Weather on August 21 at Black Canyon of the Gunnison
Black Canyon of the Gunnison National Park
Based on 54 years of data from Montrose, CO
Elevation Note: Black Canyon of the Gunnison sits at 8,000 ft. Expect temperatures 28°F cooler than the data shown below, which comes from Montrose, CO at a lower elevation.
Planning Your Visit
August 21st in Black Canyon of the Gunnison National Park (via Montrose, CO) typically brings warm summer weather, with average highs around 85°F and lows near 55°F — a 30°F daily swing. Over 54 years of records, the warmest August 21st was in 2020 (79°F average), while the coldest was 1979 (59°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 22% of August 21st dates historically, with the wettest August 21st recording 1.63" 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 21st in Black Canyon of the Gunnison? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 98°F | 61°F | 0" | 0" |
| 2024 | 86°F | 62°F | -- | 0" |
| 2023 | 98°F | 61°F | 0" | 0" |
| 2022 | 82°F | 54°F | 0" | 0" |
| 2021 | 73°F | 48°F | 0" | 0" |
| 2020 | 97°F | 61°F | 0" | 0" |
| 2019 | 94°F | 63°F | 0" | 0" |
| 2018 | 93°F | 60°F | 0" | 0" |
| 2017 | 90°F | 61°F | 0" | -- |
| 2016 | 85°F | 52°F | 0" | 0" |
| 2015 | 87°F | 55°F | 0" | 0" |
| 2014 | 80°F | 52°F | 0" | 0" |
| 2013 | 88°F | 55°F | 0" | 0" |
| 2012 | 84°F | 53°F | 0" | 0" |
| 2011 | 88°F | 59°F | 0" | 0" |
| 2010 | 81°F | 51°F | 0" | 0" |
| 2009 | 88°F | 52°F | 0" | 0" |
| 2008 | 89°F | 58°F | 0" | 0" |
| 2007 | 92°F | 55°F | 0" | 0" |
| 2006 | 86°F | 55°F | 0" | 0" |
| 2005 | 78°F | 50°F | 0" | 0" |
| 2004 | 76°F | 52°F | 0.05" | 0" |
| 2003 | 92°F | 61°F | 0" | 0" |
| 2002 | 76°F | 58°F | 0.58" | 0" |
| 2001 | 80°F | 57°F | 0.66" | 0" |
| 2000 | 84°F | 55°F | 0.58" | 0" |
| 1999 | 77°F | 58°F | 1.07" | -- |
| 1998 | 84°F | 57°F | 0" | 0" |
| 1997 | 88°F | 54°F | 0" | 0" |
| 1996 | 83°F | 59°F | 0.13" | 0" |
| 1995 | 77°F | 58°F | 0.03" | 0" |
| 1994 | 87°F | 56°F | 0" | 0" |
| 1993 | 81°F | 53°F | 0" | 0" |
| 1992 | 92°F | 55°F | 0" | 0" |
| 1991 | 84°F | 54°F | 0" | 0" |
| 1990 | 78°F | 55°F | 0" | 0" |
| 1989 | 75°F | 45°F | 0.53" | 0" |
| 1988 | 90°F | 64°F | 0" | 0" |
| 1987 | 86°F | 62°F | 0" | 0" |
| 1986 | 93°F | 60°F | 0.1" | 0" |
| 1984 | 78°F | 42°F | 0" | 0" |
| 1983 | 85°F | 55°F | 0" | 0" |
| 1982 | 92°F | 59°F | 0" | 0" |
| 1981 | 89°F | 57°F | 0" | 0" |
| 1980 | 77°F | 44°F | 0" | 0" |
| 1979 | 72°F | 47°F | 0.03" | 0" |
| 1978 | 86°F | 54°F | 0" | 0" |
| 1977 | 86°F | 54°F | 0.3" | 0" |
| 1976 | 85°F | 55°F | 0" | 0" |
| 1975 | 83°F | 56°F | 0" | 0" |
| 1974 | 83°F | 49°F | 0" | 0" |
| 1973 | 89°F | 57°F | 0" | 0" |
| 1972 | 80°F | 54°F | 0" | 0" |
| 1971 | 80°F | 55°F | 1.63" | 0" |
August 21 at Nearby Parks
Holiday Weather at Black Canyon of the Gunnison
Explore More at Black Canyon of the Gunnison
See historical weather for other dates
Back to Black Canyon of the Gunnison