Weather on August 18
Tucson, AZ
55 Years of Data
Avg High
99°F
Avg Low
75°F
Warmest
2020
96°F avg
Coldest
1984
77°F avg
About This Date
August 18th in Tucson, AZ typically brings hot summer weather, with average highs around 99°F and lows near 75°F. Over 55 years of records, the warmest August 18th was in 2020 (96°F average), while the coldest was 1984 (77°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 22% of August 18th dates historically, with the wettest August 18th recording 2.13" of rain. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for August 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 | 102° | 79° | 90° | — | — |
| 2024 | 98° | 76° | 87° | 0.05" | — |
| 2023 | 99° | 72° | 85° | 2.13" | — |
| 2022 | 95° | 73° | 84° | — | — |
| 2021 | 90° | 75° | 82° | 0.05" | — |
| 2020warmest | 108° | 84° | 96° | — | — |
| 2019 | 102° | 79° | 90° | — | — |
| 2018 | 99° | 78° | 88° | — | — |
| 2017 | 98° | 70° | 84° | — | — |
| 2016 | 100° | 76° | 88° | — | — |
| 2015 | 102° | 78° | 90° | — | — |
| 2014 | 94° | 73° | 83° | — | — |
| 2013 | 107° | 82° | 95° | — | — |
| 2012 | 94° | 72° | 83° | — | — |
| 2011 | 105° | 72° | 88° | 0.13" | — |
| 2010 | 103° | 74° | 88° | — | — |
| 2009 | 107° | 70° | 88° | — | — |
| 2008 | 98° | 76° | 87° | — | — |
| 2007 | 103° | 79° | 91° | — | — |
| 2006 | 97° | 74° | 85° | — | — |
| 2005 | 96° | 75° | 86° | — | — |
| 2004 | 95° | 73° | 84° | 0.2" | — |
| 2003 | 101° | 78° | 89° | 0.1" | — |
| 2002 | 98° | 76° | 87° | — | — |
| 2001 | 96° | 73° | 85° | — | — |
| 2000 | 93° | 71° | 82° | 0.03" | — |
| 1999 | 96° | 76° | 86° | — | — |
| 1998 | 95° | 73° | 84° | — | — |
| 1997 | 98° | 77° | 88° | — | — |
| 1996 | 95° | 78° | 87° | 0.28" | — |
| 1995 | 96° | 76° | 86° | — | — |
| 1994 | 102° | 85° | 93° | — | — |
| 1993 | 97° | 79° | 88° | — | — |
| 1992 | 106° | 77° | 91° | — | — |
| 1991 | 103° | 80° | 91° | 0.08" | — |
| 1990 | 94° | 72° | 83° | — | — |
| 1989 | 96° | 76° | 86° | — | — |
| 1988 | 102° | 80° | 91° | — | — |
| 1987 | 102° | 76° | 89° | — | — |
| 1986 | 95° | 72° | 83° | — | — |
| 1985 | 102° | 78° | 90° | — | — |
| 1984coldest | 85° | 69° | 77° | 0.41" | — |
| 1983 | 91° | 70° | 80° | 0.25" | — |
| 1982 | 100° | 77° | 89° | — | — |
| 1981 | 99° | 79° | 89° | — | — |
| 1980 | 99° | 73° | 86° | — | — |
| 1979 | 94° | 65° | 79° | — | — |
| 1978 | 99° | 76° | 87° | — | — |
| 1977 | 100° | 78° | 89° | — | — |
| 1976 | 100° | 74° | 87° | — | — |
| 1975 | 102° | 70° | 86° | — | — |
| 1974 | 98° | 77° | 88° | — | — |
| 1973 | 107° | 74° | 90° | 0.13" | — |
| 1972 | 96° | 76° | 86° | — | — |
| 1971 | 90° | 71° | 80° | — | — |
55 years of data from TUCSON WFO