Weather on October 21
Tucson, AZ
55 Years of Data
Avg High
84°F
Avg Low
58°F
Warmest
2016
84°F avg
Coldest
1996
57°F avg
About This Date
October 21st in Tucson, AZ typically brings warm fall weather, with average highs around 84°F and lows near 58°F — a 26°F daily swing. Over 55 years of records, the warmest October 21st was in 2016 (84°F average), while the coldest was 1996 (57°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 25% of October 21st dates historically, with the wettest October 21st recording 4.19" of rain. The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Tucson, 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 | 91° | 56° | 73° | — | — |
| 2024 | 89° | 50° | 70° | — | — |
| 2023 | 98° | 64° | 81° | — | — |
| 2022 | 91° | 59° | 75° | — | — |
| 2021 | 92° | 54° | 73° | — | — |
| 2020 | 95° | 61° | 78° | — | — |
| 2019 | 84° | 51° | 68° | — | — |
| 2018 | 86° | 65° | 75° | 0.89" | — |
| 2017 | 83° | 56° | 69° | — | — |
| 2016warmest | 96° | 71° | 84° | — | — |
| 2015 | 71° | 54° | 62° | 1.88" | — |
| 2014 | 86° | 62° | 74° | — | — |
| 2013 | 86° | 52° | 69° | — | — |
| 2012 | 87° | 57° | 72° | — | — |
| 2011 | 90° | 56° | 73° | — | — |
| 2010 | 70° | 54° | 62° | 0.81" | — |
| 2009 | 79° | 50° | 64° | — | — |
| 2008 | 91° | 56° | 73° | — | — |
| 2007 | 79° | 58° | 68° | — | — |
| 2006 | 82° | 52° | 67° | — | — |
| 2005 | 88° | 58° | 73° | — | — |
| 2004 | 82° | 52° | 67° | 0.71" | — |
| 2003 | 96° | 63° | 79° | — | — |
| 2002 | 82° | 63° | 72° | — | — |
| 2001 | 91° | 58° | 74° | — | — |
| 2000 | 70° | 61° | 65° | 0.43" | — |
| 1999 | 90° | 56° | 73° | — | — |
| 1998 | 78° | 63° | 70° | 0.23" | — |
| 1997 | 80° | 60° | 70° | 0.36" | — |
| 1996coldest | 64° | 50° | 57° | — | — |
| 1995 | 93° | 60° | 77° | — | — |
| 1994 | 86° | 60° | 73° | — | — |
| 1993 | 84° | 64° | 74° | — | — |
| 1992 | 88° | 63° | 75° | — | — |
| 1991 | 87° | 70° | 78° | 0.08" | — |
| 1990 | 79° | 46° | 62° | — | — |
| 1989 | 81° | 60° | 70° | 0.64" | — |
| 1988 | 86° | 64° | 75° | — | — |
| 1987 | 89° | 69° | 79° | — | — |
| 1986 | 79° | 48° | 63° | — | — |
| 1985 | 82° | 62° | 72° | — | — |
| 1984 | 72° | 56° | 64° | — | — |
| 1983 | 85° | 57° | 71° | — | — |
| 1982 | 86° | 53° | 70° | — | — |
| 1981 | 82° | 62° | 72° | — | — |
| 1980 | 81° | 58° | 69° | — | — |
| 1979 | 71° | 54° | 62° | 0.38" | — |
| 1978 | 76° | 62° | 69° | 4.19" | — |
| 1977 | 79° | 53° | 66° | — | — |
| 1976 | 83° | 60° | 71° | 0.89" | — |
| 1975 | 76° | 56° | 66° | 0.08" | — |
| 1974 | 82° | 65° | 73° | 0.1" | — |
| 1973 | 94° | 60° | 77° | — | — |
| 1972 | 70° | 50° | 60° | — | — |
| 1971 | 86° | 51° | 69° | — | — |
55 years of data from TUCSON WFO