Weather Alerts For Rancho Bernardo, CA

# HEADLINE -------------------- EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY # DETAILS -------------------- WHAT Dangerously hot conditions with high temperatures in the upper 90s to 105. Nights will be very warm with low temperatures in the mid 60s to low 70s. WHERE San Diego County Valleys. WHEN Until 8 PM PDT Thursday. IMPACTS Heat related illnesses increase significantly during extreme heat events. ISSUED AT Tuesday, October 6, 2026 at 3:38 PM PDT ISSUED BY National Weather Service San Diego CA HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. # AREAS AFFECTED -------------------- San Diego County Valleys Including the cities of El Cajon, San Marcos, Poway, La Mesa, Santee, and Escondido