Saharan sand dunes have been coated in a rare dusting of snow this week, and temperatures have plunged to -2C (-28.4F) near the town of Ain Sefra, located in northeast Algeria.

This section of the Sahara has witnessed snow before, due to it being surrounded by the Atlas Mountains, but only on a handful of occasions — just five times in the last 43 years, in fact: in 1979, 2016, 2018, 2021 and now 2022.
https://electroverse.net/sahara-sees-rare-snow-thousands-stranded-on-turkish-highways-record-cold-grips-middle-east-record-snow-to-continue-in-u-s-hunga-tonga-eruption-revised-up-to-39km-128000ft/