Weather on August 18
Denver, CO
55 Years of Data
Avg High
86°F
Avg Low
57°F
Warmest
2024
80°F avg
Coldest
2008
58°F avg
About This Date
August 18th in Denver, CO typically brings warm summer weather, with average highs around 86°F and lows near 57°F — a 29°F daily swing. Over 54 years of records, the warmest August 18th was in 2024 (80°F average), while the coldest was 2008 (58°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 30% of August 18th dates historically, with the wettest August 18th recording 3.73" of rain. The last decade has been 4.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.8°F warmer on this date compared to 20-30 years ago.
Planning for August 18th in Denver, CO? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 94° | 59° | 76° | — | — |
| 2024warmest | 95° | 64° | 80° | — | — |
| 2023 | 91° | 65° | 78° | — | — |
| 2022 | 81° | 58° | 69° | — | — |
| 2021 | 92° | 64° | 78° | — | — |
| 2020 | 94° | 59° | 76° | — | — |
| 2019 | 88° | 57° | 72° | — | — |
| 2018 | 87° | 58° | 72° | — | — |
| 2017 | 83° | 56° | 69° | — | — |
| 2016 | 87° | 52° | 69° | — | — |
| 2015 | 74° | 50° | 62° | 0.1" | — |
| 2014 | 89° | 64° | 77° | — | — |
| 2013 | 91° | 59° | 75° | — | — |
| 2012 | 83° | 53° | 68° | — | — |
| 2011 | 89° | 65° | 77° | — | — |
| 2010 | 90° | 54° | 72° | — | — |
| 2009 | 82° | 44° | 63° | 0.03" | — |
| 2008coldest | 70° | 47° | 58° | — | — |
| 2007 | 86° | 56° | 71° | 0.1" | — |
| 2006 | 90° | 60° | 75° | 0.05" | — |
| 2005 | 88° | 55° | 71° | — | — |
| 2004 | 89° | 57° | 73° | — | — |
| 2003 | 83° | 58° | 70° | 0.18" | — |
| 2002 | 78° | 52° | 65° | — | — |
| 2001 | 81° | 52° | 66° | — | — |
| 2000 | 89° | 54° | 71° | 3.73" | — |
| 1999 | 82° | 48° | 65° | 0.18" | — |
| 1998 | 90° | 56° | 73° | 0.23" | — |
| 1997 | 76° | 55° | 65° | 0.38" | — |
| 1996 | 89° | 55° | 72° | — | — |
| 1995 | 92° | 61° | 76° | — | — |
| 1994 | 88° | 58° | 73° | — | — |
| 1993 | 92° | 60° | 76° | — | — |
| 1992 | 73° | 51° | 62° | 0.41" | — |
| 1991 | 84° | 55° | 70° | — | — |
| 1990 | 82° | 52° | 67° | 0.15" | — |
| 1989 | 86° | 59° | 73° | — | — |
| 1988 | 83° | 56° | 69° | — | — |
| 1987 | 88° | 52° | 70° | — | — |
| 1986 | 91° | 57° | 74° | — | — |
| 1985 | 80° | 48° | 64° | — | — |
| 1984 | 85° | 61° | 73° | 1.85" | — |
| 1983 | 92° | 63° | 77° | 0.51" | — |
| 1982 | 83° | 64° | 73° | — | — |
| 1981 | 79° | — | — | — | — |
| 1979 | 75° | 57° | 66° | 0.08" | — |
| 1978 | 91° | 55° | 73° | — | — |
| 1977 | 70° | 61° | 65° | — | — |
| 1976 | 91° | 58° | 74° | 0.18" | — |
| 1975 | 83° | 58° | 70° | — | — |
| 1974 | 89° | 60° | 75° | — | — |
| 1973 | 89° | 65° | 77° | — | — |
| 1972 | 85° | 60° | 72° | 0.18" | — |
| 1971 | 86° | 61° | 73° | — | — |
54 years of data from LAKEWOOD