Los Angeles’ climate is warm and temperate with average temperature of 17.65 °C and annual rainfall 474 mm, while San Francisco has a dry-summer temperate climate with temperature of 14.05 °C and rainfall 600 mm, and Yosemite has a dry-summer subtropical climate, with temperature of 12.35 °C and rainfall 934 mm. The seasons in Los Angeles, San Francisco and Yosemite are as follow:
- Spring – March to May are months when the temperatures are mild and there are fewer crowds, which is perfect for walking around. Yosemite sees a transition with lower grounds in full bloom and higher grounds covered in snow.
- Summer – June to August is peak tourist season for San Francisco, Yosemite and Los Angeles. It is warm in San Francisco, Yosemite and Los Angeles, with San Francisco experiencing chilly, damp fog, Yosemite brief afternoon thunderstorms and Los Angeles heavy smog.
- Autumn – September to November are months when crowds get lesser, and Yosemite and Los Angeles get a reprieve from the summer heat. San Francisco is warmer in autumn than in summer, though it is recommended to pack a few layers as bayside breezes can get chilly.
- Winter – December to February are months when the cities get the most rainfall and experience cool weather. San Francisco may feel really chilly because of its fog and cold winds, while Yosemite experiences snow from November to April.