Forbes Magazine rated Marin County Education #1 in the United States as the best bang for your buck and
highest graduation rate. In addition, many Marin County cities/communities have convenient commutes to the City, great schools and culture.
What a great community in Mill Valley, backed up by the fact that it was rated in the top 10 places to live by 2005 CNN/Money.com. The commute is very convenient to the city without having to deal with the Bay Bridge commute and 80/880 traffic. There is also transit and the ferry from the Larkspur Ferry terminal.
Depending on what you are looking for in weather, the farther north you go the warmer it gets with less fog.
In addition, each community has it's own micro climate.
In regards to comfort in Marin, I know many Asian American families that are very comfortable and love Marin County and Mill Valley.