In message ,
" writes
https://www.bbc.co.uk/weather/108410
At 24.7 degrees N and presumably in a built-up area there are 2c and
3c minima forecast. Seems very cool to me for a Saudi Arabian City,
about 2000 feet asl.
A ground frost maybe? Is that where our winter has gone...……

I know that in deserts it can get very chilly at night, presumably
because clear skies, little wind and low humidity means that heat can be
rapidly radiated out into space.
--
John Hall
"If you haven't got anything nice to say about anybody, come
sit next to me."
Alice Roosevelt Longworth (1884-1980)