Odd, Rollercoaster Weather for Oregon Coast, Passes, Valley: Warm Day to Some Snow

Published 04/06/22 at 4:59 AM PST
By Oregon Coast Beach Connection staff

(Oregon Coast) – Quite a run of rollercoaster weather is in store for the Oregon coast and southern Washington and especially the western inland part of Oregon and south Washington, with temperatures soaring to the highest of the year in some places then plunging abruptly by 20 degrees or more. There's even the likelihood of some snow in the Oregon Coast Range over the weekend and some in the valley / southern Oregon regions.

The National Weather Service (NWS) is showing something like 75 degrees will be popping up Thursday in many places in the I-5 Corridor, such as Vancouver, Portland, Eugene, etc. On the Oregon coast, look for extremely pleasant, work-skipping weather at around the mid 60s, and maybe a little warmer on the southern Oregon coast.

By Friday, it will be like a switch has turned off, although the Oregon coast won't be as drastic a change as inland. Along the beaches, things get rainy and cloudy with temps in the 50s, but dropping to the upper 40s by Sunday. Inland will see overnight temps in the mid to low 30s.

See Oregon Coast Weather - Washington Coast Weather

On the Oregon Coast Range passes, the snow level moves down to 1300 feet by Saturday, then lowers to 500 feet in a few areas, which will result in some snow in the upper elevations through Monday morning. Some of that will likely stick, which will mean caution should be exercised going to and from the coastline after Saturday night.

In the Portland Metro area and elsewhere, snow is likely to be seen flying around on Sunday – but not sticking. It all starts to turn on Friday.

“This will mark the beginning of a stretch of cool and showery weather,” the NWS said. “While temperatures should be fairly seasonable on Friday with highs close to 60 degrees across the interior lowlands and mid 50s along the coast, the airmass over the region will turn even colder this weekend into Monday as a large upper level trough deepens over the western continental US.”

Temps high in the atmosphere will get chillier, the NWS said, and thus things can get a bit dramatic closer to Earth.

“With temperatures aloft being so cold, showers will not have to grow very deep to produce small hail and possibly a few flashes of lightning in the afternoon,” the NWS said.

After Thursday's almost tropical day for the Oregon coast, it's the weekend in the inland portions of the state that's the real story, as the coastline won't get nearly as cold overnight. In fact, the south coast stays above 50 during the weekend days and only drops into the upper 40s at night, whereas as the northern half gets much colder overnight.

Even so, the NWS said you shouldn't expect a snow day if you live inland. It will be an odd sight this late in the year, however.

“Accumulating snow seems very unlikely given the time of year alone,” the NWS said. “The record latest date for measurable snow (0.1 inch or more) at Portland is March 25 (in 1965), and the record latest is April 11 for Eugene (set in 1911). So, even if some wet snowflakes do mix in with rain down to the valley floor, expect very little to no impacts.”

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