Glacier Bay National Park in September
In September, Glacier Bay National Park averages a high of 54°F and a low of 43°F, with 9.2 inches of precipitation (rain plus melted snow). About 112,000 people visit, the 5th busiest of 12 (busy). Days are 12 hours 44 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 54° / 43°F
- Precipitation
- 9.2in
- Snow
- –in
- Daylight
- 12h 44m
- Visitors
- 112,000
- Crowds
- Busy
Best months for weather and crowds instead: June (very busy) and July (very busy).
Weather 1991–2020 averages at Glacier Bay, AK, 44.2 miles from the park's center, 45 ft. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in September
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Klondike Gold Rush National Historical Park | 57° / 46° | Busy | Mild, wet |
| Wrangell-St. Elias National Park | 55° / 33° | Quiet | Mild, wet |
| Kenai Fjords National Park | 56° / 43° | Quiet | Mild, wet |
| Denali National Park | 50° / 33° | Moderate | Cool |
| Lake Clark National Park | 58° / 44° | Quiet | Mild, wet |
Closures, reservations and alerts: Glacier Bay National Park on nps.gov
All twelve months at Glacier Bay · National parks to visit in September