05/29/2026
We first mentioned this snow chance about a week ago and surprisingly modeling has been quite persistent and it is still modeled similarly, and yes, it is going to snow in the mountains, probably as far south as Massachusetts though it might not accumulate.
We have a huge ridge of high pressure building mid-continent into the higher latitudes and something known as a Potential Vorticity Streamer that the ridge will push from the Arctic all the way down to the Northeast. These streamers are often associated with the coldest temperatures of the winter, but when they reach us in May, which is quite rare, they can also bring snow! Famously the summit of Whiteface for instance picked up 3 feet of snow in late May on the summit, but it was just cold rain at the base.
Forecasting snowfall in the spring can be difficult. My lawn for instance is currently 60F near Albany, NY and it would take heavy and persistent snow to start to stack up. There's a lot of latent heat at the surface, even at the top of the tallest mountains, but snow falling on top of snow in the Presidentials will stack up more.
Our expectation are that snow could accumulate as low as 2,000' on Saturday morning, and potentially 8" or more above 5,000' in the Whites where temperatures will fall below freezing, in fact the Powculator is currently seeing 7" at about the 5,000' mark on Mount Washington. Chances are that the auto road will be closed though and in sharky conditions probably only the snowfields on top of existing snow would be recommended. We have no guidance on avalanche risk but assume the potential exists wherever snowpack is and only experts with training should attempt such a thing. Wind will certainly create slabbing in the ravines.
The simulated radar capture is from very early Saturday morning and the snowfall map is a special version of the NAM3K snowfall map that I like to use for marginal temps. It's probably underestimating the highest elevations a bit, but we expect to see a nice coating of snow above 3,000' across parts of the ADK's, Greens, and Whites. It won't survive long either so if you are after some fast grass then Saturday at dawn is your best opportunity!