SnowOdds

76 winters, day by day

Le Grand Massif, France. Every ski winter from 1950/51 to 2025/26.

Painting of Le Grand Massif
Average winter
5.6 m219 in
Snowiest winter
9.6 m378 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 48% of 736 resorts

+2.1°C+3.8°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

−7%

The trend: from 5.8 m226 in to 5.4 m211 in. Point at a winter to read it.

4.0 m157 in6.0 m236 in8.0 m315 in10.0 m394 in

Powder days at the summit

±0 days

The trend: from 19 to 18. Point at a winter to read it.

102030

Days with a base at the summit

−6 days

The trend: from 171 to 165. Point at a winter to read it.

140160180

Days with a base in the village

−6 days

The trend: from 162 to 156. 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

5.7 m223 in

Now

5.3 m209 in

Snowfall in the village−26%

Then

1.3 m50 in

Now

94.433 cm37 in

Powder days at the summit±0 days

Then

18

Now

18

Days with a base at the summit−4 days

Then

170

Now

166

Days with a base in the village−4 days

Then

162

Now

158

Average temperature at the summit+1.2°C+2.1°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
56 cm22 in
Snowiest winter
9.6 m378 in
Leanest winter
3.0 m117 in
Deepest snow on the ground
402 cm158 in
Coldest night at the summit
-36°C-33°F
Strongest gust at the summit
153 km/h95 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