F
Avg Low
67°F
Warmest
2008
95°F avg
Coldest
1971
71°F avg
About This Date
September 20th in Chandler, AZ typically brings hot fall weather, with average highs around 98°F and lows near 67°F — a 31°F daily swing. Over 55 years of records, the warmest September 20th was in 2008 (95°F average), while the coldest was 1971 (71°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 11% of September 20th dates historically, with the wettest September 20th recording 1.73" of rain. The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
Planning for September 20th in Chandler, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 103° | 73° | 88° | — | — |
| 2024 | 97° | — | — | — | — |
| 2023 | 100° | 62° | 81° | — | — |
| 2022 | 101° | 72° | 86° | — | — |
| 2021 | 102° | 60° | 81° | — | — |
| 2020 | 106° | 69° | 87° | — | — |
| 2019 | 99° | 61° | 80° | — | — |
| 2018 | 96° | 68° | 82° | 0.25" | — |
| 2017 | 99° | 61° | 80° | — | — |
| 2016 | — | 61° | — | — | — |
| 2015 | 104° | 64° | 84° | — | — |
| 2014 | 97° | 68° | 82° | — | — |
| 2013 | 102° | 65° | 83° | — | — |
| 2012 | 103° | 64° | 83° | — | — |
| 2011 | 104° | 62° | 83° | — | — |
| 2010 | — | 80° | — | — | — |
| 2009 | 99° | 70° | 84° | — | — |
| 2008warmest | 100° | 90° | 95° | — | — |
| 2007 | 97° | 62° | 79° | — | — |
| 2006 | 96° | 68° | 82° | — | — |
| 2005 | 104° | 79° | 91° | — | — |
| 2004 | 91° | 62° | 77° | 0.38" | — |
| 2003 | 103° | 70° | 86° | — | — |
| 2002 | 99° | 69° | 84° | — | — |
| 2001 | 105° | 61° | 83° | — | — |
| 2000 | 100° | 78° | 89° | — | — |
| 1999 | 95° | 70° | 82° | 0.86" | — |
| 1998 | 103° | 73° | 88° | — | — |
| 1997 | 102° | 75° | 89° | — | — |
| 1996 | 95° | 66° | 81° | — | — |
| 1995 | 102° | 69° | 86° | — | — |
| 1994 | 101° | 74° | 87° | — | — |
| 1993 | 97° | 56° | 76° | — | — |
| 1992 | 93° | 71° | 82° | 0.18" | — |
| 1991 | 93° | 69° | 81° | — | — |
| 1990 | 92° | 65° | 78° | 0.58" | — |
| 1989 | 89° | 60° | 75° | — | — |
| 1988 | 98° | 67° | 82° | — | — |
| 1987 | 102° | 67° | 84° | — | — |
| 1986 | 95° | 67° | 81° | — | — |
| 1985 | 82° | 59° | 71° | — | — |
| 1984 | 104° | 72° | 88° | — | — |
| 1983 | 97° | 77° | 87° | 1.73" | — |
| 1982 | 99° | 67° | 83° | — | — |
| 1981 | 101° | 71° | 86° | — | — |
| 1980 | 103° | 51° | 77° | — | — |
| 1979 | — | 67° | — | — | — |
| 1978 | 89° | 55° | 72° | — | — |
| 1977 | 100° | 61° | 80° | — | — |
| 1976 | 95° | 69° | 82° | — | — |
| 1975 | 101° | 64° | 82° | — | — |
| 1974 | 90° | 62° | 76° | — | — |
| 1973 | 99° | 62° | 80° | — | — |
| 1972 | 93° | 55° | 74° | — | — |
| 1971coldest | 88° | 55° | 71° | — | — |
55 years of data from CHANDLER