Pacific Northwest Weather This Weekend: Showers Ease Friday, But Frost and Patchy Fog Loom for Eugene

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Frost, and fog
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Oregon – Rain taps steadily against rooftops across Eugene this morning, soaking leaves and slicking roadways under a heavy mist. Headlights glow dim in the drizzle as south winds stir faintly — the kind of damp, gray start that defines late November across the Willamette Valley.

The National Weather Service reports widespread rain through today, tapering into scattered showers by late Friday morning. Winds from the south could gust near 20–25 mph at times, making travel slow and visibility poor on I-5 and Highway 126. Motorists should plan extra time, especially through midmorning when conditions remain wet and foggy.

Friday afternoon brings a short break — mostly cloudy skies and highs near 55°F. By Saturday, another system brushes the coast, but only a slight chance of drizzle is expected inland. The weekend turns cooler and calmer, with patchy fog and lows dipping into the mid-30s by Sunday night.

Looking ahead, NOAA’s extended outlook shows below-normal temperatures and above-average precipitation expanding across the Pacific Northwest from December 2–6. That pattern hints at a “winter tease” — early signs of frost, mountain snow, and cooler air sliding south as we head into the first full week of December.

Five-Day Outlook for Eugene, OR

  • Friday: Rain ending early, mostly cloudy, high 55°F.
  • Saturday: Mostly cloudy, slight rain chance, high 50°F.
  • Sunday: Mostly cloudy, low 35°F, patchy fog late.
  • Monday: Slight rain chance, high 50°F.
  • Tuesday: Partly sunny, high 49°F.