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Climate
From June through August, midday temperatures in the desert can soar to 50 C (122 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.
The shamal, sand-laden winds from the northern deserts, is most frequent in early summer and can blow for days at 25-30 miles an hour. 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.