Weather on July 18 at Great Sand Dunes
Great Sand Dunes National Park and Preserve
Based on 55 years of data from Alamosa, CO
Elevation Note: Great Sand Dunes sits at 8,200 ft. Expect temperatures 29°F cooler than the data shown below, which comes from Alamosa, CO at a lower elevation.
Planning Your Visit
July 18th in Great Sand Dunes National Park (via Alamosa, CO) typically brings warm summer weather, with average highs around 83°F and lows near 48°F — a 35°F daily swing. Over 55 years of records, the warmest July 18th was in 2003 (71°F average), while the coldest was 1987 (57°F) — a 14°F range across recorded history. Rain or other precipitation has occurred on about 33% of July 18th dates historically, with the wettest July 18th recording 3.96" 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 July 18th in Great Sand Dunes? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 78°F | 47°F | 0.25" | 0" |
| 2024 | 83°F | 49°F | 0.03" | 0" |
| 2023 | 92°F | 46°F | 0" | 0" |
| 2022 | 88°F | 50°F | 0" | 0" |
| 2021 | 85°F | 49°F | 0" | 0" |
| 2020 | 85°F | 49°F | 0.18" | 0" |
| 2019 | 86°F | 45°F | 0" | 0" |
| 2018 | 84°F | 49°F | 0.05" | 0" |
| 2017 | 83°F | 50°F | 0" | 0" |
| 2016 | 89°F | 51°F | 0" | 0" |
| 2015 | 79°F | 47°F | 0.13" | 0" |
| 2014 | 78°F | 47°F | 0" | 0" |
| 2013 | 79°F | 46°F | 0" | 0" |
| 2012 | 82°F | 42°F | 0" | -- |
| 2011 | 87°F | 55°F | 0" | -- |
| 2010 | 85°F | 46°F | 0" | 0" |
| 2009 | 88°F | 45°F | 0" | 0" |
| 2008 | 82°F | 45°F | 0.03" | 0" |
| 2007 | 88°F | 48°F | 0" | 0" |
| 2006 | 82°F | 50°F | 0.05" | 0" |
| 2005 | 91°F | 47°F | 0" | 0" |
| 2004 | 83°F | 54°F | 0.08" | 0" |
| 2003 | 91°F | 51°F | 0" | 0" |
| 2002 | 88°F | 48°F | 0" | 0" |
| 2001 | 81°F | 46°F | 0" | 0" |
| 2000 | 86°F | 45°F | 0" | 0" |
| 1999 | 75°F | 55°F | 0.38" | 0" |
| 1998 | 86°F | 49°F | 0.13" | 0" |
| 1997 | 84°F | 44°F | 0" | 0" |
| 1996 | 82°F | 49°F | 0" | 0" |
| 1995 | 69°F | 54°F | 0.28" | 0" |
| 1994 | 83°F | 49°F | 0" | 0" |
| 1993 | 82°F | 39°F | 0" | 0" |
| 1992 | 76°F | 40°F | 0" | 0" |
| 1991 | 86°F | 49°F | 0" | 0" |
| 1990 | 82°F | 45°F | 0" | 0" |
| 1989 | 92°F | 44°F | 0" | 0" |
| 1988 | 86°F | 43°F | 0" | 0" |
| 1987 | 77°F | 38°F | 0" | 0" |
| 1986 | 78°F | 47°F | 0.08" | 0" |
| 1985 | 79°F | 54°F | 0" | 0" |
| 1984 | 83°F | 52°F | 0.43" | 0" |
| 1983 | 85°F | 50°F | 0" | 0" |
| 1982 | 84°F | 50°F | 0.03" | 0" |
| 1981 | 77°F | 51°F | 0" | 0" |
| 1980 | 88°F | 50°F | 0" | 0" |
| 1979 | 79°F | 45°F | 0" | 0" |
| 1978 | 83°F | 50°F | 0" | 0" |
| 1977 | 83°F | 48°F | 0" | 0" |
| 1976 | 85°F | 55°F | 0" | 0" |
| 1975 | 83°F | 49°F | 0" | 0" |
| 1974 | 83°F | 53°F | 0.08" | 0" |
| 1973 | 76°F | 53°F | 1.07" | 0" |
| 1972 | 82°F | 47°F | 0.03" | 0" |
| 1971 | 85°F | 54°F | 3.96" | 0" |