Weather on September 18
Tucson, AZ
55 Years of Data
Avg High
95°F
Avg Low
70°F
Warmest
1994
91°F avg
Coldest
1985
72°F avg
About This Date
September 18th in Tucson, AZ typically brings hot fall weather, with average highs around 95°F and lows near 70°F — a 25°F daily swing. Over 55 years of records, the warmest September 18th was in 1994 (91°F average), while the coldest was 1985 (72°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 16% of September 18th dates historically, with the wettest September 18th recording 2.26" 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 September 18th in Tucson, AZ? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 97° | 72° | 84° | 1.27" | — |
| 2024 | 93° | 67° | 80° | — | — |
| 2023 | 99° | 70° | 84° | — | — |
| 2022 | 100° | 69° | 85° | — | — |
| 2021 | 97° | 72° | 84° | 0.05" | — |
| 2020 | 99° | 79° | 89° | — | — |
| 2019 | 98° | 70° | 84° | — | — |
| 2018 | 100° | 76° | 88° | — | — |
| 2017 | 98° | 67° | 82° | — | — |
| 2016 | 101° | 65° | 83° | — | — |
| 2015 | 98° | 72° | 85° | — | — |
| 2014 | 83° | 70° | 76° | 0.08" | — |
| 2013 | 100° | 76° | 88° | — | — |
| 2012 | 98° | 64° | 81° | — | — |
| 2011 | 93° | 64° | 79° | — | — |
| 2010 | 105° | 66° | 86° | — | — |
| 2009 | 98° | 73° | 86° | — | — |
| 2008 | 96° | 64° | 80° | — | — |
| 2007 | 93° | 68° | 81° | — | — |
| 2006 | 88° | 63° | 75° | — | — |
| 2005 | 100° | 68° | 84° | — | — |
| 2004 | 91° | 68° | 80° | 2.26" | — |
| 2003 | 97° | 72° | 84° | — | — |
| 2002 | 92° | 76° | 84° | — | — |
| 2001 | 97° | 71° | 84° | — | — |
| 2000 | 96° | 75° | 86° | — | — |
| 1999 | 94° | 73° | 83° | — | — |
| 1998 | 99° | 72° | 85° | — | — |
| 1997 | 105° | 73° | 89° | 0.41" | — |
| 1996 | 87° | 66° | 77° | — | — |
| 1995 | 95° | 74° | 84° | 0.71" | — |
| 1994warmest | 100° | 82° | 91° | — | — |
| 1993 | 86° | 66° | 76° | — | — |
| 1992 | 99° | 77° | 88° | — | — |
| 1991 | 82° | 72° | 77° | — | — |
| 1990 | 91° | 71° | 81° | — | — |
| 1989 | 98° | 73° | 86° | — | — |
| 1988 | 98° | 64° | 81° | — | — |
| 1987 | 90° | 67° | 78° | — | — |
| 1986 | 98° | 66° | 82° | — | — |
| 1985coldest | 78° | 66° | 72° | 1.32" | — |
| 1984 | 98° | 80° | 89° | — | — |
| 1983 | 94° | 73° | 83° | — | — |
| 1982 | 92° | 65° | 78° | — | — |
| 1981 | 97° | 76° | 86° | — | — |
| 1980 | 104° | 74° | 89° | — | — |
| 1979 | 89° | 70° | 79° | — | — |
| 1978 | 92° | 67° | 79° | — | — |
| 1977 | 96° | 68° | 82° | — | — |
| 1976 | 95° | 66° | 81° | — | — |
| 1975 | 98° | 74° | 86° | — | — |
| 1974 | 90° | 68° | 79° | 0.05" | — |
| 1973 | 103° | 70° | 86° | — | — |
| 1972 | 95° | 68° | 82° | 0.71" | — |
| 1971 | 90° | 65° | 77° | — | — |
55 years of data from TUCSON WFO