× Frost Advisory
Until 2025-04-12T05:00:00-07:00 • National Weather Service
* WHAT...Temperatures as low as 33 degrees F 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, Willapa Hills and Adjacent River Valleys of Pacific and Wahkiakum Counties, Lower Columbia River and Cowlitz River Valleys, Portland Metro Hills, Tualatin Valley, West Columbia River Gorge of Oregon above 500 ft, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...From midnight Saturday Night to 8 AM PDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Rural portions of the southern Willamette Valley, Coast Range valleys, and the valleys of the Cascade Foothills will be the most at risk of frost development. Areas that are shaded will maintain frost longer through the morning.