I'm local, in San Francisco. I moved here three months ago. One hour is the max that I'm willing to drive, for lessons or parties.
Oh, then you are very well situated for Tango

So, here goes:
Monday: Orange practica at The Beat, Berkeley.
I highly recommend this place. It is a public practica, not a milonga. But you can practice with a partner (don't need to bring your own, as there are always people to practice with), or just switch and dance, and have fun.
They give a lesson beforehand. Didn't do it to me, personally. Try, though, you may like it. It's more about teaching style and readiness in my case, I guess.
Tuesday. La Pista. Ney Melo's lesson. Just great. Very useful, and fun. Highly recommended. He is out of town for the rest of the year though.
Will resume in January.
The group is usually going to El Valenciano milonga afterward. Nice place to dance, but you have to be comfortable dancing in close embrace, and tight spaces.
Wednesday. Marcelo Solis' class at Vima dance studio. Not effective right now, please check back in January.
Alternative milonga at Cellspace. Very informal. Music sometimes non-tango. Dancers of all levels.
Thursday. There are milongas at Verdi club (gorgeous place, good dancers, you can dress up... not as well attended lately as before, though), and La Pista (small crowd, but very cosy, and high level of dancing).
Friday. Milongas:Club Monte Cristo. The hosts give great lesson beforehand.
Also Diamond Heights once a month. The latter is one of my favorites. A chapel on the top of the hill, beautiful place, great floor.
Intermediate followers dance a lot in both places.
Public practica at ODC. Show up if you feel like practicing, but here, the situation with partners might be iffy, as people often come with their own.
Saturday: Glenn Corteza's class at SMA. I highly recommend this teacher.
Also, milonga at aMuse gallery. Nice place. Gets very crowded at times, and if you are new, you might be waiting a while before people start asking you.
Sunday, club Gracia. Not my favorite for the number of reason, but worth trying. Lots of intermediate dancers.
Once a month -- an all-night milonga at The Beat. Great dancing for all levels, excellent floor, music, lots of fun.
Here is for starters. As you go, you will meet people, and find out about other classes and places to dance that you might like. Have fun!