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Alta Snow Forecast - 18th May 2026

Alta Snow Report and Forecast

ECMWF IFS
GEM
GFS

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Updated 19 May 2026 03:42 AEST

Snow Forecast for Alta

Snow and Weather from 18 May.

For Forecast detail, see below.

Alta Snow Forecast Highlights

When will there be fresh snow in Alta?

Alta Snow Forecast Highlights - GFS
Snowfall prediction at mid-mountain (2,987m)
Next Snow Expected18 May
Next Snow Amount15cm
Next 48 Hours15cm
Next 7 Days15cm

Forecast for today in Alta

Max 1℃
Min -4℃

Valley temperatures from an overnight low of -4℃ to daytime highs around 1℃

Temperature at BaseTemp at Base

 
Snowfall

 
Snow Line

Mon
18

12cm to 13cm New Snow

SnowSnowHvy SnowCloud

Heavy snow showers, heavy snow, cloudy later.

Snow falling to resort level (2,600m).

Forecast times for Alta are in Denver (US/Mountain) time zone.

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Alta 7-Day Snow Forecast Overview

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Summary Weather and Snow Forecast for Alta from OpenMeteo(GFS)
Mon
18
Tue
19
Wed
20
Thu
21
Fri
22
Sat
23
Sun
24
WindS F4SE F2SW F2
3,374m
-5℃
Snow
+13cm
-2℃
Clear
4℃
Cloud
2℃
Lt Snow Shwrs
6℃
Cloud
11℃
Mixed
13℃
Clear
SE F4SW F2
2,987m
-3℃
Hvy Snow
+15cm
1℃
Clear
7℃
Cloud
5℃
Mixed
8℃
Cloud
13℃
Mixed
16℃
Clear
S F3SW F2
2,600m
1℃
Hvy Snow
+12cm
6℃
Clear
9℃
Cloud
7℃
Mixed
11℃
Cloud
16℃
Mixed
18℃
Clear
Snow Line

2,600m

varying 3,119m
to 2,909m

Max Town1℃6℃9℃7℃11℃16℃18℃
Min Town-4℃-2℃-1℃1℃0℃4℃7℃

This table shows the average forecast snowfall, the maximum temperature, and expected general weather at resort, lower and upper mountain levels. For daily forecast details, see below.

Snow Forecast near Alta

Snow Forecasts for Ski Resorts near Alta
Ski Area 48 Hr 7 DayMoTuWeThFrSaSu
Park City19cm 19cm
Deer Valley Resort18cm 18cm
Brighton (Utah)15cm 15cm
Solitude15cm 15cm
Sundance2cm 2cm

Snow Reliability

Alta is known for its impressive snow reliability, with typical snow depths ranging from 100 to 300 inches. For the latest snow conditions, visit J2Ski for up-to-date information.

Understanding and predicting Snow Conditions in Alta

Here are our tips for making the most of a trip to Alta, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Alta, but like any mountain, snow conditions change throughout the season, from day to day, and even from hour to hour.

Whether you’re sticking to the marked pistes or venturing off-piste, here’s what you need to know:

Pistes (Groomers) or Off-Piste

These can be a world apart, regarding snow conditions, even ignoring the difference between the natural terrain features to be found off-piste and the generally controlled surfaces and slopes of a pisted (groomed) run.

  • Piste Conditions can range from fresh powder to firm, icy surfaces, particularly after warm spells or a busy day on the mountain with the passage of many skiers.
  • Off-Piste Conditions are far more variable. Wind and sun can quickly transform fresh snow into wind crust or slushy layers, whilst cold weather can preserve stashes of powder many days after a snowfall.

WARNING - skiing off-piste (out-of-bounds) at Alta is not always controlled (slopes made safe from avalanche risk) or patrolled. Always check local advice, ski with safety kit (and know how to use it), and never ski alone.

Analyzing Weather and Snowfall Forecasts

Whilst no forecast can tell you exactly how snow conditions in Alta will develop, checking the forecast regularly should give you an idea of what to expect.

New snowfall can bring fresh powder and refresh the surfaces of pisted runs. Powder can be tracked out quickly at busy times, but in less crowded and shaded areas, fresh snow can linger for days.

Changes in weather conditions, such as milder temperatures, rain or wind, can degrade snow quality. Conversely, cold, stable weather can preserve conditions for extended periods.

Predicting Future Snow Quality

Regularly check our snow and weather forecasts for Alta for changes that may affect snow quality. Forecast snowfall depth and recent snowfall are good indicators of what to expect.

Use historical data and recent snow reports to understand past snow conditions and anticipate future changes.