Blacktail Mountain 7-Day Snow Forecast

Blacktail Mountain Long-Range Snow Forecast Updated today

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Updated 18 May 2026 10:47 PDT

Long-Range Snow Forecast for Blacktail Mountain

Long-range (14 to 45 days) from 18 May.

For Forecast detail, see below.

Blacktail Mountain Snow Forecast Highlights

When will there be fresh snow in Blacktail Mountain?

Blacktail Mountain Snow Forecast Highlights - GFS
Snowfall prediction at mid-mountain (5,956ft)
Next Snow?
There is no snow currently in the forecast for Blacktail Mountain.

Long-range Snow Outlook for Blacktail Mountain

Snowfall

Snow Line

Max 80°F
Min 36°F

New Snow

Snow Line from 5,804ft to 5,443ft, with rain below.

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Blacktail Mountain 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 Blacktail Mountain from OpenMeteo(GFS)
	Snow and Weather	Temp Town
Mon 18	Clear spells at altitude, cloudy below.	Max 46°F Min 39°F
Tue 19	New Snow Light snow showers at altitude, light rain showers below. Snow Line from 5,804ft to 5,443ft, with rain below.	Max 47°F Min 36°F
Wed 20	Rain showers.	Max 59°F Min 42°F
Thu 21	Clear sky.	Max 66°F Min 45°F
Fri 22	Cloudy.	Max 68°F Min 45°F
Sat 23	Fair.	Max 72°F Min 47°F
Sun 24	Clear sky.	Max 80°F Min 53°F

This Snow Forecast for Blacktail Mountain, 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 Blacktail Mountain, 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.

Blacktail Mountain Snow Forecast updated at 10:47 PDT, next update expected 16:00 PDT.

Ensemble forecast for Blacktail Mountain, USA at 5,236ft

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

Blacktail Mountain typically enjoys reliable snow conditions, with an average snowfall of around 250 inches each season. For the latest snow depth and conditions, visit J2Ski for up-to-date information.

Off-Piste Safety in Blacktail Mountain

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