Weather on May 21 at Glacier Bay

Glacier Bay National Park and Preserve

AKAlaska
Avg High58°F
Avg Low41°F
Warmest201562°F
Coldest197142°F

Based on 55 years of data from Juneau, AK

Planning Your Visit

May 21st in Glacier Bay National Park (via Juneau, AK) typically brings cool spring weather, with average highs around 58°F and lows near 41°F. Over 55 years of records, the warmest May 21st was in 2015 (62°F average), while the coldest was 1971 (42°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 49% of May 21st dates historically, with the wettest May 21st recording 3.89" 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 May 21st in Glacier Bay? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecipSnow
202553°F42°F0.13"0"
202459°F38°F0"0"
202355°F46°F0"0"
202271°F36°F0"0"
202152°F48°F1.02"0"
202062°F37°F0"0"
201972°F47°F0"0"
201855°F48°F1.78"0"
201755°F51°F3.89"0"
201669°F43°F0"0"
201573°F50°F0"0"
201458°F43°F0"0"
201364°F32°F0"0"
201256°F42°F0.23"0"
201158°F43°F0.08"0"
201055°F46°F0.05"0"
200962°F40°F0"0"
200853°F45°F0.36"0"
200760°F35°F0"0"
200659°F45°F0"0"
200563°F41°F0"0"
200471°F40°F0"0"
200367°F34°F0.1"0"
200268°F50°F0.03"0"
200152°F43°F0.46"0"
200049°F40°F0.36"0"
199952°F43°F0.08"0"
199858°F45°F0.43"0"
199775°F43°F0"0"
199657°F39°F0"0"
199564°F38°F0"0"
199451°F46°F0.36"0"
199356°F48°F0.66"0"
199260°F34°F0"0"
199153°F39°F0"0"
199060°F46°F0"0"
198973°F39°F0"0"
198855°F39°F0.36"0"
198760°F39°F0"0"
198650°F42°F0.25"0"
198555°F37°F0"0"
198456°F43°F0"0"
198350°F46°F0.58"0"
198248°F41°F0.13"0"
198155°F44°F0.1"0"
198055°F37°F0.48"0"
197955°F42°F0.13"0"
197867°F34°F0"0"
197753°F41°F0.08"0"
197656°F41°F0"0"
197546°F42°F0.38"0"
197463°F30°F0"0"
197350°F38°F0.84"0"
197253°F41°F0"0"
197148°F36°F0.66"0"

May 21 at Nearby Parks

Holiday Weather at Glacier Bay

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

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