Gender is what actually gets expressed â how we look, how we act and how we feel. While sex is determined by what is written into the chromosomes or what is dictated by our biology, known as genotype, it is the interaction between the genes (genotype) and the environment that determines gender.
Here are the average temp in Yosemite Valley (where CV is located) by month: www.nps.gov/yose/planyourvisit/climate.htm. Also beginning of September is usually still quite warm. Nights can have a bit of a chill, but nothing a couple of blankets can't handle.
It is hard to predict now what the weather will be like in September. The average temperature is around 15-18Â°C. It's best to check the weather forecast a few days before you'll arrive. Apart from an umbrella or rain jacket you should pack a couple of t-shirts as well as a warm jumper.