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Morning fog, then a clear and warm Halloween weekend

The Portland/Vancouver weather forecast from the KGW weather team. Updated several times daily, this includes the outlook around Oregon and in Southwest Washington.

PORTLAND, Oregon — It's a mainly clear night, but fog will form in the western valleys overnight. 

The Saturday morning murk won’t last long, as light offshore winds will help clear the air for a sunny Halloween afternoon.

Look for the full moon rising at 6:23 pm over Portland Saturday. A full moon on Halloween only happens about every 19 years. It’s also called the Hunter’s Moon, which is the full moon after the Harvest Moon. It’s also a blue moon, because it’s the second full moon of the month.

Clear weather continues Sunday with highs both weekend days in the low 60s.

Monday looks like the warmest day, with valley highs in the mid-60s and more sunshine.

Our mainly warm and dry weather pattern begins to change Tuesday.

Rain rolls in on Election Day. It’s followed by successively stronger cold fronts bringing rain each day for the rest of the week. By the weekend, the snow level may be down below 2,000 feet.

From Tuesday on, highs will be in the 50s.

Have a great weekend and a happy and safe Halloween.

Matt Zaffino
KGW Chief Meteorologist

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