Sun Valley (Nagano) snow
Ski Japan - Nagano

Sun Valley (Nagano) Snow Forecast

Weather Forecast for Sun Valley (Nagano) at 1510 m
Issued: 8 pm  18 Sep 2025 (local time)

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The snow forecast for Sun Valley (Nagano) is: Heavy rain (total 26.0mm), heaviest during Sat afternoon. Very mild (max 15°C on Sat night, min 9°C on Sun afternoon). Wind will be generally light.

Sun Valley (Nagano) Weather (Next 3 days): The snow forecast for Sun Valley (Nagano) is: Heavy rain (total 26.0mm), heaviest during Sat afternoon. Very mild (max 15°C on Sat night, min 9°C on Sun afternoon). Wind will be generally light.

Sun Valley (Nagano) Weather (Days 4-6): Moderate rain (total 10.0mm), heaviest on Mon afternoon. Very mild (max 13°C on Mon morning, min 8°C on Sun night). Wind will be generally light.


Sun Valley (Nagano) Live Weather

ResortSnow DepthTemp. (°C)Wind (km/h)Weather
Top Lift: 
12
10
cloud
Bottom Lift: 
13
10
cloud
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6 Day Forecast
Issued: 8 pm 18 Sep 2025 / Updates in ::
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Last 6 daysScroll left for last 6 daysNow
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
cloud
light rain
rain showers
light rain
light rain
mod rain
mod rain
light rain
light rain
part cloud
part cloud
light rain
light rain
cloud
cloud
light rain
light rain
light rain
heavy rain
cloudy
light rain
rain shwrs
light rain
light rain
mod. rain
mod. rain
light rain
light rain
some clouds
some clouds
light rain
light rain
cloudy
cloudy
light rain
light rain
light rain
heavy rain
 km/h
10
N
0
S
5
SSE
10
SSE
15
SSE
15
S
10
W
15
NNW
15
N
10
NNE
5
N
5
NNE
10
SSE
5
SSE
5
SE
10
SSE
10
SSE
15
SE
20
SE
Snow map
 cm 
 mm 
1
1
1
1
8
10
2
2
2
2
2
2
2
11
max°C
13
13
12
12
13
14
15
11
10
9
13
13
11
12
12
11
11
12
13
min°C
11
12
11
12
12
13
12
11
9
8
10
12
10
11
11
11
11
11
12
chill°C 
10
12
10
11
10
13
11
9
7
7
10
11
8
10
10
10
10
9
10
Humid% 
98
97
96
93
93
92
97
97
94
87
80
72
92
84
82
85
90
94
94
Freezing level (m
4250
4050
4150
4200
4450
4550
4300
3700
3650
3600
3400
3400
3700
3800
3800
3800
4200
4450
4750
topliftbotliftSea lvl1000m2000m3000m4000m5000m
11121212131313111081112101111111111131213121213131312108141210131210121213
Sunrise
5:30
5:31
5:31
5:33
5:33
5:33
Sunset
5:47
5:46
5:45
5:44
5:42
5:40
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Snow Radar

Latest snow reports near Sun Valley (Nagano):

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Sun Valley (Nagano) Snow Conditions

Top snow depth:
Bottom snow depth:
Fresh snowfall depth:
Last snowfall:28 Apr 2025
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Other resorts in Japan - Nagano are reporting: powder (0) / good piste (0)

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Snow History

Week 3 of September 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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