Glacier Bay National Park weather in December
December in Glacier Bay National Park: freezing, soaked, with clean air — one of the weakest months to visit.
#12 of 12 months in Glacier Bay National Park · #575 of 604 destinations to visit in December · comfort 29/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Glacier Bay National Park climate normals — December
| Daytime high | -1°C / 29°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -4°C / 24°F | |
| Feels like (high) | -6°C / 21°F | |
| Rainfall | 604 mm / 23.8 in | ⛈ soaked |
| Rainy days | 25 days | |
| Humidity | 83% | 💦 very humid |
| Dew point | -6°C / 22°F | |
| Sunshine | 1.7 h/day | |
| Daylight | 6.5 h | |
| Wind | 18 km/h / 11 mph | |
| Snowfall | 385.1 cm / 151.6 in | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Glacier Bay National Park?
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Glacier Bay National Park in December — FAQ
- Is December a good time to visit Glacier Bay National Park?
- December in Glacier Bay National Park: freezing, soaked, with clean air — one of the weakest months to visit. It ranks #12 of 12 months for Glacier Bay National Park on SeasonMap's comfort score (29/100).
- What is the weather like in Glacier Bay National Park in December?
- In December, Glacier Bay National Park averages a daily high of -1.4°C and a low of -4.3°C, with about 604.2 mm of rain over roughly 24.6 rainy days.
- What is the air quality in Glacier Bay National Park in December?
- Glacier Bay National Park has a mean US Air Quality Index of about 38 in December.
- Does it snow in Glacier Bay National Park in December?
- Glacier Bay National Park sees roughly 385.1 cm of snowfall in December.