Cooler temperatures and showers are in store later this week, according to National Weather Service forecasters.
A low-pressure system off the California coast is expected to move slowly toward the east and southeast this week, bringing showers and a slight chance of thunderstorms to Southern California late Wednesday night through early Thursday evening.
The agency said general rainfall amounts will range from one-tenth to a quarter-inch near the coast to around half an inch in the mountains, but thunderstorms could produce heavy rainfall and small hail in some areas. The snow level will likely drop to 6,500 to 7,000 feet Thursday evening, according to the NWS.
Daytime highs are expected to be around 10 degrees below average at lower elevations and 15 to 20 degrees below average in the mountains at higher elevations.
“This is a sharp contrast to early last week when high temperatures were 10 to 15 degrees above average and locally 20 degrees above average,” according to an NWS advisory.
The National Weather Service forecast for Poway:
Columbus Day: Patchy fog before 11am. Otherwise, cloudy early, then clearing, with a high near 77. Light and variable wind becoming west 5 to 10 mph in the morning.
Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 58. West wind 5 to 10 mph becoming southeast after midnight.
Tuesday: Partly sunny, with a high near 75. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Tuesday night: Mostly cloudy, with a low around 58. West wind 5 to 10 mph becoming southeast in the evening.
Wednesday: Mostly cloudy, with a high near 72. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Wednesday night: A chance of showers after 11pm. Mostly cloudy, with a low around 58. Chance of precipitation is 40 percent.
Thursday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 67.
Thursday night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 56.