Weather on September 18 at Glacier Bay

Glacier Bay National Park and Preserve

AKAlaska
Avg High55°F
Avg Low43°F
Warmest199955°F
Coldest198541°F

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

YearHighLowPrecipSnow
202551°F48°F2.11"0"
202454°F49°F0.81"0"
202351°F47°F1.73"0"
202259°F41°F0.2"0"
202162°F37°F0"0"
202054°F48°F0.69"0"
201953°F43°F1.07"0"
201859°F30°F0"0"
201751°F46°F0.2"0"
201656°F46°F0.46"0"
201553°F44°F3.4"0"
201456°F50°F0.74"0"
201353°F48°F0.43"0"
201254°F40°F0"0"
201152°F40°F0.1"0"
201070°F36°F0"0"
200958°F48°F0.25"0"
200853°F40°F0.33"0"
200757°F38°F0"0"
200651°F43°F0.1"0"
200553°F49°F2.03"0"
200459°F32°F0"0"
200346°F41°F0.66"0"
200249°F43°F2.03"0"
200157°F49°F0.08"0"
200059°F41°F0.03"0"
199957°F53°F3.99"0"
199861°F34°F0"0"
199755°F50°F3.2"0"
199657°F48°F1.24"0"
199557°F47°F0"0"
199456°F48°F2.08"0"
199350°F41°F0.46"0"
199255°F47°F2.67"0"
199158°F50°F1.6"0"
199051°F45°F1.27"0"
198948°F42°F0.56"0"
198851°F40°F0.18"0"
198750°F47°F0.33"0"
198659°F39°F0"0"
198552°F31°F0"0"
198453°F48°F0.25"0"
198357°F33°F0"0"
198258°F42°F0"0"
198158°F48°F0.41"0"
198052°F46°F0.1"0"
197959°F45°F0"0"
197853°F35°F0.58"0"
197754°F46°F0.08"0"
197656°F42°F0.1"0"
197556°F48°F0.56"0"
197453°F45°F0.13"0"
197361°F31°F0"0"
197257°F35°F0"0"
197150°F45°F1.5"0"

September 18 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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