Shiga Ichinose Diamond 7-Day Snow Forecast

Shiga Ichinose Diamond Long-Range Snow Forecast Updated today

ECMWF IFS

GFS

JMA

PROSubscribe to Switch Weather Model

Updated 21 September 2026 13:40 AEST

Long-Range Snow Forecast for Shiga Ichinose Diamond

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

For Forecast detail, see below.

Shiga Ichinose Diamond Snow Forecast Highlights

When will there be fresh snow in Shiga Ichinose Diamond?

Shiga Ichinose Diamond Snow Forecast Highlights - JMA
Snowfall prediction at mid-mountain (1,655m)
Next Snow?
There is no snow currently in the forecast for Shiga Ichinose Diamond.

Long-range Snow Outlook for Shiga Ichinose Diamond

Snowfall

Snow Line

Max 17℃
Min 7℃

Snow unlikely

Partner Offers

Shiga Ichinose Diamond 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 Shiga Ichinose Diamond from OpenMeteo(JMA)
	Snow and Weather	Temp Town
Mon 21	Clear spells.	Max 16℃ Min 14℃
Tue 22	Clear sky.	Max 17℃ Min 11℃
Wed 23	Fair.	Max 16℃ Min 10℃
Thu 24	Clear sky.	Max 16℃ Min 9℃
Fri 25	Fair.	Max 17℃ Min 7℃
Sat 26	Light drizzle.	Max 14℃ Min 12℃
Sun 27	Light rain.	Max 15℃ Min 12℃

No significant snowfall is forecast for this period.

This Snow Forecast for Shiga Ichinose Diamond, Japan 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 Shiga Ichinose Diamond, 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.

Shiga Ichinose Diamond Snow Forecast updated at 13:40 AEST, next update expected 19:00 AEST.

Ensemble forecast for Shiga Ichinose Diamond, Japan at 1,600m

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

Shiga Ichinose Diamond typically enjoys consistent snowfall throughout the season, with snow depths averaging around 2 meters. For the latest snow conditions, including snowfall updates, check J2Ski for reliable information.

Off-Piste Safety in Shiga Ichinose Diamond

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