I know the weather is going to be different than this muggy 95 degrees that we will have in the midwest, but just how different? We'll spend a week near Yosemite and a week in SF at Fisherman's Wharf.

How cool can I expect it to be and should we expect wind, fog and or rain in SF during the last week of July?

Ruth

The first rule of being in San Francisco is "Always have a sweater." It can be 100 degrees in the East Bay and 50 in San Francisco. It can be 50 on the beach and 80 on Market Street.

Wind, fog, and rain are all quite possible. Also sunshine and blue skies.

Take a sweater, take a poncho and good walking shoes, and some sunglasses and you'll have a great time in one of the worlds great tourist cities.

Temps in Yosemite Valley may be from the mid 80s to the mid 90s with possible thunder showers in the afernoon. Shorts, coolmax t-shirts, a wide brimmed hat and sturdy walking shoes would be good for starters. Bring sunblock and mosquito repellent.

This is a great question- I wish I would have asked before we went last year!
In Yosemite, it will be pretty warm in the day time but the temperature will drop quickly at night. For example, Glacier Point was freezing by sunset- we needed to go back to our car to get sweatshirts.
San Francisco was very cool when we were there (mid August)- I think I wore my sweatshirt every day.

the above have pretty much covered it

Yosemite will be warmer (usually) than SF during the day, and colder than SF at night. Probably no rain in SF, but heavy fog a distinct possibility. Warm days in Yosemite - but thunder showers often blow in around 4 p.m.

Layers, Layers, Layers...
Remember Mark Twains's saying, "The coldest winter I ever spent was a summer in San Francisco." SF can be delightfully warm, but most often there is a chill in the air, and when the wind kicks up, it pierces through you. So, prepare for high 60's - 70's, take a sweater and a windbreaker=type outer layer.
Prepare for very warm sun in Yosemite, with long pants, sweatshirt, and/or jacket for nighttime. And the gift shops are always willing to sell you what you need.

Thanks everyone!

elnap-that quote was never proven to be attributed to Mark Twain
http://www.snopes.com/quotes/twain.asp
(although it is so very true !)


R5

I was going to say what Elnap said. Yes, layers are your friends.