76 winters, day by day
Cerro Perito Moreno, Argentina. Every ski winter from 1950 to 2025.
Cerro Perito Moreno, Argentina. Every ski winter from 1950 to 2025.
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.
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Climate change
Average winter temperature at the summit
Faster warming than 2% of 736 resorts
+0.6°C+1.0°F
The trend: from -4°C25°F to -3°C26°F. Point at a winter to read it.
Snowfall at the summit
−7%
The trend: from 3.9 m153 in to 3.6 m142 in. Point at a winter to read it.
Powder days at the summit
+1 day
The trend: from 10 to 10. Point at a winter to read it.
Days with a base at the summit
−14 days
The trend: from 133 to 119. Point at a winter to read it.
Days with fresh snow at the summit
−8 days
The trend: from 68 to 60. Point at a winter to read it.
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 1950–1979Now 1996–2025
- Snowfall at the summit−8%
Then
4.0 m156 in
Now
3.7 m144 in
- Snowfall in the village−33%
Then
1.4 m56 in
Now
96.5 cm38 in
- Powder days at the summit±0 days
Then
10
Now
10
- Days with a base at the summit−10 days
Then
132
Now
123
- Average temperature at the summit+0.4°C+0.7°F
Then
-4°C25°F
Now
-3°C26°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
All winters
- 1950s19504.2 m164 in19513.4 m133 in19523.3 m129 in19535.3 m209 in19544.4 m175 in19552.7 m107 in19563.6 m142 in19574.2 m164 in19584.1 m159 in19594.1 m159 in
- 1960s19604.5 m176 in19614.1 m159 in19622.3 m90 in19632.7 m105 in19644.5 m176 in19653.6 m140 in19664.0 m157 in19674.7 m185 in19682.4 m94 in19695.2 m204 in
- 1970s19704.1 m161 in19715.8 m229 in19723.4 m133 in19734.0 m157 in19743.3 m129 in19755.4 m211 in19763.3 m131 in19774.6 m179 in19784.2 m167 in19794.0 m158 in
- 1980s19804.1 m159 in19813.2 m125 in19824.0 m158 in19835.1 m199 in19843.8 m148 in19852.1 m83 in19862.5 m98 in19872.2 m88 in19883.9 m152 in19893.1 m122 in
- 1990s19902.8 m109 in19913.3 m131 in19924.4 m172 in19933.1 m122 in19943.7 m147 in19955.0 m196 in19962.0 m78 in19972.6 m104 in19982.8 m110 in19992.9 m116 in
- 2000s20005.3 m208 in20013.9 m152 in20023.5 m139 in20033.8 m148 in20043.9 m153 in20052.9 m115 in20064.1 m161 in20075.0 m196 in20083.4 m133 in20093.5 m139 in
- 2010s20104.1 m161 in20113.8 m150 in20123.6 m140 in20133.7 m145 in20143.6 m142 in20153.8 m151 in20162.4 m95 in20175.1 m202 in20184.0 m156 in20194.6 m180 in
- 2020s20204.8 m190 in20212.7 m107 in20224.7 m187 in20234.3 m171 in20243.2 m126 in20251.8 m69 in
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