Weather on October 21
Tempe, AZ
55 Years of Data
Avg High
88°F
Avg Low
56°F
Warmest
2003
83°F avg
Coldest
1972
60°F avg
About This Date
October 21st in Tempe, AZ typically brings warm fall weather, with average highs around 88°F and lows near 56°F — a 32°F daily swing. Over 55 years of records, the warmest October 21st was in 2003 (83°F average), while the coldest was 1972 (60°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 11% of October 21st dates historically, with the wettest October 21st recording 1.45" 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 October 21st in Tempe, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | — | 58° | — | — | — |
| 2024 | 89° | 54° | 71° | — | — |
| 2023 | 102° | — | — | — | — |
| 2022 | 92° | 53° | 72° | — | — |
| 2021 | 90° | 61° | 75° | — | — |
| 2020 | 96° | 65° | 80° | — | — |
| 2019 | — | 52° | — | — | — |
| 2018 | 91° | 62° | 77° | — | — |
| 2017 | 85° | 55° | 70° | — | — |
| 2016 | 100° | 58° | 79° | — | — |
| 2015 | 77° | 58° | 67° | — | — |
| 2014 | 91° | 54° | 72° | — | — |
| 2013 | 88° | 44° | 66° | — | — |
| 2012 | 88° | 52° | 70° | — | — |
| 2011 | 92° | 56° | 74° | — | — |
| 2010 | 75° | 56° | 65° | 0.53" | — |
| 2009 | 82° | 53° | 68° | — | — |
| 2008 | 91° | 56° | 73° | — | — |
| 2007 | 85° | 57° | 71° | — | — |
| 2006 | 89° | 49° | 69° | — | — |
| 2005 | 90° | 72° | 81° | — | — |
| 2004 | 83° | 56° | 69° | 0.89" | — |
| 2003warmest | 101° | 66° | 83° | — | — |
| 2002 | 88° | 59° | 73° | — | — |
| 2001 | 92° | 58° | 75° | — | — |
| 2000 | — | 63° | — | — | — |
| 1999 | 94° | 58° | 76° | — | — |
| 1998 | 86° | 66° | 76° | — | — |
| 1997 | 90° | 58° | 74° | — | — |
| 1996 | 74° | 51° | 62° | — | — |
| 1995 | 95° | 59° | 77° | — | — |
| 1994 | 87° | 53° | 70° | — | — |
| 1993 | 88° | 50° | 69° | — | — |
| 1992 | 89° | 59° | 74° | — | — |
| 1991 | 89° | 68° | 79° | — | — |
| 1990 | 82° | 53° | 68° | — | — |
| 1989 | 84° | 64° | 74° | 1.45" | — |
| 1988 | 90° | 66° | 78° | — | — |
| 1987 | 94° | 61° | 77° | — | — |
| 1986 | 83° | 51° | 67° | — | — |
| 1985 | 84° | 62° | 73° | — | — |
| 1984 | 76° | 50° | 63° | — | — |
| 1983 | 89° | 60° | 75° | — | — |
| 1982 | 89° | 53° | 71° | — | — |
| 1981 | 89° | 48° | 69° | — | — |
| 1980 | 84° | 48° | 66° | — | — |
| 1979 | 87° | 50° | 69° | — | — |
| 1978 | 72° | 57° | 64° | 0.28" | — |
| 1977 | 85° | 45° | 65° | — | — |
| 1976 | 89° | 56° | 72° | 0.05" | — |
| 1975 | 91° | 56° | 73° | 0.38" | — |
| 1974 | 94° | 61° | 77° | — | — |
| 1973 | 96° | 51° | 74° | — | — |
| 1972coldest | 72° | 49° | 60° | — | — |
| 1971 | 83° | 47° | 65° | — | — |
55 years of data from TEMPE ASU