Weather on September 20 at Glacier Bay

Glacier Bay National Park and Preserve

AKAlaska
Avg High55°F
Avg Low44°F
Warmest199556°F
Coldest200044°F

Based on 55 years of data from Juneau, AK

Planning Your Visit

September 20th in Glacier Bay National Park (via Juneau, AK) typically brings cool fall weather, with average highs around 55°F and lows near 44°F. Over 55 years of records, the warmest September 20th was in 1995 (56°F average), while the coldest was 2000 (44°F) — a 12°F range across recorded history. Rain or other precipitation has occurred on about 69% of September 20th dates historically, with the wettest September 20th recording 3.71" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.

The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.

Planning for September 20th in Glacier Bay? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202555°F50°F3.35"0"
202451°F46°F1.37"0"
202353°F45°F2.95"0"
202259°F51°F0"0"
202155°F50°F1.73"0"
202055°F46°F0.05"0"
201956°F52°F3.2"0"
201861°F30°F0"0"
201763°F40°F0"0"
201659°F39°F0"0"
201550°F42°F1.24"0"
201454°F49°F1.73"0"
201356°F48°F2.67"0"
201256°F45°F0.2"0"
201153°F49°F1.35"0"
201060°F33°F0"0"
200952°F49°F1.55"0"
200855°F44°F0.69"0"
200751°F46°F1.55"0"
200650°F47°F1.5"0"
200549°F46°F2.21"0"
200453°F45°F3.3"0"
200351°F46°F1.45"0"
200253°F47°F0.3"0"
200154°F45°F0.33"0"
200053°F35°F0"0"
199951°F49°F1.75"0"
199855°F49°F0.1"0"
199752°F46°F1.17"0"
199650°F41°F0.08"0"
199568°F44°F0"0"
199450°F42°F3.71"0"
199350°F46°F0.41"0"
199252°F43°F0.61"0"
199150°F46°F0.53"0"
199055°F50°F1.37"0"
198959°F48°F0.33"0"
198852°F47°F0.25"0"
198753°F46°F0.08"0"
198658°F45°F0"0"
198553°F44°F0.08"0"
198455°F44°F0.05"0"
198355°F49°F2.9"0"
198258°F43°F0.15"0"
198157°F39°F0"0"
198060°F35°F0"0"
197956°F38°F0"0"
197848°F46°F0.13"0"
197762°F45°F0"0"
197662°F46°F0"0"
197562°F45°F0"0"
197459°F42°F0"0"
197364°F40°F0"0"
197256°F38°F0"0"
197155°F46°F0.03"0"

September 20 at Nearby Parks

Holiday Weather at Glacier Bay

Official NPS WebsiteVisit nps.gov/glba for park information, alerts, and reservations

Explore More at Glacier Bay

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