Right now is late Auttum. Crappy overcast days with 1 to 5 celcius lows and
15 to 20 celcius highs (with the occasional cold day when it does not go over 12).Winter is july/august and its a bit colder. It has been a very dry year with almost no rain so far. It normally rains 50 to 60 days a year, mostly april to july.
Spring starts late september and is a slightly warmer auttum with a cold sun that does not give too much heat.
Summer is long and dry, from november to late february. Lows are always in the low teens and highs in the low thirties. 34 was this years max somewhere in January...
No snow in Santiago. It does snow farther south. Its VERY wet in the middle, and much dries up north. Chile is 3000 miles long, so we have a lot of different weather.
And to be on topic: an hydropneumatic Citroen is a godsend in winter. This city has a nonexistant draining system, so being able to raise the car has gotten me out of a lot of trouble :)