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Upper-level low pressure pinwheels off Oregon Coast

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PORTLAND, Ore. (KOIN) — After a Saturday that featured plenty of cloud cover from the Oregon Coast through the Willamette Valley, we should see more sunshine Sunday.

Temperatures will also warm up slightly, as well. Expect high temperatures to top the 80 degree mark under varying amounts of morning clouds followed by afternoon sunshine across the metro area.

We should also begin to bring down those humidity levels that we’ve been dealing with over the past week or so, as we continue under a southerly flow with plenty of moisture moving up from the desert southwest.

We are also toying with an upper-level low off the coast that continues to pinwheel around and pushing some higher-level clouds through the valley. We cannot rule out the risk of a scattered shower or thunderstorm as well.

High temperatures along the coast on Sunday will top out mostly in the 60s with a few lower 70s.

But summer is going to make a return this coming week with temperatures rebounding back into the 90s by midweek, under plenty of sunshine.

Although meteorological fall begins September 1, summer weather continues to reign over the Pacific Northwest.

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Steve Pierce

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