From June through
August, midday temperature in the desert can soar to over
100 F. Humidity in the coastal regions may approach 100
percent at times. In contrast, weather in other areas of the
country may be mild throughout the year. Winter temperatures
in the northern and central regions may drop to below
freezing. Rainfall ranges from none at all for up to 10
years in the Rub- Al-Khali, to 20 inches a year in the
mountains of Asir Province.