The Mediterranean climate of California’s coastal regions, particularly those to the north, is ideally suited to dry farming. Mornings are cool, afternoons warm, and the rains come every winter. Until the second half of the last century, dry farming was actually the norm here – and still is throughout much of Europe.
http://www.theguardian.com/environment/2016/may/05/dry-farming-california-drought-wine-crops?utm_source=esp&utm_medium=Email&utm_campaign=GU+Today+USA+-+morning+briefing+2016&utm_term=170630&subid=1495975&CMP=ema_a-morning-briefing_b-morning-briefing_c-US_d-1