Will I be hot?
Will I be hot in Juneau in May?
Verdict
No — No, comfortable.
Highs cap at 55°F — no heat-management gear needed.
Day vs. night
Day
55°F
Cool
Sweater weather with the option to add a light shell.
Night
41°F
Cold
Cold enough that a hat and gloves become mandatory.
Why
Juneau in May averages highs of 55°F, lows of 41°F, 17 rainy days.
Temperature is comfortable across the day; pack for style and weather resistance, not heat management.