SnowOdds

76 winters, day by day

Blue Resort Norikura, Japan. Every ski winter from 1950/51 to 2025/26.

Painting of Blue Resort Norikura
Average winter
2.3 m89 in
Snowiest winter
3.4 m134 in
Leanest winter
1.4 m54 in
Powder days a winter
3

Every day of every winter

Each row is a winter, oldest at the top. Each column is a day, from the start of the season to the end. The darker the blue, the more snow fell that day.

Loading the daily snowfall…

Winter total
1950/511960/611970/711980/811990/912000/012010/112020/21
New snow in a day
1 cm0.4 in3 cm1 in7 cm3 in15 cm6 in30 cm12 in50 cm20 in

Climate change

One stripe per winter, 1950/51 to 2025/26. Blue winters were colder than this resort’s average, red ones warmer.

Average winter temperature at the summit

Faster warming than 12% of 736 resorts

+1.4°C+2.5°F

The trend: from -6°C21°F to -5°C24°F. Point at a winter to read it.

-8°18°-6°21°-4°25°-2°28°

Snowfall at the summit

−5%

The trend: from 2.3 m92 in to 2.2 m87 in. Point at a winter to read it.

1.5 m59 in2.0 m79 in2.5 m98 in3.0 m118 in3.5 m138 in

Powder days at the summit

−1 day

The trend: from 4 to 3. Point at a winter to read it.

02468

Days with a base at the summit

−8 days

The trend: from 127 to 120. Point at a winter to read it.

80100120140160

Days with fresh snow at the summit

−6 days

The trend: from 58 to 52. Point at a winter to read it.

3040506070

Each dot is one winter. The curve is a running average over about ten winters; the dotted line is the straight trend through all of them, and the changes above are measured along it. One winter is weather; the trend is climate.

Then and now

Then 1950/51–1979/80Now 1996/97–2025/26

Snowfall at the summit−2%

Then

2.3 m90 in

Now

2.3 m89 in

Snowfall in the village±0

Then

1.9 m76 in

Now

1.9 m76 in

Powder days at the summit±0 days

Then

3

Now

3

Days with a base at the summit−4 days

Then

124

Now

121

Average temperature at the summit+0.8°C+1.4°F

Then

-6°C22°F

Now

-5°C23°F

Averages per winter over the first and last 30 winters. A powder day brings 10 cm4 in or more of new snow; a base is 30 cm12 in or more on the ground.

Records

Most snow in a day
31 cm12 in
Snowiest winter
3.4 m134 in
Leanest winter
1.4 m54 in
Deepest snow on the ground
175 cm69 in
Coldest night at the summit
-27°C-17°F
Strongest gust at the summit
137 km/h85 mph

All winters

Modelled weather from ERA5 and ERA5-Land, not measured on the slopes. Snow depth is the average over a grid cell about 9 km wide, so it can differ a lot from what the piste report says. How SnowOdds works