CLIMATE
Days are warm/hot (not humid) and nights are usually cool in the valley.
http://www.nps.gov/yose/planyourvisit/climate.htm

ATTIRE
Regular wedding attire is fine. Keep in mind that it will be warm, and you'll want to be comfortable for the 1 hr bus ride to/from the reception. You won't have to hike anywhere in heels! The bus will drop you off at The Ahwahnee, and the ceremony is just outside on the hotel's grass lawn. The reception will be indoors.
You might want to bring a wrap or layer to put on later in the evening, as temperatures can drop significantly at night. Please polish your drinking shoes! :)

THINGS TO BRING
  • Layered clothing
  • Hiking/walking shoes (if you plan to explore the valley)
  • Hat
  • Sunscreen
  • Binoculars (to watch the crazy climbers on El Capitan)
  • Camera
  • GPS or printed maps (your cell phone won't work!)