Weather on August 20 at Glacier Bay
Glacier Bay National Park and Preserve
Based on 55 years of data from Juneau, AK
Planning Your Visit
August 20th in Glacier Bay National Park (via Juneau, AK) typically brings mild summer weather, with average highs around 62°F and lows near 48°F. Over 55 years of records, the warmest August 20th was in 1977 (65°F average), while the coldest was 1974 (48°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 60% of August 20th dates historically, with the wettest August 20th recording 3.51" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Glacier Bay? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 60°F | 54°F | 0.28" | 0" |
| 2024 | 61°F | 48°F | 0.13" | 0" |
| 2023 | 67°F | 48°F | 0" | 0" |
| 2022 | 71°F | 52°F | 0" | 0" |
| 2021 | 62°F | 46°F | 0.03" | 0" |
| 2020 | 64°F | 50°F | 0.03" | 0" |
| 2019 | 63°F | 40°F | 0" | 0" |
| 2018 | 73°F | 45°F | 0" | 0" |
| 2017 | 57°F | 50°F | 1.09" | 0" |
| 2016 | 65°F | 47°F | 0" | 0" |
| 2015 | 64°F | 47°F | 0.58" | 0" |
| 2014 | 67°F | 44°F | 0" | 0" |
| 2013 | 57°F | 52°F | 0.28" | 0" |
| 2012 | 68°F | 50°F | 0" | 0" |
| 2011 | 59°F | 55°F | 3.51" | 0" |
| 2010 | 60°F | 50°F | 0.1" | 0" |
| 2009 | 59°F | 50°F | 0.3" | 0" |
| 2008 | 76°F | 48°F | 0" | 0" |
| 2007 | 61°F | 51°F | 0" | 0" |
| 2006 | 64°F | 47°F | 0" | 0" |
| 2005 | 57°F | 51°F | 0.58" | 0" |
| 2004 | 65°F | 53°F | 0.05" | 0" |
| 2003 | 55°F | 49°F | 0.69" | 0" |
| 2002 | 54°F | 51°F | 0.74" | 0" |
| 2001 | 60°F | 51°F | 0.05" | 0" |
| 2000 | 55°F | 50°F | 1.68" | 0" |
| 1999 | 60°F | 51°F | 0.1" | 0" |
| 1998 | 61°F | 45°F | 0" | 0" |
| 1997 | 68°F | 51°F | 0.03" | 0" |
| 1996 | 56°F | 51°F | 1.09" | 0" |
| 1995 | 67°F | 47°F | 0" | 0" |
| 1994 | 60°F | 52°F | 0.3" | 0" |
| 1993 | 63°F | 47°F | 0" | 0" |
| 1992 | 65°F | 42°F | 0" | 0" |
| 1991 | 55°F | 49°F | 0.89" | 0" |
| 1990 | 65°F | 49°F | 0" | 0" |
| 1989 | 57°F | 50°F | 0.66" | 0" |
| 1988 | 53°F | 50°F | 0.05" | 0" |
| 1987 | 63°F | 44°F | 0" | 0" |
| 1986 | 62°F | 41°F | 0" | 0" |
| 1985 | 52°F | 47°F | 0.58" | 0" |
| 1984 | 55°F | 50°F | 2.69" | 0" |
| 1983 | 59°F | 53°F | 0.66" | 0" |
| 1982 | 72°F | 43°F | 0" | 0" |
| 1981 | 56°F | 52°F | 1.57" | 0" |
| 1980 | 59°F | 49°F | 0.2" | 0" |
| 1979 | 71°F | 45°F | 0" | 0" |
| 1978 | 59°F | 41°F | 0.97" | 0" |
| 1977 | 83°F | 48°F | 0" | 0" |
| 1976 | 57°F | 50°F | 0.71" | 0" |
| 1975 | 56°F | 48°F | 0.91" | 0" |
| 1974 | 55°F | 41°F | 0.46" | 0" |
| 1973 | 73°F | 39°F | 0" | 0" |
| 1972 | 68°F | 48°F | 0" | 0" |
| 1971 | 62°F | 50°F | 0.28" | 0" |