Will I be cold?
Will I be cold in Portland in February?
Verdict
Yes — Yes, cold.
Lows drop to 38°F on average — noticeably cold, especially after sundown.
Day vs. night
Day
51°F
Cool
Sweater weather with the option to add a light shell.
Night
38°F
Cold
Cold enough that a hat and gloves become mandatory.
Why
Portland in February averages highs of 51°F, lows of 38°F, 13 rainy days.
Plan for real winter kit — an insulated coat, warm hat, and gloves rather than a light jacket.