Mini heat wave to hit Southern California - here's when

Weather Forecast for Friday, May 9

The latest forecast and air quality conditions for the greater Los Angeles area, including beaches, valleys and desert regions.

LOS ANGELES - Warmer temperatures and dry weather are on tap for Mother's Day weekend across Southern California. 

What we know:

According to the National Weather Service, heat will peak over the interior valleys on Friday and Saturday.

"Temperatures will be warming rapidly, with highs well into the 90s in the inland valleys with a 20-30% chance of reaching the first 100 [degrees] of spring in places like Woodland Hills and Paso Robles," the NWS said. 

Forecasters said temperatures "will be very close to daily records in the valleys."

A heat advisory will be in effect from 10 a.m. Friday through 9 p.m. Saturday for the Santa Clarita Valley, the Santa Monica Mountains Recreational Area, Calabasas, Agoura Hills, the San Fernando Valley and the San Gabriel Valley. 

Forecasters warned that with temperatures potentially reaching triple digits, there will be a heightened risk of heat illness for sensitive populations, such as the very young, the elderly and people without air conditioning.

Officials are advising anyone with hiking plans to delay them if possible. Those who do decide to go hiking should avoid doing some during peak hours and bring plenty of water. 

What's next:

Conditions are expected to cool starting Sunday.

"The high pressure ridge will shift east late Saturday into Sunday allowing cooler air from the ocean to surge inland," according to the NWS. "The timing of this surge will determine how much temperatures drop on Sunday."

Temperatures could still reach into the 90s on Sunday in the valleys.

"Much cooler temperatures" are anticipated by the middle of next week, forecasters said.