Yeah. I mean, I'm from Alaska and I was still chilly in SF during the evening.

I always carry a change of clothes - shorts are very acceptable.

In First, shorts might be fine.

For me, in coach I always wear long pant and long sleeves. But not for temperature reason. It's just that when it's a packed flight and passengers are squeezed together, I'd rather not have my bare arms or legs touch another passengers hairy bare arms and legs.

Those extra millimeters of cloth are important to my illusion of personal space.

But that's probably just me.

Cromely.

Shorts On a Plane. Move to AUS if you want to be accepted. ^

There is a safety concern about light clothing on a plane.

I recall reading that most people die in air crashes due to fire. Hence it is recommended that you wear long sleeves and trousers that are made from natural fibres.

How about using long pants with zipoff and make it a short when you need and make long pant where you don't want to wear shots.

I find it too cold on the plane to be wearing shorts. In all actuality, there has been many times I'd love to have slipped into my flannel pajamas.

It really depends on how nice your legs are

I think the only time I've worn shorts on a plane have been when I've been flying from somewhere where it wasn't practical to wear long trousers to the airport due to heat.

gotta agree about SFO. Be forewarned, it is usually NOT warm in SFO this time of year. The fog clears late and then comes back in early, and the swift breezes whipping through the city will chill you to the bone. The East bay is a different story...

When you arrive to SFO will you drive 30 minutes south to Sunnyvale or 15 minutes North to the City? SFO is in South San Francisco and is usually nice. Sunnyvale can be uncomfortably hot in the summer on some days. The city itself (SF) is usually nice but can be cooler when the fog rolls in.

There's a famous quote: "The coldest winter I ever saw was the summer I spent in San Francisco.--Mark Twain"

The quote doesn't reveal everything about the Bay Area which has an amazing variety (21?!) of micro-climates. Drive up into the hills onto dirt roads above Los Gatos at 11:00 am on a hot summer day and you can move from sweaty hot bright sun of Sunnyvale to cool misty forests with condensation dripping onto your windshield from the dark towering forest. Back down the hill at 2:00 and you're hot again. Amazing!

Enjoy your trip!

The first time I went to San Fran, the first day I was there was glorious, the temperature was in the low 80s, sunny. I wondered why everyone complained about summer weather there. The next morning the headlines read that San Fran had set a high temperature record not just for the day but for the month. A few days later I was at Macy's trying to buy wool sweaters, pants and socks. This was in July.

i'm at the AC at DFW in shorts and riding up front.. no problem here

I always get cold and only feel warm if the AC is not on at the gate for some reason. My flying uniform is jeans and a t-shirt with a poly-cotton zip-up jacket.

I try to wear shorts whenever the departure or arrival city does not have freezing temperatures.

My wife on the other hand always bundles up as she can never seem to stay warm on planes.