A fall heat wave has overtaken San Diego this week, sending temperatures soaring into record-breaking triple digits in some communities, according to forecasters.
The National Weather Service issued an excessive heat warning for the deserts and inland valley communities, including El Cajon Poway Santee, La Mesa, San Marcos and Escondido from 10 a.m. Tuesday to 8 p.m. Thursday. On Wednesday, that weather alert was extended through Monday. A heat advisory is in effect for the mountains for the same time.
Temperatures in some areas could be in the upper 90s to low-100s during that time, particularly near the foothills.
Get top local stories in San Diego delivered to you every morning. Sign up for NBC San Diego's News Headlines newsletter.
"The heat is on away from the coastline but you can find relief from the heat if you head to the coast," NBC 7 Meteorologist Brooke Martell said.
Temperature records were broken in some areas on both Tuesday and Wednesday, the latter of which was expected to be the hottest day of the week, according to Martell. On Wednesay, Ramona, Alpine, Palomar Mountain and Campo all saw record-breaking heat for that particular day of the year.
For the weekend, a coastal eddy will develop to cool temperatures slightly.
Local
Hot temperatures and low humidity could combine to create dangerous fire conditions this week. Although, San Diego isn't expected to be affected by Santa Ana winds, which can often worsen fire weather. Humidity is expected to be 10 to 15% through the weekend with slightly better conditions on Thursday and Friday.
San Diegans can expect a warm weekend -- albeit slightly cooler than the week. Temperatures will remain 5-10 degrees above average near the coast and 15 to 20 degrees above average for the inland valleys.
Some relief could come as early as next week, although we are not likely to see fall-like weather yet.
