SAN DIEGO (FOX5/KUSI) -- While autumn is well underway, San Diegans know all too well that the climate in SoCal doesn't always mirror the season.

The National Weather Service (NWS) announced Monday that a heat advisory will be issued for San Diego County valleys from Tuesday, Oct. 28, at 11 a.m. through Wednesday, Oct. 29, at 7 p.m.

Temperatures are expected to reach the mid-to-high 90s in El Cajon, Escondido, La Mesa, Poway, Santee and San Marcos, according to NWS. Riverside and Moreno Valley have also been issued a heat advisory.

Health officials with the County of San Diego remind the public that extremely high temperatures can be dangerous for people and pets and can lead to stroke or even death.

Signs of overheating can include exhaustion, dizziness, nausea, confusion and headache

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