Freeze and hard freeze warnings were issued for Los Angeles, San Bernardino, Riverside and Ventura counties Friday, with some extending into the weekend, according to the National Weather Service.
Temperatures of 28 degrees or less were expected for two consecutive hours Friday, leading to hard freeze warning in Ventura County until 9 a.m. and mountains in San Bernardino until 8 a.m., the NWS stated.
Los Angeles and Ventura counties were expected to experience temperatures between 29 and 32 degrees, causing a freeze warning to be issued through the day and into Saturday morning.
Riverside and San Bernardino counties were also expected to experience freezing temperatures until around 8 a.m.
Freezing temperatures could kill crops and sensitive vegetation, as well as harm outdoor pets and livestock, and cause hypothermia.
Exposed pipes could also freeze and burst.
People were advised to keep their animals and outdoor plants inside as well as insulate exposed pipes if temperatures fell into the teens.
The coldest Southern California areas as of 2 a.m. were Lockwood Valley at 14 degrees, Lancaster at 23 degrees and Ojai at 28 degrees, the NWS tweeted.
The coldest temperatures were expected before 9 a.m.