Reading the forecast before a ski day

Snowfall totals get the attention, but they are rarely what decides a ski day. What matters is where the temperature sits relative to freezing, how much wind is on the exposed lifts, and whether there is enough contrast to see the surface.

The quick answer

• Watch the temperature curve near zero, then check the precipitation type. Surface temperature alone does not decide rain versus snow; the layers of air above you matter too.
• Check wind and the resort’s lift status. Exposed lifts may be affected; operating limits are specific to the lift and resort.
• Cloud decides visibility, and flat light is the thing that ruins a day people remember. Thick cloud on a fresh surface removes contrast entirely.
• A clear, cold night after a warm day means a hard morning. The surface refreezes; the good hour is later than you think.
• In Weathergraph the temperature curve and precipitation sit on the same chart, so the crossing point is visible rather than calculated, and the wind line with gust arrows runs alongside it.

Surface temperature is one part of the story

Where the curve sits	What falls, and what the surface does
Below 0 °C	A cold surface does not rule out rain that freezes on contact; check the forecast precipitation type.
Hovering around 0 °C	The unreliable case — wet snow, sleet, or rain a few hundred metres lower.
Above 0 °C with precipitation	Rain or wet snow may occur; the vertical temperature profile matters.
Above 0 °C by day, below by night	Spring conditions: slush in the afternoon, boilerplate at first lift.

Remember that the forecast point is usually the valley or the resort base. Higher terrain is often colder, but inversions and changing lapse rates mean a fixed subtraction is unreliable. Use an elevation-specific forecast. The NWS explains temperature change with height, and its winter precipitation explanation shows why the air above the surface matters. That gap is exactly why a total snowfall figure for "the resort" tells you so little.

Wind, and why the lifts stop

Wind matters twice on a ski day. It closes exposed lifts, and it moves snow around after it falls, stripping windward slopes and loading lee ones. The number to read is the gust rather than the average — our guide on gusts versus average wind explains why the gap between them is the useful signal. On the hill itself, the feels-like temperature on a fast, exposed chairlift can be lower in cold, windy conditions. The NWS wind-chill explanation describes heat loss from exposed skin; it is not a measure of snow-surface conditions.

Timing the day

1. Find the precipitation window and see which side of zero it falls on.
2. Check the wind through the morning — that is when lift decisions get made.
3. Look for the break in the cloud strip if you care about light more than fresh snow.
4. Read overnight temperature to know what the surface will be at first lift.

What this is not

This is a guide to reading a general forecast for a ski day, and it stops where the snowpack begins. Avalanche danger is assessed by regional avalanche warning services using observations no consumer forecast contains, and nothing on a weather timeline substitutes for the local bulletin before going off-piste or touring. Read the bulletin first; use the forecast to choose the day.

Sources and what changed

• NWS: winter precipitation types explains how different layers of air affect what reaches the ground.
• NWS: avalanche safety directs readers to regional avalanche centres for current snowpack assessments.
• Checked 20 October 2026: corrected the implication that a surface crossing of 0 °C identifies precipitation type, removed a fixed altitude correction, and separated lift operation from a general weather forecast.