Weather on August 21 at Denali
Denali National Park and Preserve
Based on 55 years of data from Fairbanks, AK
Elevation Note: Denali sits at 1,700 ft. Expect temperatures 6°F cooler than the data shown below, which comes from Fairbanks, AK at a lower elevation.
Planning Your Visit
August 21st in Denali National Park (via Fairbanks, AK) typically brings mild summer weather, with average highs around 64°F and lows near 42°F. Over 55 years of records, the warmest August 21st was in 1977 (67°F average), while the coldest was 1974 (43°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 16% of August 21st dates historically, with the wettest August 21st recording 1.27" of rain. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for August 21st in Denali? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 69°F | 41°F | -- | -- |
| 2024 | 54°F | 44°F | -- | -- |
| 2023 | 59°F | 51°F | -- | -- |
| 2022 | 70°F | 43°F | -- | -- |
| 2021 | 57°F | 38°F | -- | -- |
| 2020 | 71°F | 47°F | -- | -- |
| 2019 | 60°F | 40°F | -- | -- |
| 2018 | 64°F | 51°F | -- | -- |
| 2017 | 71°F | 43°F | -- | -- |
| 2016 | 63°F | 51°F | -- | -- |
| 2015 | 69°F | 41°F | -- | -- |
| 2014 | 67°F | 38°F | -- | -- |
| 2013 | 65°F | 35°F | -- | -- |
| 2012 | 62°F | 35°F | -- | -- |
| 2011 | 59°F | 48°F | -- | -- |
| 2010 | 71°F | 32°F | -- | -- |
| 2009 | 68°F | 31°F | -- | -- |
| 2008 | 68°F | 36°F | -- | -- |
| 2007 | 69°F | 47°F | -- | -- |
| 2006 | 56°F | 40°F | -- | -- |
| 2005 | 55°F | 44°F | -- | -- |
| 2004 | 76°F | 45°F | -- | -- |
| 2003 | 69°F | 29°F | -- | -- |
| 2002 | 52°F | 43°F | -- | -- |
| 2001 | 73°F | 35°F | -- | -- |
| 2000 | 60°F | 33°F | -- | -- |
| 1999 | 77°F | 30°F | -- | -- |
| 1998 | 60°F | 45°F | -- | -- |
| 1997 | 70°F | 46°F | -- | -- |
| 1996 | 56°F | 40°F | -- | -- |
| 1995 | 70°F | 45°F | -- | -- |
| 1994 | 58°F | 46°F | -- | -- |
| 1993 | 55°F | 48°F | -- | -- |
| 1992 | 66°F | 50°F | -- | -- |
| 1991 | 67°F | 33°F | -- | -- |
| 1990 | 58°F | 49°F | -- | -- |
| 1989 | 68°F | 41°F | -- | -- |
| 1988 | 67°F | 45°F | 0" | 0" |
| 1987 | 67°F | 39°F | 0" | 0" |
| 1986 | 54°F | 46°F | 0.86" | 0" |
| 1985 | 57°F | 45°F | 0.38" | 0" |
| 1984 | 67°F | 40°F | 0" | 0" |
| 1983 | 64°F | 43°F | 0.58" | 0" |
| 1982 | 65°F | 45°F | 0" | 0" |
| 1981 | 54°F | 45°F | 0.08" | 0" |
| 1980 | 60°F | 29°F | 0.03" | 0" |
| 1979 | 65°F | 40°F | 0" | 0" |
| 1978 | 49°F | 47°F | 0.56" | 0" |
| 1977 | 89°F | 45°F | 0" | 0" |
| 1976 | 64°F | 30°F | 0" | 0" |
| 1975 | 56°F | 49°F | 1.27" | 0" |
| 1974 | 53°F | 32°F | 0" | 0" |
| 1973 | 67°F | 54°F | 1.12" | 0" |
| 1972 | 75°F | 44°F | 0" | 0" |
| 1971 | 55°F | 41°F | 0.1" | 0" |