This Northern Rockies snow forecast is a cold, wet late-June update focused on high-elevation snow rather than lift-served skiing. All Northern Rockies resorts are closed for lift-served skiing, but the mountains will still see a sharp pattern change with rain, gusty winds, and wet snow above the higher terrain. The best snow signal is from Sunday through Monday night in southwest Montana, where Big Sky’s upper mountain is favored for 5-8 inches, while the Tetons look lighter and most Idaho and northwest Montana ski areas stay mainly wet or showery.
Friday afternoon into Saturday brings the front and the first wave of colder, unsettled weather. The individual models converge well on a broad trough pushing showers and scattered thunderstorms through Idaho, western Montana, and northwest Wyoming, with gusty outflow winds and a much cooler feel. Snow levels start high, then trend down toward roughly 6,500-7,500 feet in central Idaho and southwest Montana late Saturday into Sunday, while the Tetons and higher southwest Montana terrain hold closer to 8,000-9,000 feet during the early part of the event.
Confidence is strongest from Friday afternoon, June 26, through early Tuesday, June 30, and that is the period used for the totals below. During that span, the models agree on the storm timing but diverge on intensity, especially around Big Sky and the Tetons. The most realistic outcome is wet high-elevation accumulation focused on southwest Montana, with Big Sky favored for 5-8 inches, Grand Targhee near 1 inch, and Jackson Hole a trace to coating. Snow-to-liquid ratios mostly run 4-9, so expect very wet to dense snow rather than soft midwinter powder, with exposed ridges seeing occasional gusts in the 30-50 mph range.
From Tuesday through next weekend, the models diverge and forecast confidence drops. The trough lingers over the West with scattered mountain showers, but most guidance backs away from organized snowfall after the early-week storm. One colder solution hints at a light northwest Montana snow chance around Friday night or Saturday, while the broader signal favors gradual warming, near-normal precipitation for Idaho and Wyoming, and a somewhat wetter bias for western Montana. Any later-period snow looks spotty and high-elevation only, so the better takeaway is continued cool, unsettled mountain weather rather than a defined second storm.
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Northern Rockies (MT/WY/ID) Snow Forecast Resort Totals (Fri Jun 26 – Tue Jun 30)
- Big Sky – 5-8 in
- Grand Targhee – 1 in
- Jackson Hole – 0 in
- Bogus Basin – 0 in
- Brundage – 0 in
- Sun Valley – 0 in
- Whitefish Mountain – 0 in
- Schweitzer – 0 in
- Tamarack – 0 in
- Bridger Bowl – 0 in