Weather on September 18 at Glacier Bay
Glacier Bay National Park and Preserve
Based on 55 years of data from Juneau, AK
Planning Your Visit
September 18th in Glacier Bay National Park (via Juneau, AK) typically brings cool fall weather, with average highs around 55°F and lows near 43°F. Over 55 years of records, the warmest September 18th was in 1999 (55°F average), while the coldest was 1985 (41°F) — a 14°F range across recorded history. Rain or other precipitation has occurred on about 73% of September 18th dates historically, with the wettest September 18th recording 3.99" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 18th 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 | 51°F | 48°F | 2.11" | 0" |
| 2024 | 54°F | 49°F | 0.81" | 0" |
| 2023 | 51°F | 47°F | 1.73" | 0" |
| 2022 | 59°F | 41°F | 0.2" | 0" |
| 2021 | 62°F | 37°F | 0" | 0" |
| 2020 | 54°F | 48°F | 0.69" | 0" |
| 2019 | 53°F | 43°F | 1.07" | 0" |
| 2018 | 59°F | 30°F | 0" | 0" |
| 2017 | 51°F | 46°F | 0.2" | 0" |
| 2016 | 56°F | 46°F | 0.46" | 0" |
| 2015 | 53°F | 44°F | 3.4" | 0" |
| 2014 | 56°F | 50°F | 0.74" | 0" |
| 2013 | 53°F | 48°F | 0.43" | 0" |
| 2012 | 54°F | 40°F | 0" | 0" |
| 2011 | 52°F | 40°F | 0.1" | 0" |
| 2010 | 70°F | 36°F | 0" | 0" |
| 2009 | 58°F | 48°F | 0.25" | 0" |
| 2008 | 53°F | 40°F | 0.33" | 0" |
| 2007 | 57°F | 38°F | 0" | 0" |
| 2006 | 51°F | 43°F | 0.1" | 0" |
| 2005 | 53°F | 49°F | 2.03" | 0" |
| 2004 | 59°F | 32°F | 0" | 0" |
| 2003 | 46°F | 41°F | 0.66" | 0" |
| 2002 | 49°F | 43°F | 2.03" | 0" |
| 2001 | 57°F | 49°F | 0.08" | 0" |
| 2000 | 59°F | 41°F | 0.03" | 0" |
| 1999 | 57°F | 53°F | 3.99" | 0" |
| 1998 | 61°F | 34°F | 0" | 0" |
| 1997 | 55°F | 50°F | 3.2" | 0" |
| 1996 | 57°F | 48°F | 1.24" | 0" |
| 1995 | 57°F | 47°F | 0" | 0" |
| 1994 | 56°F | 48°F | 2.08" | 0" |
| 1993 | 50°F | 41°F | 0.46" | 0" |
| 1992 | 55°F | 47°F | 2.67" | 0" |
| 1991 | 58°F | 50°F | 1.6" | 0" |
| 1990 | 51°F | 45°F | 1.27" | 0" |
| 1989 | 48°F | 42°F | 0.56" | 0" |
| 1988 | 51°F | 40°F | 0.18" | 0" |
| 1987 | 50°F | 47°F | 0.33" | 0" |
| 1986 | 59°F | 39°F | 0" | 0" |
| 1985 | 52°F | 31°F | 0" | 0" |
| 1984 | 53°F | 48°F | 0.25" | 0" |
| 1983 | 57°F | 33°F | 0" | 0" |
| 1982 | 58°F | 42°F | 0" | 0" |
| 1981 | 58°F | 48°F | 0.41" | 0" |
| 1980 | 52°F | 46°F | 0.1" | 0" |
| 1979 | 59°F | 45°F | 0" | 0" |
| 1978 | 53°F | 35°F | 0.58" | 0" |
| 1977 | 54°F | 46°F | 0.08" | 0" |
| 1976 | 56°F | 42°F | 0.1" | 0" |
| 1975 | 56°F | 48°F | 0.56" | 0" |
| 1974 | 53°F | 45°F | 0.13" | 0" |
| 1973 | 61°F | 31°F | 0" | 0" |
| 1972 | 57°F | 35°F | 0" | 0" |
| 1971 | 50°F | 45°F | 1.5" | 0" |