Weather whiplash continues in Los Angeles County, where after weeks of dangerously warm and windy conditions, followed by sudden rainfall and small mudslides, the National Weather Service has issued a warning for a new threat — cold overnight temperatures that could pose a risk of hypothermia.

A cold snap is set to hit swathes of California into the second half of this week, posing risks to people, property, animals and plants.

In less than a week, Southern California’s weather has gone from unseasonably dry and warm – to wet and now bitterly cold. The National Weather Service says the same low pressure system that brought rain to the region last weekend is “still spinning” and producing overnight low temperatures in the 30s