Weather on August 18
Arvada, CO
55 Years of Data
Avg High
83°F
Avg Low
56°F
Warmest
2021
80°F avg
Coldest
2004
54°F avg
About This Date
August 18th in Arvada, CO typically brings warm summer weather, with average highs around 83°F and lows near 56°F — a 27°F daily swing. Over 55 years of records, the warmest August 18th was in 2021 (80°F average), while the coldest was 2004 (54°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 25% of August 18th dates historically, with the wettest August 18th recording 2.72" of rain. The last decade has been 7.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.1°F warmer on this date compared to 20-30 years ago.
Planning for August 18th in Arvada, CO? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 62° | 76° | — | — |
| 2024 | 94° | 62° | 78° | — | — |
| 2023 | 92° | 63° | 77° | — | — |
| 2022 | 81° | 58° | 69° | — | — |
| 2021warmest | 93° | 66° | 80° | — | — |
| 2020 | 94° | 62° | 78° | — | — |
| 2019 | 85° | 53° | 69° | — | — |
| 2018 | 85° | 59° | 72° | — | — |
| 2017 | 83° | 57° | 70° | — | — |
| 2016 | 87° | 62° | 75° | — | — |
| 2015 | 80° | 48° | 64° | 0.25" | — |
| 2014 | 91° | 58° | 74° | — | — |
| 2013 | 94° | 60° | 77° | — | — |
| 2012 | 84° | 46° | 65° | — | — |
| 2011 | 83° | 56° | 69° | — | — |
| 2010 | 83° | 52° | 67° | — | — |
| 2009 | 66° | 45° | 55° | — | — |
| 2008 | 68° | 43° | 55° | — | — |
| 2007 | 76° | 52° | 64° | — | — |
| 2006 | 71° | 51° | 61° | — | — |
| 2005 | 74° | 51° | 62° | — | — |
| 2004coldest | 65° | 44° | 54° | — | — |
| 2003 | 70° | 46° | 58° | — | — |
| 2002 | 84° | 53° | 69° | — | — |
| 2001 | 81° | 57° | 69° | — | — |
| 2000 | 61° | — | — | 2.72" | — |
| 1999 | 88° | 58° | 73° | 0.08" | — |
| 1998 | 91° | 64° | 78° | 0.08" | — |
| 1997 | 79° | 55° | 67° | 0.81" | — |
| 1996 | 92° | 61° | 76° | — | — |
| 1995 | 92° | 62° | 77° | — | — |
| 1994 | 94° | 52° | 73° | — | — |
| 1993 | 92° | 58° | 75° | 0.05" | — |
| 1992 | 84° | 65° | 74° | — | — |
| 1991 | 82° | 53° | 68° | — | — |
| 1990 | 86° | 53° | 70° | — | — |
| 1989 | 86° | 59° | 73° | — | — |
| 1988 | 78° | 56° | 67° | 0.2" | — |
| 1987 | 90° | 40° | 65° | — | — |
| 1986 | 86° | 60° | 73° | 0.05" | — |
| 1985 | 79° | 48° | 63° | 0.03" | — |
| 1984 | 89° | 61° | 75° | 0.79" | — |
| 1983 | 88° | 62° | 75° | — | — |
| 1982 | 86° | 61° | 73° | — | — |
| 1981 | 80° | 50° | 65° | — | — |
| 1980 | 86° | 56° | 71° | — | — |
| 1979 | 75° | 50° | 63° | 0.48" | — |
| 1978 | 62° | 49° | 55° | — | — |
| 1977 | 80° | 57° | 69° | 0.05" | — |
| 1976 | 85° | 60° | 72° | 0.58" | — |
| 1975 | 88° | 58° | 73° | — | — |
| 1974 | 92° | 61° | 76° | — | — |
| 1973 | 90° | 64° | 77° | — | — |
| 1972 | 88° | 59° | 73° | 0.15" | — |
| 1971 | 86° | 61° | 73° | — | — |
55 years of data from WATERTON NORTH COLORADO