What kind of weather is there in Israel?
Israel enjoys long, warm, dry summers (April-October) and generally mild winters (November-March) with somewhat drier, cooler weather in hilly regions, such as Jerusalem and Safed. Rainfall is relatively heavy in the north and center of the country, with much less in the northern Negev and almost negligible amounts in the southern areas.
Regional conditions vary considerably, with humid summers and mild winters on the coast; dry summers and moderately cold winters in the hill regions; hot dry summers and pleasant winters in the Jordan Valley; and year-round semi-desert conditions in the Negev.
Weather extremes range from occasional winter snowfall in the mountain regions to periodic oppressively hot dry winds that send temperatures soaring, particularly in spring and autumn.
From The Israel Ministry of Tourism