Weather on October 20
Mesa, AZ
55 Years of Data
Avg High
89°F
Avg Low
57°F
Warmest
1978
82°F avg
Coldest
1984
57°F avg
About This Date
October 20th in Mesa, AZ typically brings warm fall weather, with average highs around 89°F and lows near 57°F — a 32°F daily swing. Over 53 years of records, the warmest October 20th was in 1978 (82°F average), while the coldest was 1984 (57°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 9% of October 20th dates historically, with the wettest October 20th recording 1.52" of rain. The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
Planning for October 20th in Mesa, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 56° | 72° | — | — |
| 2024 | 83° | 53° | 68° | — | — |
| 2022 | 93° | 54° | 73° | — | — |
| 2021 | 89° | 49° | 69° | — | — |
| 2020 | 97° | 59° | 78° | — | — |
| 2019 | 97° | 48° | 72° | — | — |
| 2018 | 93° | 61° | 77° | — | — |
| 2017 | — | 56° | — | — | — |
| 2016 | 98° | 51° | 75° | — | — |
| 2015 | — | 63° | — | 0.05" | — |
| 2014 | 93° | 51° | 72° | 0.33" | — |
| 2012 | 90° | 53° | 71° | — | — |
| 2011 | 94° | 55° | 74° | — | — |
| 2010 | 75° | — | — | 0.03" | — |
| 2009 | 91° | 65° | 78° | — | — |
| 2008 | 95° | 57° | 76° | — | — |
| 2007 | 94° | 61° | 77° | — | — |
| 2006 | 86° | 48° | 67° | — | — |
| 2005 | 83° | 58° | 70° | — | — |
| 2004 | 86° | 61° | 73° | — | — |
| 2003 | 100° | 62° | 81° | — | — |
| 2002 | 86° | 59° | 73° | — | — |
| 2001 | 92° | 60° | 76° | — | — |
| 2000 | — | 60° | — | — | — |
| 1999 | 90° | 59° | 74° | — | — |
| 1998 | 89° | 53° | 71° | — | — |
| 1997 | 89° | 60° | 75° | — | — |
| 1996 | 83° | 63° | 73° | — | — |
| 1995 | 97° | 55° | 76° | — | — |
| 1994 | 87° | 53° | 70° | — | — |
| 1993 | 85° | 46° | 65° | — | — |
| 1992 | 91° | 55° | 73° | — | — |
| 1991 | 97° | 62° | 79° | — | — |
| 1990 | 83° | 59° | 71° | — | — |
| 1989 | 86° | 66° | 76° | — | — |
| 1988 | 88° | 65° | 76° | — | — |
| 1987 | 93° | 58° | 75° | — | — |
| 1986 | 80° | 52° | 66° | — | — |
| 1985 | 88° | 63° | 75° | — | — |
| 1984coldest | 68° | 46° | 57° | — | — |
| 1983 | 87° | 57° | 72° | — | — |
| 1982 | 91° | 56° | 73° | — | — |
| 1981 | 89° | 56° | 72° | — | — |
| 1980 | 86° | 52° | 69° | — | — |
| 1979 | 87° | 60° | 74° | — | — |
| 1978warmest | 97° | 68° | 82° | — | — |
| 1977 | 91° | 63° | 77° | — | — |
| 1976 | 88° | 56° | 72° | — | — |
| 1975 | 88° | 51° | 69° | 0.28" | — |
| 1974 | 91° | 62° | 77° | — | — |
| 1973 | 95° | 57° | 76° | — | — |
| 1972 | 67° | 53° | 60° | 1.52" | — |
| 1971 | 71° | 52° | 61° | — | — |
53 years of data from MESA