Snow Falls in the Sahara Desert – a Rare Occurrence for the Region (2 photos + 2 videos)
This has happened only a few times in the last half century. 
Snow fell on the northern edge of the Sahara Desert—the seventh time in the last 40 years. In the Algerian city of Ain Sefra, temperatures dropped below freezing.
Before 2016, the last time snow fell in Ain Sefra was in 1979. But over the past 10 years, the sand dunes have increasingly changed color from orange to white. This is the seventh time in four decades that this has happened.
The Sahara is the world's largest desert, covering almost 9 million square kilometers and most of North Africa. In addition to being one of the driest places on the planet, it is also one of the hottest, with temperatures reaching over 50°C. The desert spans 11 countries, including Egypt, Algeria, Libya, and Morocco.
Interesting fact: several thousand years ago, the Sahara was a humid region with forests, rivers, and rich fauna, as evidenced by rock paintings. Now, the sand layer in the dunes averages 20-50 meters, but in some places can reach a record 300 meters.
