San Francisco is starting Saturday near 60 degrees, but the morning chill will disappear quickly under mostly sunny skies. Temperatures are expected to reach about 87 degrees this afternoon, making for a hot afternoon. A Heat Advisory is in effect for several interior Bay Area zones, while the bay moderates San Francisco's temperatures.
Heat Advisory Covers Interior Bay Area
The advisory runs from 11 a.m. Saturday through 10 p.m. Sunday for several interior Bay Area zones, while the bay moderates San Francisco's temperatures. San Francisco is expected to reach 85 degrees Sunday. The advisory was already noted in the weekend warmup outlined by Hoodline.
Saturday afternoon will be sunny, with temperatures peaking around 86 to 87 degrees before easing into the upper 70s by evening. Sunday will be slightly cooler but still unusually warm, with mostly cloudy skies and a high near 85.
Warm Nights Will Offer Limited Relief
Saturday night's low will be around 62 degrees. Winds will remain light for much of the day, then turn westward Saturday afternoon at up to about 10 mph.
The National Weather Service San Francisco office says the combination of hot afternoons, mild nights and weaker cooling winds will raise heat-related health risks. That means homes without effective cooling may remain uncomfortable well after sunset.
Coastal Fog Could Share The Forecast
Dense marine fog may linger near the immediate coastline early Saturday before mixing out later in the morning. Away from the shoreline, skies should turn sunny, with no rain expected across the city or nearby inland areas.
Cooler Weather Arrives Late Next Week
The heat will ease somewhat Monday, when San Francisco is forecast to reach 78 degrees, followed by highs near 78 Tuesday and 80 Wednesday. Temperatures should reach about 79 Thursday, with cooler weather later in the week, while nighttime lows gradually dip toward 60 degrees.
Heat Safety Remains Important
Residents should drink plenty of water, wear lightweight clothing and move strenuous outdoor activities to the morning or evening. The advisory also urges people to check on neighbors who may be more vulnerable to heat illness and never leave children or pets in an unattended vehicle.
