Complex sentence: The Pajaro Valley has a climate that is usually pleasant year round, about 60 to 70 degrees throughout the year which makes Watsonville an attractive coastal environment for the neighboring inland communities which host very hot summers.
Split into simpler sentences: The Pajaro Valley has a climate that is usually pleasant-around 60 to 70 degrees Fahrenheit-year round. This climate makes Watsonville an attractive coastal environment for the neighboring inland communities with very hot summers.