Weather in San Francisco is a love/hate relationship. This website might help a bit. At Weather Underground you can find current weather data from various "unofficial weather" stations around SF and the Bay Area. It seems to us to be more accurate than Weather.com or SFGate, because those sites just pull the data from one of the "official" sites, like from SFO, and they don't account for the micro-climates found in our lovely city.
Find how the weather differs from Potero Hill and the Marina. For today's news Potero Hill is 99 degrees vs. 88 in the Marina. Hello Indian summer!!
Enjoy your weekend!