Roundhill 7-Day Snow Forecast

Roundhill Long-Range Snow Forecast Updated today

ECMWF IFS

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Updated 20 September 2026 17:42 PDT

Long-Range Snow Forecast for Roundhill

Long-range (14 to 45 days) from 21 September.

For Forecast detail, see below.

Roundhill Snow Forecast Highlights

When will there be fresh snow in Roundhill?

Roundhill Snow Forecast Highlights - ECMWF IFS
Snowfall prediction at mid-mountain (5,714ft)
Next Snow Expected	22 September
Next Snow Amount	2in
Next 48 Hours	2in
Next 7 Days	10in

Long-range Snow Outlook for Roundhill

Snowfall

Snow Line

Max 43°F
Min 20°F

10in New Snow

Snow Line from 6,650ft to resort level (4,429ft).

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Roundhill Long-Range (2 weeks+) Snow Forecast Outlook

Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.

16 Day Weather and Snow Forecast for Roundhill from OpenMeteo(ECMWF IFS)
	Snow and Weather	Temp Town
Mon 21	New Snow Clear spells at altitude, fair below. Snow Line from 6,650ft to 5,538ft, with rain below.	Max 43°F Min 39°F
Tue 22	up to 2in New Snow Light snow showers at altitude, light rain showers below. Snow Line from 5,135ft to 4,783ft, with rain below.	Max 41°F Min 28°F
Wed 23	Cloudy.	Max 35°F Min 20°F
Thu 24	Clear sky.	Max 40°F Min 24°F
Fri 25	up to 1in New Snow Light snow showers. Snow Line from 4,833ft to resort level (4,429ft).	Max 36°F Min 26°F
Sat 26	New Snow Fair. Snow Line from 4,531ft to 4,478ft, with rain below.	Max 43°F Min 27°F
Sun 27	5in to 6in New Snow Heavy snow at altitude, rain showers below. Snow Line from 4,783ft to resort level (4,429ft).	Max 36°F Min 24°F

This Snow Forecast for Roundhill, New Zealand gives the predicted Snowfall and Freezing Levels for the next week.

The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Roundhill, on any given trail or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.

Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.

Roundhill Snow Forecast updated at 17:42 PDT, next update expected imminently.

Ensemble forecast for Roundhill, New Zealand at 4,429ft

Daily Mean Temperature (yellow line is control)

Daily Total Precipitation (blue line is control)

What are Forecast Ensembles ? Multiple forecasts from running the same weather model with slightly different inputs. The prominent line (the 'control') is the model output from standard inputs, the thinner lines are the variations. Plotted together, they show a range of possible outcomes; the closer they are, the higher the confidence.

How to read Long Range Ensemble Forecasts

These forecasts are from ECMWF EC46, a long-range, low-resolution (area) model. They may not accurately reflect local conditions and should be read as area forecasts, indicating whether the coming weeks are likely to be warmer, colder, wetter, or drier than average.

What to look for?

Temperatures trending downward at the same time as precipitation spikes upward... means snow!

Lines close together indicate a high confidence, while wider spreads signal uncertainty.

Snow Forecast near Roundhill

Snow Forecasts for Ski Resorts near Roundhill
Ski Area	48 Hr	7 Day	Mo	Tu	We	Th	Fr	Sa	Su
Fox Peak	2in	9in
Mount Dobson	1in	8in

Snow Reliability

Roundhill enjoys reliable snow conditions, with typical snow depths ranging from 1 to 2 meters. Snowfall is consistent throughout the season, but it's advisable to check the latest snow information on J2Ski for up-to-date details.

Off-Piste Safety in Roundhill

Before skiing or snowboarding off-piste in Roundhill, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.