Inawashiro 7-Day Snow Forecast

Inawashiro Long-Range Snow Forecast Updated today

ECMWF IFS

GFS

JMA

PROSubscribe to Switch Weather Model

Updated 21 June 2026 15:40 UTC

Long-Range Snow Forecast for Inawashiro

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

For Forecast detail, see below.

Inawashiro Snow Forecast Highlights

When will there be fresh snow in Inawashiro?

Inawashiro Snow Forecast Highlights - JMA
Snowfall prediction at mid-mountain (938m)
Next Snow?
There is no snow currently in the forecast for Inawashiro.

Long-range Snow Outlook for Inawashiro

Snowfall

Snow Line

Max 22℃ 71°F
Min 12℃ 54°F

Snow unlikely

Inawashiro 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 Inawashiro from OpenMeteo(JMA)
	Snow and Weather	Temp Town
Sun 21	Clear spells.	Max 18℃ 64°F Min 16℃ 61°F
Mon 22	Light drizzle.	Max 17℃ 62°F Min 15℃ 58°F
Tue 23	Clear spells.	Max 15℃ 59°F Min 12℃ 54°F
Wed 24	Clear sky.	Max 21℃ 71°F Min 12℃ 54°F
Thu 25	Rain showers.	Max 22℃ 71°F Min 12℃ 54°F
Fri 26	Rain showers.	Max 20℃ 68°F Min 15℃ 60°F
Sat 27	Cloudy.	Max 21℃ 69°F Min 13℃ 56°F

No significant snowfall is forecast for this period.

This Snow Forecast for Inawashiro, 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 Inawashiro, 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.

Inawashiro Snow Forecast updated at 15:40 UTC, next update expected 21:00 UTC.

Ensemble forecast for Inawashiro, Japan at 675m

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

Inawashiro typically enjoys reliable snow conditions, with an average snow depth of 1 to 2 meters and consistent snowfall throughout the winter season. For the latest snow information, be sure to check J2Ski.

Off-Piste Safety in Inawashiro

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