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Ski Japan - Nagano

Shiga Kogen-Sun Valley Snow Forecast

Lat Long: 36.72° N 138.48° E

Weather Forecast for Shiga Kogen Sun Valley at 1475m altitude

Issued: 8 pm 24 Jun 2026 (local time)

Forecast update in  hr  min

Last 6 daysScroll left for last 6 daysNow

Next 4 days weather summary:

Heavy rain (total 50.0mm), heaviest during Fri morning. Very mild (max 17°C on Sat morning, min 12°C on Wed night). Wind will be generally light.

Days 5-7 weather summary:

Moderate rain (total 17.0mm), heaviest on Sun afternoon. Very mild (max 19°C on Tue afternoon, min 14°C on Sat night). Wind will be generally light.

Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
light rain
mod rain
light rain
mod rain
heavy rain
light rain
rain showers
cloud
rain showers
cloud
light rain
thunderstorm
rain showers
rain showers
rain showers
rain showers
light rain
mod. rain
light rain
mod. rain
heavy rain
light rain
rain shwrs
cloudy
rain shwrs
cloudy
light rain
t-storm
risk
rain shwrs
rain shwrs
rain shwrs
rain shwrs
km/h
5
SSE
10
SSE
10
SE
10
S
5
WSW
15
SW
5
WSW
5
SSW
0
NNE
0
W
5
NNW
0
NE
5
NNW
5
NW
10
N
5
SSW
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snow map
Snowflake cm
 mm
3
7
2
8
22
3
3
2
2
4
3
1
2
1
max °C
13
13
12
13
15
15
13
17
17
15
17
16
14
18
18
15
min °C
12
12
12
12
14
14
13
15
16
14
15
15
14
16
15
14
 chill °C
12
11
11
11
14
14
12
15
16
14
15
15
14
16
15
14
Humid %
89
93
95
91
94
85
94
86
89
97
89
89
98
78
69
92
Freeze m
3950
4100
4300
4450
4400
4450
4400
4400
4800
4950
4650
4500
4100
4250
4150
4250
Sea lvl1000m2000m3000m4000m5000m
1212121315141316161516161416161412121212151413171714171614181714
Sunrise
4:28
4:28
4:28
4:28
4:28
Sunset
7:07
7:07
7:07
7:07
7:07

Days 7-16 weather summary:

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Avalanche information: Japan Avalanche Network

Popular Shiga Kogen-Sun Valley Pages

Snow Radar

Latest snow reports near Shiga Kogen-Sun Valley:

No recent snow reports

No recent snow reports

Shiga Kogen-Sun Valley Snow Conditions

Top snow depth:
Bottom snow depth:
Fresh snowfall depth:
Last snowfall: 9 May 2026
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Other resorts in Japan - Nagano are reporting: powder (0) / good piste (0)

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Snow History

Week 4 of June has on average:

0.0
Bluebird Powder days
Fresh snow, mostly sunny, light wind.
0.0
Powder days
Fresh snow, limited sun, any wind.
0.0
Bluebird days
Average snow, mostly sunny, light wind.


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