SnowOdds

76 winters, day by day

Chamrousse, France. Every ski winter from 1950/51 to 2025/26.

Painting of Chamrousse
Average winter
3.9 m152 in
Snowiest winter
6.2 m244 in
Leanest winter
2.2 m86 in
Powder days a winter
12

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 49% of 736 resorts

+2.1°C+3.8°F

The trend: from -8°C18°F to -6°C22°F. Point at a winter to read it.

-8°18°-6°21°-4°25°

Snowfall at the summit

−12%

The trend: from 4.1 m161 in to 3.6 m143 in. Point at a winter to read it.

2.0 m79 in3.0 m118 in4.0 m157 in5.0 m197 in6.0 m236 in

Powder days at the summit

±0 days

The trend: from 12 to 12. Point at a winter to read it.

510152025

Days with a base at the summit

−7 days

The trend: from 155 to 148. Point at a winter to read it.

100150

Days with a base in the village

−16 days

The trend: from 137 to 121. Point at a winter to read it.

50100150

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−10%

Then

4.1 m160 in

Now

3.7 m144 in

Snowfall in the village−14%

Then

3.3 m130 in

Now

2.8 m112 in

Powder days at the summit±0 days

Then

12

Now

11

Days with a base at the summit−5 days

Then

156

Now

151

Days with a base in the village−10 days

Then

136

Now

126

Average temperature at the summit+1.2°C+2.1°F

Then

-7°C19°F

Now

-6°C21°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
40 cm16 in
Snowiest winter
6.2 m244 in
Leanest winter
2.2 m86 in
Deepest snow on the ground
279 cm110 in
Coldest night at the summit
-34°C-29°F
Strongest gust at the summit
147 km/h91 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