SnowOdds

76 winters, day by day

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

Painting of Les Contamines
Average winter
5.5 m218 in
Snowiest winter
9.1 m359 in
Leanest winter
3.0 m117 in
Powder days a winter
18

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 53% of 736 resorts

+2.2°C+3.9°F

The trend: from -10°C14°F to -8°C18°F. Point at a winter to read it.

-10°14°-8°18°-6°21°

Snowfall at the summit

−5%

The trend: from 5.7 m224 in to 5.4 m213 in. Point at a winter to read it.

4.0 m157 in6.0 m236 in8.0 m315 in

Powder days at the summit

±0 days

The trend: from 18 to 18. Point at a winter to read it.

102030

Days with a base at the summit

−7 days

The trend: from 169 to 162. Point at a winter to read it.

120140160180

Days with a base in the village

−3 days

The trend: from 157 to 155. Point at a winter to read it.

100120140160180

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−6%

Then

5.6 m222 in

Now

5.3 m209 in

Snowfall in the village−14%

Then

3.0 m117 in

Now

2.6 m101 in

Powder days at the summit−1 day

Then

18

Now

17

Days with a base at the summit−5 days

Then

169

Now

164

Days with a base in the village−1 day

Then

159

Now

157

Average temperature at the summit+1.2°C+2.2°F

Then

-9°C15°F

Now

-8°C17°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
66 cm26 in
Snowiest winter
9.1 m359 in
Leanest winter
3.0 m117 in
Deepest snow on the ground
382 cm150 in
Coldest night at the summit
-36°C-32°F
Strongest gust at the summit
159 km/h99 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