Portland is starting Halloween with fog. The morning murk should give way to a mostly dry afternoon, with temperatures climbing to about 55 degrees under mostly cloudy skies.
A Frost Advisory remains in effect through 9 a.m. Saturday for the Portland area and nearby parts of northwest Oregon and southwest Washington. The National Weather Service in Portland says frost is possible in interior valleys; sensitive plants should stay covered.
Fog Gives Way To A Dry Halloween Afternoon
Patchy fog is expected before 1 p.m., followed by a quiet, mostly cloudy day. Rain chances are effectively negligible for Portland, making the afternoon a decent window for errands, outdoor plans and last-minute costume logistics.
Halloween night will turn mostly cloudy, with temperatures falling to around 39 degrees and another round of patchy fog possible after 1 a.m. Drivers should slow down, use headlights and leave extra space where visibility changes quickly.
Milder Start Next Week, Rain Later
Sunday should bring morning fog followed by partly sunny skies and a high in the upper 50s. Monday and Tuesday look slightly warmer, with highs near 57 and 59, respectively, before rain chances rise Wednesday night into Thursday.
The updated forecast sharpens Hoodline’s earlier Halloween outlook: the weekend remains largely manageable, but fog and frost are now the main early-day complications, with the wetter pattern waiting until later next week.
