45°31'N / 122°40'W / Altitude 10 m / 00:26 2026/10/22, America/Los_Angeles (UTC-7)
From: 2026/10/21, 18:55
To: 2026/10/22, 12:00
* WHAT...Temperatures as low as 34 to 36 degrees will result in frost formation. * WHERE...Portions of northwest and west central Oregon and southwest Washington. * WHEN...From 11 PM Friday to 9 AM PDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Inner Portland Metro,Multnomah
Take steps now to protect tender outdoor plants from the cold.
Consider temporarily moving outdoor potted plants indoors if they are
sensitive to cold temperatures.
Consider temporarily covering sensitive plants with a lightweight
cotton fabric (i.e., bedsheets, thin blankets), as this will help
retain heat and provide frost protection for your plants.
NWS Portland OR
2026/10/21, 18:55From: 2026/10/21, 18:55
To: 2026/10/22, 12:00
* WHAT...Temperatures as low as 33 to 36 degrees will result in frost formation. * WHERE...In Oregon, Tualatin Valley, Central Oregon Coast Range, and Central Oregon Coast Range Lowlands Counties. In Washington, Cowlitz County Lowlands, North Clark County Lowlands, South Washington Cascade Foothills, and Willapa Hills Counties. * WHEN...For the first Frost Advisory, from 11 PM Thursday to 9 AM PDT Friday. For the second Frost Advisory, from 11 PM Friday to 9 AM PDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
MultnomahTake steps now to protect tender outdoor plants from the cold.
Consider temporarily moving outdoor potted plants indoors if they are
sensitive to cold temperatures.
Consider temporarily covering sensitive plants with a lightweight
cotton fabric (i.e., bedsheets, thin blankets), as this will help
retain heat and provide frost protection for your plants.NWS Portland OR2026/10/21, 18:55