Weather on August 18 at Arches
Arches National Park
Based on 54 years of data from Moab, UT
Elevation Note: Arches sits at 4,500 ft. Expect temperatures 16°F cooler than the data shown below, which comes from Moab, UT at a lower elevation.
Planning Your Visit
August 18th in Arches National Park (via Moab, UT) typically brings hot summer weather, with average highs around 97°F and lows near 64°F — a 33°F daily swing. Over 54 years of records, the warmest August 18th was in 1994 (90°F average), while the coldest was 1979 (71°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 19% of August 18th dates historically, with the wettest August 18th recording 1.35" 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 August 18th in Arches? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 97°F | 64°F | 0" | 0" |
| 2024 | 90°F | 64°F | 0.18" | 0" |
| 2023 | 92°F | 69°F | 0" | 0" |
| 2022 | 97°F | 67°F | 0" | 0" |
| 2021 | 95°F | 73°F | 0" | 0" |
| 2020 | 105°F | 62°F | 0" | 0" |
| 2019 | 100°F | 61°F | 0" | 0" |
| 2018 | 95°F | 73°F | 0" | 0" |
| 2017 | 95°F | 59°F | 0" | 0" |
| 2016 | 92°F | 59°F | 0" | 0" |
| 2015 | 99°F | 57°F | 0.1" | 0" |
| 2014 | 100°F | 60°F | 0" | 0" |
| 2013 | 96°F | 65°F | 0" | 0" |
| 2012 | 99°F | 64°F | 0" | 0" |
| 2011 | 102°F | 72°F | 0" | 0" |
| 2010 | 96°F | 66°F | 0.89" | 0" |
| 2009 | 93°F | 55°F | 0" | 0" |
| 2008 | 93°F | 56°F | 0" | 0" |
| 2007 | 97°F | 73°F | 0.13" | 0" |
| 2006 | 97°F | 64°F | 0" | 0" |
| 2005 | 92°F | 59°F | 0" | 0" |
| 2004 | 87°F | 64°F | 0.18" | 0" |
| 2003 | 99°F | 64°F | 0" | 0" |
| 2002 | 103°F | 60°F | 0" | 0" |
| 2001 | 101°F | 58°F | 0" | 0" |
| 2000 | 96°F | 67°F | 0.03" | 0" |
| 1999 | 98°F | 58°F | 0" | 0" |
| 1998 | 97°F | 72°F | 0" | -- |
| 1997 | 96°F | 69°F | 0" | 0" |
| 1996 | 95°F | 63°F | 0.03" | 0" |
| 1995 | 98°F | 59°F | 0" | 0" |
| 1994 | 103°F | 77°F | 0" | 0" |
| 1993 | 100°F | 64°F | 0" | 0" |
| 1992 | 104°F | 66°F | 0" | 0" |
| 1991 | 100°F | 65°F | 0" | 0" |
| 1990 | 90°F | 63°F | 0" | 0" |
| 1989 | 85°F | 59°F | 1.35" | 0" |
| 1988 | 100°F | 62°F | 0" | 0" |
| 1987 | 102°F | 52°F | 0" | 0" |
| 1986 | 107°F | 66°F | 0" | 0" |
| 1985 | 100°F | 63°F | 0" | 0" |
| 1984 | 102°F | 72°F | 0" | 0" |
| 1983 | 100°F | 67°F | 0" | 0" |
| 1982 | 97°F | 67°F | 0.08" | 0" |
| 1981 | 99°F | 62°F | 0" | 0" |
| 1980 | 95°F | 58°F | 0" | 0" |
| 1979 | 83°F | 60°F | 0" | 0" |
| 1978 | 90°F | 59°F | 0" | 0" |
| 1977 | 86°F | 66°F | 1.04" | 0" |
| 1976 | 91°F | 64°F | 0" | 0" |
| 1975 | 96°F | 67°F | 0" | 0" |
| 1974 | 100°F | 55°F | 0" | 0" |
| 1973 | 96°F | 65°F | 0" | 0" |
| 1971 | 101°F | 70°F | 0" | 0" |