The heat wave in the Bay Area and Northern California is lasting longer than originally forecast before cooling down.
The National Weather Service said a heat warning originally set to end at 11 p.m. Thursday was extended to 8 p.m. Friday. Areas affected by the warning include the Marin and Sonoma coastal ranges, the inland North Bay mountains, the inland East Bay hills and valleys, the Santa Clara Valley and the eastern Santa Clara Hills. The warning also included the Santa Cruz Mountains, Santa Lucia Mountains, San Benito Mountains, inland Monterey County and most of the Central Valley.
Maximum temperatures of 35 to 41 degrees are expected across the region, 10 to 25 degrees above normal. Due to low humidity, near-critical fire weather conditions are expected inland and at higher elevations, and will continue through Friday, the weather service said.
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In the coastal areas, a shallow sea layer brought scattered fog and some drizzle during the night from Thursday to Sunday and into the early morning hours. A repeat is expected on Friday.
The maximum daytime temperatures are usually between 24 and 27 degrees on the coast, between 21 and 35 degrees in the bay and 38 degrees inland. The minimum nighttime temperatures are usually above 10 degrees, and inland they can reach up to over 20 degrees.
From Saturday onwards, a clear cooling trend should begin, which will continue into next week.
