Yes

Based on the weather in Portland, Oregon, United States Of America as of February 12, 2016 8:29pm local time

Why? Because it's pretty chilly.
Current Conditions
Partly Cloudy
Temp: 47.3°F8.5°C
Wind: 3.3 MPH5.3 KPH
Precipitation: None

Next 2 hours: Yes

Next 4 hours: Yes

Next 8 hours: Yes