El Niño, Colorado and Utah 2026/27: The Gradient That Is Not There

Colorado and Utah come out modestly above normal in El Niño winters, and fairly uniformly. Around 120% of a typical snowpack across the region, without a meaningful north-south split once you compare like with like.

That is a smaller effect than Tahoe's and a much better one than the Cascades'. Neither the big upside nor the real downside lands here, which is what sitting on the pivot means.

And altitude is why this region is comparatively safe from the thing that actually ruins family weeks. El Niño storms arrive warm as well as wet. In a low, maritime range that means rain on the beginner slopes. At Rocky Mountain base elevations it mostly still means snow.

The counterweight: 2015-16 was a very strong El Niño and this region finished slightly below normal, at 93% to 97% depending on how you slice it.

Start with the version that looks right, because it is what the raw numbers actually say.

We took every snow station in Colorado, Utah and New Mexico with a record long enough to cover all three of the strongest El Niño winters, which is 117 of them, and grouped them by latitude. Each station is measured against its own normal, so the comparison is internal to the site.

A percentage is a ratio, and a ratio behaves badly when the number underneath it is small.

The southern stations are dry. Signal Peak in southern New Mexico has a normal peak snowpack of 3.6 inches of snow water equivalent. In 1982-83 it recorded 369% of that, which sounds spectacular and amounts to roughly thirteen inches. It is a real increase and it is not a ski destination.

So we ran the same comparison again, restricted to stations that actually hold a meaningful snowpack, which is to say stations resembling the places people ski.

That is the whole finding. Compare all stations and the north-south spread is 18 percentage points, which looks like a strong regional signal. Compare only stations that hold at least ten inches of snowpack and the spread is 2 points. Raise the bar to fifteen inches and it stays at 2.

The gradient is mostly an artefact of measuring percentage change at dry places. The southern Rockies do get a proportionally larger boost, but it lands hardest where there was least snow to begin with, which is precisely where nobody skis.

At ski-resort elevations, Colorado and Utah respond to El Niño as one region: modestly wetter than normal, in the region of 120%, from the San Juans to the Wasatch.

Real talk: we set out to confirm the north-south story and the data would not support it. We are publishing the negative result because a family choosing between Purgatory and Steamboat on the strength of an El Niño forecast is making a decision our own numbers cannot justify.

Peak snow water equivalent at the automated station nearest each resort, as a percentage of that station's own median. A dash means that station's record does not reach that winter.

Alta and Snowbird are missing, and they are the two resorts Utah is famous for. The snow stations nearest them only began recording in the last few years, so neither has a single very strong El Niño on its own record. We could borrow a number from a station over the ridge in another canyon and nobody would notice. We are not going to, because a figure from the next drainage is not that mountain's snowpack, and presenting it as one would be the most useful-looking wrong thing on this page.

Several rows rest on two winters rather than three. Park City, Brighton and Loveland all have stations that postdate 1982-83, which was the biggest of the three events almost everywhere. Their averages are therefore built on the two weaker analogues and are probably conservative.

And the sample overall is three winters. Three. Every confident El Niño claim you read this autumn, including ours, is reasoning from three data points.

Here is the part that matters more than the percentages, and it is the reason the same weather pattern produces opposite outcomes in different mountain ranges.

El Niño storms arrive warm as well as wet. What that does to your holiday depends entirely on whether the extra warmth pushes the snow line above the terrain your family skis.

In the Cascades it does. Those are low, maritime mountains whose snowpack already sits close to melting, and in the last very strong El Niño every Cascade station we checked took above-normal precipitation and most still finished with below-normal snowpack, because the water fell as rain. Tahoe has a milder version of the same exposure, with a lake at about 6,225 feet.

Colorado and Utah are simply too high and too cold for that to bite the same way. Base elevations here commonly start where Cascade summits finish. A continental snowpack at 9,000 feet in January has a lot of margin before a degree or two of warming turns snow into rain on the beginner terrain.

So the honest regional summary is: a smaller upside than the Sierra, and far less of the downside that actually wrecks a family week.

It should not change which resort you book. A two-point spread cannot justify choosing one mountain over another, and the things that do decide a family week are the same as in any winter: your children's ages, ski school quality, how far you have to travel, and what it costs.

It should not make you expect a record season. Around 120% of normal is a good winter, not a legendary one, and 2015-16 shows that a very strong event can land below normal here.

It can reasonably tip a regional choice. If you were truly torn between the Rockies and the Pacific Northwest this particular winter, the odds favour the Rockies, and that is the one decision this page supports.

And it should make you sceptical of the southern Colorado pitch. If a booking site tells you to go south this winter because of El Niño, that recommendation is not supported by the stations that measure the snow.

Our guide to El Niño and the 2026/27 ski season covers every region we serve, including why families booking the Alps should ignore this entirely. The strongest positive signal in North America is in El Niño and Tahoe, and the clearest negative, along with the rain-line problem, is in El Niño and the Pacific Northwest.