Eli5: why/how is Palm Springs, CA 115 degrees F today, and San Diego, CA (100 SW south of PS) is 75 degrees today?

Question

What makes Palm Springs so hot, essentially?

Edit: 100 miles*

In: 0

Answer 1

The mountains, more or less. San Diego is on the coast, which has much milder weather; Palm Springs is just on the edge of the Sonoran Desert.

The mountains stop the moisture and rain from the coast from reaching the desert. Drier air gets hotter.