Weather on September 21 at Black Canyon of the Gunnison
Black Canyon of the Gunnison National Park
Based on 55 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
September 21st in Black Canyon of the Gunnison National Park (via Montrose, CO) typically brings pleasant fall weather, with average highs around 75°F and lows near 44°F — a 31°F daily swing. Over 55 years of records, the warmest September 21st was in 2014 (70°F average), while the coldest was 1978 (43°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 25% of September 21st dates historically, with the wettest September 21st recording 1.65" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for September 21st in Black Canyon of the Gunnison? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 80°F | 48°F | 0" | 0" |
| 2024 | 72°F | 44°F | -- | 0" |
| 2023 | 80°F | 45°F | 0.03" | 0" |
| 2022 | 64°F | 51°F | 0.3" | 0" |
| 2021 | 70°F | 40°F | 0" | 0" |
| 2020 | 85°F | 54°F | 0" | 0" |
| 2019 | 70°F | 41°F | 0" | 0" |
| 2018 | 80°F | 44°F | 0" | 0" |
| 2017 | 81°F | 51°F | 0" | -- |
| 2016 | 77°F | 54°F | 0.05" | 0" |
| 2015 | 82°F | 44°F | 0" | 0" |
| 2014 | 84°F | 56°F | 0.74" | 0" |
| 2013 | 79°F | 44°F | 0" | 0" |
| 2012 | 81°F | 45°F | 0" | 0" |
| 2011 | 80°F | 47°F | 0" | 0" |
| 2010 | 84°F | 49°F | 0" | 0" |
| 2009 | 70°F | 42°F | 0.3" | 0" |
| 2008 | 78°F | 45°F | 0" | 0" |
| 2007 | 79°F | 48°F | 0" | 0" |
| 2006 | 69°F | 40°F | 1.22" | 0" |
| 2005 | 82°F | 46°F | 0" | 0" |
| 2004 | 65°F | 42°F | 1.65" | 0" |
| 2003 | 75°F | 40°F | 0" | 0" |
| 2002 | 72°F | 41°F | 0" | 0" |
| 2001 | 82°F | 45°F | 0" | 0" |
| 2000 | 75°F | 45°F | 0" | 0" |
| 1999 | 76°F | 41°F | 0" | 0" |
| 1998 | 81°F | 57°F | 0" | 0" |
| 1997 | 78°F | 50°F | 0.41" | 0" |
| 1996 | 63°F | 38°F | 0" | 0" |
| 1995 | 79°F | 36°F | 0" | 0" |
| 1994 | 72°F | 46°F | 0.05" | 0" |
| 1993 | 75°F | 37°F | 0" | 0" |
| 1992 | 67°F | 44°F | 0.38" | 0" |
| 1991 | 77°F | 47°F | 0" | 0" |
| 1990 | 60°F | 43°F | 0.08" | 0" |
| 1989 | 72°F | 40°F | 0" | 0" |
| 1988 | 82°F | 51°F | 0.03" | 0" |
| 1987 | 77°F | 42°F | 0" | 0" |
| 1986 | 77°F | 49°F | 0" | 0" |
| 1985 | 63°F | 44°F | 1.09" | 0" |
| 1984 | 82°F | 54°F | 0" | 0" |
| 1983 | 61°F | 30°F | 0" | 0" |
| 1982 | 74°F | 45°F | 0.05" | 0" |
| 1981 | 84°F | 52°F | 0" | 0" |
| 1980 | 79°F | 45°F | 0" | 0" |
| 1979 | 77°F | 45°F | 0" | 0" |
| 1978 | 57°F | 28°F | 0" | 0" |
| 1977 | 78°F | 46°F | 0" | 0" |
| 1976 | 81°F | 44°F | 0" | 0" |
| 1975 | 74°F | 35°F | 0" | 0" |
| 1974 | 80°F | 45°F | 0" | 0" |
| 1973 | 84°F | 48°F | 0" | 0" |
| 1972 | 65°F | 39°F | 0" | 0" |
| 1971 | 64°F | 30°F | 0" | 0" |
September 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