Glacier Bay weather, month by month
- Jul high
- 61°F
- hottest month
- Jan low
- 26°F
- coldest month
- Rain + snowmelt
- 72.6in / yr
- wettest: Oct
- Snowfall
- —in / yr
- rare
- Days ≥ 90°F
- 0/ yr
- Nights ≤ 32°F
- 149/ yr
Glacier Bay
Month by month
| Month | High | Low | Rain | Wet days | Sunrise | Sunset | Daylight | Crowds |
|---|---|---|---|---|---|---|---|---|
| Jan | 32° | 26° | 6.7″ | — | 8:46 AM | 3:47 PM | 7h 01m | 0 |
| Feb | 34° | 26° | 4.8″ | — | 7:42 AM | 5:01 PM | 9h 20m | 0 |
| Mar | 37° | 28° | 4.3″ | — | 7:24 AM | 7:09 PM | 11h 45m | 0 |
| Apr | 46° | 33° | 3.4″ | — | 5:54 AM | 8:20 PM | 14h 26m | 6 |
| May | 54° | 39° | 3.1″ | — | 4:38 AM | 9:30 PM | 16h 52m | 70 |
| Jun | 59° | 45° | 2.8″ | — | 3:56 AM | 10:19 PM | 18h 23m | 92 |
| Jul | 61° | 49° | 4.8″ | — | 4:22 AM | 10:05 PM | 17h 43m | 100 |
| Aug | 60° | 48° | 6.0″ | — | 5:27 AM | 8:57 PM | 15h 30m | 98 |
| Sep | 54° | 43° | 9.2″ | — | 6:36 AM | 7:29 PM | 12h 53m | 75 |
| Oct | 45° | 37° | 10.2″ | — | 7:44 AM | 6:02 PM | 10h 19m | 38 |
| Nov | 37° | 30° | 8.5″ | — | 7:58 AM | 3:46 PM | 7h 48m | 0 |
| Dec | 33° | 27° | 8.9″ | — | 8:54 AM | 3:11 PM | 6h 18m | 0 |
How to read this
These are NOAA’s official 1991–2020 climate normals for one weather station, not a model of the whole park. The station is the one with complete temperature and precipitation normals nearest to a visitor center. Highs and lows are daily averages for the month; “wet days” are days with at least 0.01 inch of precipitation. Mountain parks can be 10–20 °F cooler at their high points than at the station, and the NPS weather page for Glacier Bay is the place for current conditions and seasonal closures.
Sunrise and sunset are computed with the NOAA solar equations for the park’s coordinates and shown in America/Anchorage time for the 15th of each month of 2027; they are accurate to about a minute.
Sources · 3
- 1.U.S. Climate Normals 1991–2020 — monthly normals station inventory · National Centers for Environmental Information (NOAA)
- 2.Glacier Bay National Park & Preserve — Weather (nps.gov) · National Park Service
- 3.Glacier Bay National Park & Preserve — Visitor Use Statistics · National Park Service (IRMA)
FAQ
Glacier Bay weather questions
- What is the hottest month at Glacier Bay?
- July, with an average high of 61°F and an average low of 49°F at Glacier Bay (NOAA 1991–2020 normals).
- How cold does Glacier Bay get in winter?
- January is the coldest month, averaging a low of 26°F and a high of 32°F at Glacier Bay. About 149 nights a year drop to freezing or below.
- Does it snow at Glacier Bay?
- Glacier Bay records almost no snowfall (no snow normals). Higher elevations in the park can differ.
- When is the rainy season at Glacier Bay?
- October is the wettest month on average (10.2 inches of precipitation at Glacier Bay); the station's annual total is 72.6 inches.
- How many hours of daylight does Glacier Bay get?
- About 18h 23m on June 15 and 6h 18m on December 15 (sunrise 3:56 AM, sunset 10:19 PM in June; 8:54 AM to 3:11 PM in December, America/Anchorage time).
- What is the best month to visit Glacier Bay for weather?
- By NOAA's normals, average highs sit between 55°F and 85°F in June, July and August. Weather in the park varies with elevation; this is the Glacier Bay station.
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