Overview

• The National Weather Service has issued extreme heat watches for much of Oregon through Tuesday, predicting daytime highs of 90 °F to 105 °F and overnight lows in the 60s.
• Northern California’s first heat wave of the summer commenced Friday with a four-day stretch of triple-digit temperatures forecast to persist through Monday.
• San Diego County recorded new heat records Thursday, including a 116 °F high in Borrego and a 71 °F overnight low at Lake Cuyamaca, under a heat advisory lasting into Friday night.
• The San Francisco Bay Area is running 5 °F to 12 °F above seasonal norms with a moderate inland heat risk continuing through Monday as a high-pressure ridge suppresses nighttime cooling.
• Central regions in the KSNT viewing area remain under a heat advisory until Saturday evening and look to incoming weekend storms for storm-driven temperatures to dip into the 80s by midweek.