SAN DIEGO - Another round of extreme heat in inland San Diego County Monday will combine with gusty wind and low humidity to increase the risk of wildfires.
A National Weather Service excessive heat warning for the deserts and less severe heat advisories for the valleys and mountains will remain in effect until 9 p.m. A red flag warning for mountain areas below 5,000 feet and the deserts will extend from 1 p.m. Monday until 1 a.m. Wednesday.
"The combination of strong gusty winds and low humidities will bring critical fire weather conditions for the desert slopes of the mountains into adjacent deserts," according to the weather service.
On Sunday, a high of 108 degrees in Campo topped by two degrees a previous record for the date, set in 1990, according to the NWS. It was also one degree above the prior high mark for the month of June, set in 1994.
Predicted high temperatures Monday are 75 to 80 degrees at the beaches, 88 to 93 degrees in inland coastal areas, 93 to 98 degrees in the western valleys, 98 to 103 degrees near the foothills, 91 to 100 degrees in the mountains and 114 to 119 degrees in the deserts.
Somewhat cooler conditions are expected Tuesday, with temperatures lowering to 69 to 74 degrees at the beaches, 77 to 82 degrees in inland coastal areas, 81 to 86 degrees in the western valleys, 88 to 93 degrees near the foothills, 84 to 93 degrees in the mountains and around 110 degrees in the deserts. Further cooling is expected Wednesday.
"Cooling will begin to spread inland on Tuesday with near average high temperatures returning on Wednesday and continuing into next weekend with minor day to day differences," according to the weather service.
The hot weather will increase the risk of heat-related illness and anyone working or spending time outdoors would be more susceptible, as will the elderly, children and those unaccustomed to the heat. Forecasters advised residents to reschedule strenuous activities to early morning or evening, drink plenty of water, wear lightweight and loose fitting clothing and be aware of the signs and symptoms of heat exhaustion and heat stroke.
Authorities have also warned against leaving children, seniors or pets in parked cars, which can heat up to lethal levels in just minutes, even with a window partially open.