Oregon starts the morning under clear skies and biting cold, with frost sparkling on rooftops and parked cars across the Portland metro. Sidewalks crunch underfoot, and shaded roads feel slick even when they look dry.
According to the National Weather Service, temperatures in Portland hover in the mid-30s early, with widespread frost already reported. Calm to light northeast winds allow cold air to settle, increasing the risk of icy patches on bridges, overpasses, and untreated neighborhood streets.
Drivers along I-5, I-84, and Highway 26 should plan extra time during early travel. Frost lingers on elevated roadways through midmorning, especially in shaded corridors. Use caution when braking, and expect slick spots near river crossings.
By late morning, sunshine helps temperatures rebound into the upper 40s. The improvement is short-lived. Clear skies tonight allow temperatures to dip back below freezing, setting up another frosty start. Pets, plants, and exposed pipes should be protected as repeated freeze-thaw cycles continue.
Thursday brings a familiar pattern. Frost forms early, then gives way to mostly sunny skies. Afternoon highs again reach the mid-40s. Cold air settles back in after sunset, keeping overnight lows near 30.
Friday offers the brightest break so far. Sunshine dominates, and highs near the upper 40s feel milder, though frost still develops early. Saturday stays sunny and dry, with highs near 47. Roads thaw faster by midday, but cold mornings persist.
Looking ahead, the 6–10 day outlook leans near-normal temperatures for western Oregon. Precipitation chances increase next week, with hints of rain and possibly mixed precipitation during colder mornings.
Five-Day Outlook for Portland, Oregon:
Today: Frost early, sunny, high near 48.
Thursday: Frost early, mostly sunny, high near 46.
Friday: Frost early, sunny, high near 47.
Saturday: Frost early, sunny, high near 47.
Sunday: Frost early, mostly sunny, high near 46.
