lowDisruptionWeather

Frost Advisory for Foothills and Valleys of Snohomish and Northern King Counties, Foothills and Valleys of Central King County, Lowlands of Western Skagit and Northwestern Snohomish Counties and 9 more areas

Scheduled window: Sat, Oct 31, 12:00 AM to 9:00 AM PT

Source says

WHAT...Temperatures as low as 34 will result in frost formation. Temperatures may vary due to clearing or fog development in localized areas.

WHERE...Portions of northwest and west central Washington. WHEN...From midnight tonight to 9 AM PDT Saturday. IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. ADDITIONAL DETAILS...The growing season officially ends on October 31, after which no further frost or freeze headlines will be issued.

Source: Weather service

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CitySignal summarizes information from third-party and public sources. Always follow instructions from the relevant government agency, utility, transit provider, or emergency authority.