Weather Alerts For Menifee, 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 upper 60s to mid 70s. WHERE San Bernardino and Riverside County Valleys-The Inland Empire. WHEN Until 8 PM PDT Thursday. IMPACTS Heat related illnesses increase significantly during extreme heat events. ISSUED AT Monday, October 5, 2026 at 11:29 AM 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. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. # AREAS AFFECTED -------------------- San Bernardino and Riverside County Valleys, The Inland Empire Including the cities of Ontario, Moreno Valley, Riverside, Rancho Cucamonga, Corona, San Bernardino, and Fontana