Weather on April 21 at Glacier Bay
Glacier Bay National Park and Preserve
Based on 55 years of data from Juneau, AK
Planning Your Visit
April 21st in Glacier Bay National Park (via Juneau, AK) typically brings cool spring weather, with average highs around 50°F and lows near 34°F. Over 55 years of records, the warmest April 21st was in 1993 (50°F average), while the coldest was 1972 (34°F) — a 16°F range across recorded history. Precipitation has occurred on 56% of recorded April 21st dates, with snow falling 2% of the time. The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
Planning for April 21st in Glacier Bay? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 41°F | 34°F | 0.76" | 0" |
| 2024 | 58°F | 29°F | 0.03" | 0" |
| 2023 | 58°F | 32°F | 0" | 0" |
| 2022 | 55°F | 28°F | 0" | 0" |
| 2021 | 56°F | 29°F | 0" | 0" |
| 2020 | 45°F | 42°F | 0.91" | 0" |
| 2019 | 45°F | 40°F | 0.25" | 0" |
| 2018 | 46°F | 29°F | 0.08" | 0" |
| 2017 | 53°F | 33°F | 0.03" | 0" |
| 2016 | 58°F | 33°F | 0.03" | 0" |
| 2015 | 49°F | 33°F | 0" | 0" |
| 2014 | 55°F | 34°F | 0" | 0" |
| 2013 | 50°F | 23°F | 0" | 0" |
| 2012 | 49°F | 33°F | 0.1" | 0" |
| 2011 | 41°F | 35°F | 0.08" | 0" |
| 2010 | 45°F | 38°F | 0.56" | 0" |
| 2009 | 42°F | 32°F | 0.51" | 0" |
| 2008 | 53°F | 27°F | 0" | 0" |
| 2007 | 57°F | 33°F | 0" | 0" |
| 2006 | 50°F | 35°F | 0" | 0" |
| 2005 | 54°F | 44°F | 0.66" | 0" |
| 2004 | 53°F | 30°F | 0" | 0" |
| 2003 | 51°F | 32°F | 0.08" | 0" |
| 2002 | 44°F | 32°F | 0.18" | 0" |
| 2001 | 56°F | 33°F | 0" | 0" |
| 2000 | 46°F | 39°F | 0.2" | 0" |
| 1999 | 51°F | 34°F | 0" | 0" |
| 1998 | 52°F | 39°F | 0.43" | 0" |
| 1997 | 45°F | 42°F | 0.56" | 0" |
| 1996 | 57°F | 38°F | 0.03" | 0" |
| 1995 | 55°F | 40°F | 0" | 0" |
| 1994 | 58°F | 37°F | 0.1" | 0" |
| 1993 | 62°F | 38°F | 0" | 0" |
| 1992 | 49°F | 39°F | 0.33" | 0" |
| 1991 | 49°F | 37°F | 0" | 0" |
| 1990 | 47°F | 40°F | 0.23" | 0" |
| 1989 | 51°F | 33°F | 0.03" | 0" |
| 1988 | 59°F | 32°F | 0" | 0" |
| 1987 | 43°F | 37°F | 0.18" | 0" |
| 1986 | 42°F | 35°F | 0.36" | 0" |
| 1985 | 52°F | 30°F | 0" | 0" |
| 1984 | 48°F | 40°F | 0.25" | 0" |
| 1983 | 50°F | 39°F | 0.13" | 0" |
| 1982 | 48°F | 32°F | 0" | 0" |
| 1981 | 44°F | 39°F | 0.23" | 0" |
| 1980 | 42°F | 38°F | 1.93" | 0" |
| 1979 | 57°F | 28°F | 0" | 0" |
| 1978 | 63°F | 31°F | 0" | 0" |
| 1977 | 57°F | 31°F | 0" | 0" |
| 1976 | 48°F | 33°F | 0" | 0" |
| 1975 | 45°F | 34°F | 0.08" | 0" |
| 1974 | 48°F | 34°F | 0.03" | 0" |
| 1973 | 45°F | 37°F | 0.05" | 0" |
| 1972 | 41°F | 26°F | 0" | 0.1" |
| 1971 | 50°F | 33°F | 0" | 0" |