Storm To Bring Rain And Cooler Temps To Glendora

LOS ANGELES, CA — A mild warmup is in store for Los Angeles and Orange counties Friday and Saturday before a storm system from Canada brings showers Sunday through Monday, according to the National Weather Service. However, the system is unpredictable, and it remains to be seen how much rain the Southland will actually receive.

Temperatures were expected to hover in the low 70s through Saturday before dropping by as much as 10 degrees Sunday as the storm moves.

As of early Friday morning, the models were "all over the place," said National Weather Service meteorologist Todd Hall from his base in Oxnard in Ventura County, so for now it cannot determined how wet the approaching system will turn out to be.

The answer to that question will hinge on the storm's trajectory. If it lurches over the ocean and sucks up a lot of moisture, the region will be treated to a very wet event, Hall said. But for now, an overland route seems likelier for the approaching system, meaning only light rain and, absent thunderstorms, no danger of mud slides and debris flows, even over slopes previously denuded by wildfires.

The more salient aspect of the storm is likely to be gusty winds starting Saturday night, Hall said. Those winds will shift directions and turn into Santa Anas Monday, when a second day of showers is expected, after which a mix of sunny and partly cloudy skies will develop amid highs in the low to mid 60s, according to an NWS forecast.

City News Service and Patch Staffer Paige Austin contributed to this report.