Oregon – Frost crunches underfoot across the southern Willamette Valley this morning, coating windshields and fields in a pale glaze. Breath hangs in the air early as winter tightens its grip during the final days of 2025.
According to the National Weather Service, temperatures around Eugene dropped to near 30 degrees before sunrise, cold enough for widespread frost. Calm winds allow the chill to linger through the morning commute, raising concerns for slick patches on bridges and shaded roads.
Conditions improve later today as sunshine breaks through, pushing highs into the mid-40s. Still, cold nights persist. Another frosty start follows Tuesday, with lows again near freezing. Drivers along I-5 and Highway 126 should stay alert during early travel hours, especially where moisture refreezes before daylight fades.
By Wednesday, patchy fog mixes with lingering frost early, then clouds increase. Moisture begins to creep back into western Oregon late, signaling a pattern change just ahead of New Year’s Eve. While daytime travel remains manageable, conditions may deteriorate after sunset as damp air returns.
Rain chances rise Wednesday night and into New Year’s Day Thursday. Roads turn wet as celebrations and holiday travel continue, and visibility may drop during periods of steady rain. Plan extra time if traveling early Thursday, and keep headlights on during low-light conditions.
Nationally, a powerful winter storm drives snow, ice, and dangerous cold east of the Rockies. Here in Oregon, winter hazards arrive in stages. First frost, then fog, followed by rain as 2026 begins. The shift from cold mornings to wet roads can catch drivers off guard.
More updates may follow as rain chances increase late week. Feeling the frost where you live this morning? Share what conditions look like in your neighborhood.
Five Day Outlook for Eugene, Oregon
Monday: Frost early, then mostly sunny, high near 45
Monday Night: Frost, low near 30
Tuesday: Frost early, then sunny, high near 47
Wednesday: Frost and patchy fog early, high near 48
Thursday: Rain likely, high near 49
