Excessive Heat Warning, Chance Of Thunderstorms: Rancho Bernardo Labor Day Weekend Weather Forecast

RANCHO BERNARDO, CA – It's hot in Southern California – so hot an excessive heat warning is in effect through 10 p.m. Saturday in Rancho Bernardo. But how hot will it get Labor Day weekend?

Here's your weekend weather forecast for Rancho Bernardo, according to the National Weather Service.

Friday
Sunny, with a high near 103. East wind around 5 mph becoming calm.

Friday Night
Mostly clear, with a low around 69. Calm wind becoming southeast around 5 mph after midnight.

Saturday
Partly sunny, with a high near 97. Light southeast wind becoming east 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

Saturday Night
A 20 percent chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 74. Light east wind increasing to 5 to 10 mph in the evening.

Sunday
A 30 percent chance of showers and thunderstorms, mainly after 11am. Partly sunny, with a high near 91. East wind 10 to 20 mph, with gusts as high as 30 mph.

Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 66.

Labor Day
A 20 percent chance of showers and thunderstorms before 11am. Mostly sunny, with a high near 85.

Monday Night
Partly cloudy, with a low around 66.

What is an excessive heat warning?

An excessive heat warning means that a prolonged period of dangerously hot temperatures will occur.

Heat-related illnesses are likely due to a combination of hot temperatures and high humidity. People working or spending time outdoors, the elderly, children, and people not used to excessive heat will be most susceptible to heat-related illnesses, according to the National Weather Service.

Weather officials advised residents to drink plenty of fluids, stay in air conditioning, stay out of the sun and check in on relatives and neighbors. Officials also reminded residents to never leave kids or pets unattended in cars.