Hot stretch continues
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The Bay Area October hot stretch continues.  A Heat Advisory is in effect for most of the Bay Area until 10 pm Wednesday. Projected highs for Monday range from the mid 70s near the coast to 102 well inland.

Another sizzling, Spare the Air Alert day
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Happy Sunday Everyone! Another Spare the Air Day with a Heat Advisory that now covers the entire Bay Area including the coast through 10 PM Sunday. The Heat Advisory away from the coast continues until Wednesday. Afternoon highs will run 10–20° above normal during our hot spell, ranging from upper 70s at the coast to low 100s inland.  With hot afternoons and weak onshore flow overnight cooling will be limited.  The hot, dry conditions also continue the elevated fire-weather concerns. On Thursday the heat begins to ease with additional cooling Friday and Saturday. 

The heat has staying power
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Spare the Air: The Heat Advisory has been extended through 10:00 PM Wednesday for most of the Bay Area. Those excluded are:  Coastal Sections (SF, Coastal Marin, Monterey Bay beaches): The heat advisory for those areas is active from 11:00 AM Saturday through 10:00 PM Sunday. Meanwhile: Inland Bay Area & Central Coast (Concord, Livermore, San Jose, Valleys): The advisory has been extended and 11:00 AM Saturday straight through 10:00 PM Wednesday. Temperatures (Monday - Wednesday) Coast: 65°F to 72°F. Fog up to the beaches, then retreats. The Bay: 80°F to 90°F. Clear, unseasonably warm, and hazy. Inland Areas: 95°F to 102°F. Intense triple-digit heat will hold firm. Eat Bay and South Bay (Gilroy) and inland valley locations will hover near 100°F for most of the workweek.  The Spare the Air Alert remains active through Sunday night, possibly extended midweek heat window. 49er Game: 97 degrees and filtered sunshine. (Clouds and sun mix). Record high temp is 98 degrees set in 2024. Go 9ers

Autumn hot spell
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Happy Saturday Everyone! Hot and hazy today with a SPARE THE AIR in place and highs 10–20° above average. A HEAT ADVISORY is in effect until Monday 10 PM for all areas away from the coast where a compressed marine layer will produce patchy dense fog and comfortable temps. Higher elevations will remain hot and dry, with elevated fire-weather concerns continuing through Thursday. Friday, the ridge is finally expected to weaken, bringing the potential for cooler conditions. 

The heat has staying power
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Low stratus clouds near San Francisco after midnight, becoming most dense around the Monterey Bay and Central Coast line. Localized dense, blinding fog is possible on coastal routes before sunrise. Inland valleys and coast will cool into the comfortable 50s to low 60s. Heat Advisory: Officially into effect at 11:00 AM Saturday through Monday night for the majority of the Bay Area. Widespread Moderate Heat Risk with distinct pockets of Major Heat Risk will dominate the inland areas. Microclimate Highs: Coast: 68°F to 75°F. Morning beach stratus will be short-lived.  Bayshore Shoreline: 80°F to 92°F. Inland Valleys: 95°F to 103°F. Onshore sea breezes will be light, with localized afternoon gusts reaching just 20 to 25 mph through the most wind-prone gaps and the northern Salinas Valley. These light winds are a primary driver for the active SPARE THE AIR pollution trapping through Sunday.

Heat advisories this weekend
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A massive high-pressure dome is compressing the coastal marine layer, locking Northern California into a prolonged, unseasonably hot autumn weather pattern.

Summerlike pattern in October
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Looks like summer out there!  Dense fog will be a factor Thursday morning.  The clouds will clear back to near the shoreline.  Highs should range from the upper 60s to the mid 90s.  A Coastal Flood Advisory, due to high tide, is in effect until 5 pm Thursday. Plan on warmer temperatures this weekend.  The hottest areas will hit the upper 90s.

Heightened concern over Bay Area 'Kelvin' waves, impact on sea level
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Kelvin waves travel underwater and tend to occur during El Niño weather conditions. Chief Meteorologist Mark Tamayo explains how incoming 'Kelvin' waves may impact the Bay Area's coastline this winter.

Endless Summer
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Tonight: While inland valleys and bayside communities will remain completely clear overnight, immediate coastal routes could see sudden visibility drops due to localized dense coastal fog before sunrise.  A multi-day Coastal Flood Advisory remains active due to high astronomical summer tidal swings. Wednesday high tide is at 2:10 PM.  Immediate Pacific Coast: 65°F to 72°F...Bayshore Shoreline (Oakland/Downtown SF/San Jose): 75°F to 85°F...Interior Valleys (East Bay/Far Interior): 85°F to 95°F.  West-northwest, sustained at 10 to 20 mph with peak gusts hitting 25 to 30 mph.  Please remember to hydrate. Also, with offshore winds and low relative humidity, fire danger remains HIGH.

Warming continues
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The Bay Area warming trend continues!  Your Tuesday forecast features mostly sunny skies and warm to hot temperatures.  Highs should range from the upper 60s to the mid 90s.

Another cool day ahead
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Fall-like conditions today with temps in the 60s.

Warming up again
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Patchy low clouds return Monday morning.  The afternoon forecast features mostly sunny skies and warmer temperatures.  Highs should range from the mid 60s to the mid 8i0s.

Cooler today, Warming next week
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Our cooling trend continues today, with afternoon highs running 5 to 15 degrees below normal. A mostly cloudy, patchy-drizzly start will give way to partly cloudy skies this afternoon, with temperatures ranging from the low 60s at the coast to the mid 70s inland. A warmer pattern returns Monday, with hotter inland temperatures developing. By Tuesday, inland highs could reach the low 90s.

Cooling trend continues
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The Bay Area cooling trend continues.  Sunday's highs should range from the low 60s to mid 70s.  Temps rebound later in the week.

Cooler weekend ahead
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Happy Saturday! Partly cloudy skies today as cooler air continues to spread inland this weekend, Saturday will be pleasantly cool, with highs mainly in the 60s and 70s, Sunday will bring additional cooling with well below average temps. for late September. A warm-up begins on Monday and by Tuesday, inland temperatures are climbing back into the 80s and lower 90s. Dry conditions are expected through late next week.

Cooling trend
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Your Friday forecast features partly sunny skies and cooler temperatures.  Highs should range from the mid 60s to the mid 80s. Wind gusts could exceed 30 mph.