Weather on September 21
Chandler, AZ
55 Years of Data
Avg High
98°F
Avg Low
67°F
Warmest
2000
90°F avg
Coldest
1985
72°F avg
About This Date
September 21st 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 53 years of records, the warmest September 21st was in 2000 (90°F average), while the coldest was 1985 (72°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 9% of September 21st dates historically. The last decade has been 3.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.2°F cooler on this date compared to 20-30 years ago.
Planning for September 21st in Chandler, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 99° | 76° | 87° | — | — |
| 2024 | 96° | 65° | 80° | — | — |
| 2023 | 99° | — | — | — | — |
| 2022 | — | 69° | — | 0.43" | — |
| 2021 | 103° | 58° | 80° | — | — |
| 2020 | — | 72° | — | — | — |
| 2019 | 100° | — | — | — | — |
| 2018 | 100° | 69° | 85° | — | — |
| 2017 | 97° | 60° | 78° | — | — |
| 2016 | 99° | 61° | 80° | — | — |
| 2015 | — | 59° | — | 0.03" | — |
| 2014 | 98° | 67° | 82° | — | — |
| 2013 | 101° | 66° | 83° | — | — |
| 2012 | 103° | 64° | 83° | — | — |
| 2011 | 104° | 61° | 82° | — | — |
| 2010 | 102° | 74° | 88° | — | — |
| 2009 | 101° | 66° | 83° | — | — |
| 2008 | 100° | 70° | 85° | — | — |
| 2007 | 100° | 68° | 84° | — | — |
| 2006 | 93° | 62° | 78° | — | — |
| 2004 | 86° | 61° | 73° | — | — |
| 2003 | 105° | 68° | 87° | — | — |
| 2002 | 101° | 69° | 85° | — | — |
| 2001 | 107° | 72° | 89° | — | — |
| 2000warmest | 101° | 79° | 90° | — | — |
| 1999 | 95° | 77° | 86° | — | — |
| 1997 | 100° | 72° | 86° | — | — |
| 1996 | 97° | 69° | 83° | — | — |
| 1995 | 102° | 69° | 86° | — | — |
| 1994 | 81° | 67° | 74° | 0.3" | — |
| 1993 | 101° | 61° | 81° | — | — |
| 1992 | 96° | 72° | 84° | — | — |
| 1991 | 93° | 70° | 81° | — | — |
| 1990 | 93° | 67° | 80° | 0.05" | — |
| 1989 | 100° | 58° | 79° | — | — |
| 1988 | 94° | 73° | 83° | — | — |
| 1987 | 99° | 72° | 85° | — | — |
| 1986 | 88° | 66° | 77° | — | — |
| 1985coldest | 85° | 60° | 72° | — | — |
| 1984 | 103° | 75° | 89° | — | — |
| 1983 | 92° | 72° | 82° | — | — |
| 1982 | 101° | 70° | 85° | — | — |
| 1981 | 100° | 71° | 86° | — | — |
| 1980 | 102° | 51° | 77° | — | — |
| 1979 | 102° | 66° | 84° | — | — |
| 1978 | 97° | 66° | 81° | — | — |
| 1977 | 96° | 57° | 77° | — | — |
| 1976 | 100° | 69° | 85° | — | — |
| 1975 | 99° | 66° | 82° | — | — |
| 1974 | 92° | 60° | 76° | 0.2" | — |
| 1973 | 99° | 65° | 82° | — | — |
| 1972 | 94° | 62° | 78° | — | — |
| 1971 | 91° | 59° | 75° | — | — |
53 years of data from CHANDLER