The summer has been so cold out here in coastal California that I’ve been hibernating with all the grapes that are going to hit maybe 12.% alcohol this year. Or something like that.
Driving up the coast last week (end of July), Ventura to San Francisco, via my car’s outside temperature display:
Ventura, 10am, 67 degrees (fog)
Santa Barbara, 10.45am, 66 degrees (sun and fog)
Top of San Marcos Pass, 11.15am, 71 degrees (sunny)
Santa Maria Valley, within site of the Bien Nacido vineyard, 12.15pm, 63 degrees (fog, some sun)
Pismo Beach, 12.35pm, 66 degrees (fog)
San Luis Obispo, 12.55pm, 70 degrees (clearing fog, sun)
Paso Robles, 1.30pm, 89 degrees (sun)
San Miguel area, 1.45pm, 91 degrees (sun)
Gonzales (roughly Santa Lucia Highlands, Chalone), 2.35pm, 68 degrees (fog-sun)
Salinas, 3pm, 65 degrees (fog, wind)
Morgan Hill, 4.15pm, 71 degrees (sun, patchy clouds, bullshit traffic)
Cupertino (below Monte Bello), 5pm, 69 degrees (sun, fog to the north)
San Francisco, 5.55pm, 52 degrees (fog, wind, mist)
Summer 2010 on the California coast.
spume 
Leave it to Paso to still hit 90, though I suppose 103 might be more the norm.
Welcome back!
I read your post with intresest, as we visited San Francisco for the first time the second week of July, coming from NYC. The first night we arrived I bought a pair of Uggs to replace the flip flops I had been wearing since May in NYC. So cold. Sausalito was warm–got unexpectedly sunburned and Napa Valley was in the 80’s. Every day the week we were in San Francisco around 4-5 pm the sun would go behind the clouds and the wind kicked up and any warmth was gone. Such different weather from where I came from!