Roundtop 7-Day Snow Forecast

Roundtop Long-Range Snow Forecast Updated today

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Updated 18 September 2026 19:48 UTC

Long-Range Snow Forecast for Roundtop

Long-range (14 to 45 days) from 18 September.

For Forecast detail, see below.

Roundtop Snow Forecast Highlights

When will there be fresh snow in Roundtop?

Roundtop Snow Forecast Highlights - GFS
Snowfall prediction at mid-mountain (335m)
Next Snow?
There is no snow currently in the forecast for Roundtop.

Long-range Snow Outlook for Roundtop

Snowfall

Snow Line

Max 36℃ 96°F
Min 19℃ 66°F

Snow unlikely

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Roundtop 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 Roundtop from OpenMeteo(GFS)
	Snow and Weather	Temp Town
Fri 18	Clear sky.	Max 35℃ 95°F Min 21℃ 70°F
Sat 19	Clear sky.	Max 36℃ 96°F Min 24℃ 75°F
Sun 20	Clear sky.	Max 33℃ 92°F Min 21℃ 70°F
Mon 21	Clear sky.	Max 33℃ 92°F Min 20℃ 68°F
Tue 22	Light drizzle.	Max 30℃ 85°F Min 20℃ 69°F
Wed 23	Light drizzle.	Max 27℃ 81°F Min 20℃ 67°F
Thu 24	Light drizzle.	Max 27℃ 81°F Min 19℃ 66°F

No significant snowfall is forecast for this period.

This Snow Forecast for Roundtop, United States 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 Roundtop, on any given piste 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.

Roundtop Snow Forecast updated at 19:48 UTC, next update expected 01:00 UTC.

Ensemble forecast for Roundtop, USA at 240m

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 Reliability

Roundtop typically experiences consistent snowfall, with an average snow depth of around 30 inches during peak season. Snow conditions can vary, so it's recommended to check J2Ski for the latest snow reports and updates.

Off-Piste Safety in Roundtop

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