Oregon – A cold, crisp start is gripping the Willamette Valley right now, with frost forming on cars, rooftops, and early spring plants as temperatures hover in the mid-30s.
According to the National Weather Service in Portland, a Frost Advisory remains in effect until 9 a.m., with temperatures dipping as low as 34 to 36 degrees across Eugene, Salem, and the Portland metro. Sensitive vegetation is at risk, especially in low-lying and rural areas.
Patchy fog is also developing in spots like Eugene and Corvallis, briefly reducing visibility during the morning commute. Drivers along I-5 and Highway 99 should watch for sudden visibility drops and slick spots from condensation on colder surfaces.
Conditions improve quickly by late morning as sunshine breaks through. Highs climb near 70°F in Eugene and low 70s toward Portland, bringing a noticeable spring rebound. This rapid warm-up may lead to localized moisture evaporation, but shaded areas could stay damp longer.
Thursday continues the warming trend with highs in the low 70s and only a slight chance of showers developing late in the day. By Friday, rain chances increase to around 40%, with steadier showers likely Friday night into Saturday.
The weekend turns wetter, with widespread rain expected Saturday and lingering showers into Sunday. Roads will become slick again, especially during heavier bursts.
Looking ahead, early next week stays unsettled with additional rain chances before gradual clearing returns. For now, protect plants this morning and plan for changing conditions ahead. Did you notice frost in your neighborhood today?
Five Day Outlook for Eugene, Oregon:
Today: Patchy fog then sunny, high near 70°F
Tonight: Mostly clear, low near 44°F
Thursday: Slight chance of showers, high near 72°F
Friday: Chance of showers, high near 69°F (40%)
Saturday: Showers, high near 57°F
