Summer to Fall in 24 Hours

Another dramatic temperature drop occurred this week.

The first temperature you see is the high for monday.  High pressure brought sunshine and a slight land-breeze Monday.  This held the ocean cooled air offshore, stopping our free air conditioning.  A warmer than average afternoon greeted the unofficial end to summer.

The second temperature is Tuesday's high.  The high pressure moved east and lost its grip on our air currents.  Fall made a grand entrance as the sea breeze returned and spread the cooler ocean air over all of our neighborhoods. 

The last temperature is my forecasted high for today.  A cold front blasted through the Bay Area and Coast this morning.  It left measurable drizzle in Downtown San Francisco, 0.06".  Behind the cold front we have more clouds and the coolest air this week. 

The numbers in parenthesis are the difference between the high Monday and Tuesday and again for Tuesday and today.  The last temperature is the total temperature change from Monday to Today.
   
NORTH BAY:
89° - 79° - 71°  (-10, -8 = -18°)  Clear Lake 
95° - 83° - 73°  (-12, -10° = -22°)  Cloverdale
92° - 70° - 70°  (-18, -0 = -18°)  Napa 
93° - 75° - 70°  (-18, -5 = -23°)  Novato
91° - 70° - 67°  (-19, -3 = -22°)  San Rafael
93° - 80° - 71°  (-13, -9 = -22°)  Santa Rosa 

EAST BAY VALLEYS: 
95° - 82° - 72°  (-13, -10 = -23°)  Antioch 
95° - 72° - 70°  (-23, -2 = -25°)  Concord
94° - 69° - 68°  (-25, -1 = -26°)  Danville
94° - 76° - 72°  (-18, -4 = -22°)  Fairfield
95° - 76° - 68°  (-19, -8 = -27°)  Livermore 
93° - 72° - 69°  (-19, -3 = -22°)  Walnut Creek 

EAST BAY:
89° - 71° - 67°  (-18, -4 = -22°)  Fremont
86° - 63° - 63°  (-23, -0 = -23°)  Oakland 
79° - 64° - 63°  (-15, -1 = -16°)  Richmond 
 
84° - 60° - 61°  (-24, +1 = -23°)  San Francisco

COAST:
64° - 59° - 58°  (-5, -1 = -6°)  Half Moon Bay
63° - 58° - 56°  (-5, -2 = -7°)  Pacifica  

PENINSULA:
92° - 74° - 67°  (-18, -7 = -25°)  Redwood City

SOUTH BAY:
93° - 77° - 68°  (-16, -9 = -25°)  Los Gatos 
90° - 76° - 67°  (-14, -9 = -23°)  Moffett Field
93° - 76° - 68°  (-17, -8 = -25°)  San Jose

SANTA CLARA VALLEY:
93 - 70 - 67  (-23, -3 = -26°)  Gilroy: 
90 - 66 - 66  (-24, -0 = -24°)  Hollister: 
96 - 75 - 69  (-19, -6 = -25°)  Morgan Hill: 

MONTEREY BAY:
76 - 62 - 62  (-14, -0 = -14°)  Monterey 
73 - 65 - 63  (-8, -2 = -10°)  Santa Cruz: 
80 - 62 - 64  (-18, +2 = -16°)  Watsonville 

SALINAS VALLEY:
77 - 65 - 65  (-12, -0, -12°)  Salinas