Cerro Castor 7-Day Snow Forecast

Cerro Castor Long-Range Snow Forecast Updated today

ECMWF IFS

GEM

GFS

PROSubscribe to Switch Weather Model

Updated 20 March 2026 16:40 PDT

Long-Range Snow Forecast for Cerro Castor

Long-range (14 to 45 days) from 21 March.

For Forecast detail, see below.

Cerro Castor Snow Forecast Highlights

When will there be fresh snow in Cerro Castor?

Cerro Castor Snow Forecast Highlights - GFS
Snowfall prediction at mid-mountain (1,919ft)
Next Snow Expected	25 March
Next Snow Amount	1in
Next 48 Hours	-
Next 7 Days	2in

Long-range Snow Outlook for Cerro Castor

Snowfall

Snow Line

Max 49°F
Min 28°F

3in New Snow

Snow Line from 3,146ft to resort level (640ft).

Partner Offers

Cerro Castor Long-Range (2 weeks+) Snow Forecast Outlook

Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.

16 Day Weather and Snow Forecast for Cerro Castor from OpenMeteo(GFS)
	Snow and Weather	Temp Town
Sat 21	New Snow Snow at altitude, rain below. Snow Line from 1,243ft to 653ft, with rain below.	Max 47°F Min 35°F
Sun 22	Clear spells.	Max 49°F Min 31°F
Mon 23	Cloudy.	Max 46°F Min 36°F
Tue 24	up to 1in New Snow Light snow at altitude, light drizzle below. Snow Line from 1,834ft to 1,211ft, with rain below.	Max 44°F Min 35°F
Wed 25	up to 1in New Snow Snow showers at altitude, light rain showers below. Snow Line from 1,867ft to resort level (640ft).	Max 41°F Min 29°F
Thu 26	New Snow Light snow showers. Snow Line from 2,490ft to resort level (640ft).	Max 41°F Min 28°F
Fri 27	New Snow Clear spells. Snow Line from 3,146ft to 1,670ft, with rain below.	Max 42°F Min 31°F

This Snow Forecast for Cerro Castor, Argentina gives the predicted Snowfall and Freezing Levels for the next week.

The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Cerro Castor, on any given trail or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.

Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.

Cerro Castor Snow Forecast updated at 16:40 PDT, next update expected 22:00 PDT.

Ensemble forecast for Cerro Castor, Argentina at 640ft

Daily Mean Temperature (yellow line is control)

Daily Total Precipitation (blue line is control)

What are Forecast Ensembles ? Multiple forecasts from running the same weather model with slightly different inputs. The prominent line (the 'control') is the model output from standard inputs, the thinner lines are the variations. Plotted together, they show a range of possible outcomes; the closer they are, the higher the confidence.

How to read Long Range Ensemble Forecasts

These forecasts are from ECMWF EC46, a long-range, low-resolution (area) model. They may not accurately reflect local conditions and should be read as area forecasts, indicating whether the coming weeks are likely to be warmer, colder, wetter, or drier than average.

What to look for?

Temperatures trending downward at the same time as precipitation spikes upward... means snow!

Lines close together indicate a high confidence, while wider spreads signal uncertainty.

Snow Reliability

Cerro Castor typically enjoys a snow depth of 50-100 cm, with reliable snowfall from June to October. For the latest snow conditions, check J2Ski for up-to-date information.

Off-Piste Safety in Cerro Castor

Before skiing or snowboarding off-piste in Cerro Castor, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.