Eureka, CA – A cold snap is expected to bring frosty conditions to interior Mendocino and southern Lake counties overnight Friday into Saturday morning, prompting a Frost Advisory across the region.
According to the National Weather Service Eureka Office, temperatures in interior valleys are forecast to dip into the low to mid-30s, with areas such as Covelo, Laytonville, and parts of southern Lake County expected to experience frost formation. The advisory is in effect from Friday evening through 9 a.m. Saturday.
Residents are advised to protect sensitive plants and provide adequate shelter for pets during the cold hours. Light frost can damage vegetation and unprotected outdoor plumbing, especially in valleys and wind-sheltered areas.
Typical late March temperatures in the region are generally warmer, making this frost event unusual for the season. The NWS warns that these chilly conditions could affect early spring agriculture and gardening.
Drivers should also be cautious of potentially slick roads in rural areas early Saturday. For the latest weather updates and localized alerts, residents can visit www.weather.gov/eka and enter their zip code for tailored information.
The frost advisory underscores the need for cold-weather preparedness even as spring progresses in Northern California.




