South America Daily Snow
By Luke Stone, Forecaster Posted 22 days ago July 4, 2025
Some Snow for Some Spots This Weekend
Summary
A weak storm this weekend will bring accumulating snow to the Andes, with the best chances for powder in the northern part of the central zone and the southern part of the northern zone. A sharp cutoff in snow totals will leave many areas with nothing more than some snow showers. We should dry out once again with the next chance for snow coming sometime next weekend.
Short Term Forecast
The models have remained more consistent over the last few days for the weekend storm. This storm looks a bit weak, with its focus on the central zone and the southern part of the northern zone. Snow is expected to move in on Saturday night and continue through Sunday night. This is a small closed low, so the dynamics required to produce precipitation will be over a smaller part of the Andes compared to an open trough of low pressure.
Temperatures aren't very cold with this one, with most of the cold air moving in with the closed low. Snow levels will likely bottom out around 1800 m on Sunday.
The area from Corralco north through Nevados de Chillan should do best, with 5 to 15 cm possible. Chillan could do slightly better with up to 20 cm by the time the storm wraps up. Just a dusting to 5 cm is expected for most of the northern zone and the southern zone. Below is the latest snow forecast from the European ensemble.
The storm will be mostly out of the region on Monday with a return to sunny skies and warmer temperatures. Ridging will once again return, keeping the storm track well south of the resorts through the end of the week.
Extended Forecast
The models indicate a possible return to stormy weather this weekend, with another storm early next week, but it's still early. The signal isn't overly strong, so I'm just keeping an eye on it for now.
Next post on Monday.
Thanks for reading the South America Daily Snow!
Luke Stone
Forecaster, OpenSnow
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