Big Snow 7-Day Snow Forecast

Big Snow Long-Range Snow Forecast Updated today

ECMWF IFS

GEM

GFS

PROSubscribe to Switch Weather Model

Updated 21 March 2026 00:41 NZDT

Long-Range Snow Forecast for Big Snow

Long-range (14 to 45 days) from 20 March.

For Forecast detail, see below.

Big Snow Snow Forecast Highlights

When will there be fresh snow in Big Snow?

Big Snow Snow Forecast Highlights - GFS
Snowfall prediction at mid-mountain (449m)
Next Snow Expected	22 March
Next Snow Amount	1cm
Next 48 Hours	1cm
Next 7 Days	4cm

Long-range Snow Outlook for Big Snow

Snowfall

Snow Line

Max 15℃
Min -13℃

4cm New Snow

Snow Line from 439m to resort level (358m).

Partner Offers

Big Snow 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 Big Snow from OpenMeteo(GFS)
	Snow and Weather	Temp Town
Fri 20	Cloudy at altitude, clear spells below.	Max 8℃ Min 2℃
Sat 21	Cloudy.	Max 15℃ Min 1℃
Sun 22	1cm New Snow Light snow. Snow falling to resort level (358m).	Max 6℃ Min -11℃
Mon 23	Cloudy.	Max 2℃ Min -13℃
Tue 24	1cm New Snow Snow showers. Snow Line from 439m to resort level (358m).	Max 4℃ Min 0℃
Wed 25	2cm New Snow Light snow showers. Snow falling to resort level (358m).	Max 6℃ Min 0℃
Thu 26	Cloudy.	Max 8℃ Min -6℃

This Snow Forecast for Big Snow, United States 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 Big Snow, on any given piste 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.

Big Snow Snow Forecast updated at 00:41 NZDT, next update expected imminently.

Ensemble forecast for Big Snow, USA at 358m

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.

United States Hotels Map

Snow Forecast near Big Snow

Snow Forecasts for Ski Resorts near Big Snow
Ski Area	48 Hr	7 Day
Big Powderhorn Mountain	1cm	4cm
Blackjack	1cm	4cm
Indianhead	1cm	4cm

Snow Reliability

Big Snow typically enjoys reliable snow conditions with an average depth of 150 inches during the season. For the latest snow information, be sure to check J2Ski.

Off-Piste Safety in Big Snow

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