California – Cold air settles quietly along the North Coast this morning, coating fields and rooftops with a silvery edge. Calm winds and clear skies allowed temperatures to dip into the mid-30s, creating ideal conditions for frost formation before sunrise.
A Frost Advisory remains in effect across the northern Humboldt Coast through mid-morning. Sensitive plants may be damaged if left uncovered, and rural roads could feel slick in shaded spots. Drivers should remain cautious early, especially along low-lying stretches near fields and marshes.
According to the National Weather Service, this cold start marks a brief pause before a much wetter pattern arrives. Clouds increase later today, with rain becoming more likely by Wednesday afternoon. The first round of precipitation should be light, but it sets the stage for a stronger system approaching New Year’s Day 2026.
By New Year’s Day, rain becomes widespread across Eureka and nearby communities, including Arcata, McKinleyville, and Ferndale. Periods of steady rain are expected through Thursday night and Friday, with locally heavier bursts possible. Wet pavement, ponding on roadways, and reduced visibility could complicate holiday travel along U.S. 101.
Hydrologists are also watching small rivers and creeks closely. Repeated rounds of rain could push waterways toward bankfull levels by Friday and into the weekend. Minor flooding of low-lying roads and poor drainage areas may develop if rainfall intensifies.
Temperatures moderate as rain moves in, with highs climbing into the mid to upper 50s. While frost risk fades, saturated ground and runoff become the primary concern heading into the first weekend of 2026.
Residents should protect plants early today, clear storm drains, and plan extra travel time later this week. Avoid driving through water-covered roads if heavy rain develops. Are you noticing frost or rising water near your neighborhood this morning?
Five-Day Outlook for Eureka, California
Today: Frost early, then sunny, high near 55
Wednesday: Chance of rain late, high near 57
New Year’s Day 2026 (Thursday): Rain likely, high near 56
Friday: Rain, high near 57
Saturday: Rain likely, high near 52
