× Frost Advisory
Until 2025-04-21T06:00:00-07:00 • National Weather Service
* WHAT...Low temperatures ranging between 33 and 36 degrees will result in frost formation. * WHERE...Central and Southern Willamette Valley, Northern and Central Coast Range Valleys and Mountains of Oregon, Foothills of the Northern and Central Oregon Cascades, Lower Columbia River and Cowlitz River Valleys, Tualatin Valley, Outer Southeast Portland Metro, West Columbia River Gorge of Oregon above 500 ft, Upper Hood River Valley, Willapa Hills, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...From midnight Monday Night to 9 AM PDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.