I think high will be closer to 100. We are already getting back into the mid 80s next week and climate is usually about the same here just little less humid than SF. I hope to be wrong but either way, looking forward to it.My guess is a high of 85-90 for SF in April.
Luckily man has been around longer than 4 weeks to put together some data beyond what you just tried to describe.Look at the Almanac for that. Averages are not actual/ If it is 40 the first 2 weeks and 100 the second 2 weeks, that says the average is 70. And that doesn't answer what you need, does it?
(for Bro's eyes)Again, those are averages. I have been there is April and it was raining and almost snowing. I would wait a little before you gather your weather stuff. They said in January that Texas was going to be well above average temps for February. Reality is, 3 days to a week is when you want to start looking at the local weather to see what it should be like.