76 winters, day by day
Aillon-Margériaz, France. Every ski winter from 1950/51 to 2025/26.
Aillon-Margériaz, France. Every ski winter from 1950/51 to 2025/26.
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…
Climate change
Average winter temperature at the summit
Faster warming than 97% of 736 resorts
+3.3°C+6.0°F
The trend: from -6°C21°F to -3°C27°F. Point at a winter to read it.
Snowfall at the summit
−30%
The trend: from 1.6 m63 in to 1.1 m44 in. Point at a winter to read it.
Powder days at the summit
−1 day
The trend: from 3 to 2. Point at a winter to read it.
Days with a base at the summit
−61 days
The trend: from 115 to 53. Point at a winter to read it.
Days with fresh snow at the summit
−10 days
The trend: from 34 to 24. 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 1950/51–1979/80Now 1996/97–2025/26
- Snowfall at the summit−20%
Then
1.5 m58 in
Now
1.2 m47 in
- Powder days at the summit±0 days
Then
3
Now
2
- Days with a base at the summit−37 days
Then
103
Now
66
- Average temperature at the summit+2.0°C+3.6°F
Then
-5°C22°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
- 1950s1950/512.0 m77 in1951/521.7 m68 in1952/531.9 m76 in1953/5497 cm38 in1954/551.7 m67 in1955/5678 cm31 in1956/5781 cm32 in1957/581.7 m67 in1958/5986 cm34 in1959/6094 cm37 in
- 1960s1960/611.4 m55 in1961/621.0 m40 in1962/632.1 m81 in1963/6418 cm7 in1964/651.6 m61 in1965/661.9 m74 in1966/671.6 m65 in1967/682.1 m83 in1968/691.4 m54 in1969/702.8 m109 in
- 1970s1970/711.2 m48 in1971/721.6 m64 in1972/731.5 m60 in1973/7499 cm39 in1974/751.3 m52 in1975/761.2 m49 in1976/771.6 m65 in1977/782.7 m108 in1978/791.2 m48 in1979/801.6 m64 in
- 1980s1980/812.5 m100 in1981/821.8 m70 in1982/831.9 m76 in1983/841.8 m72 in1984/851.5 m59 in1985/861.7 m68 in1986/871.8 m70 in1987/881.4 m55 in1988/891.2 m46 in1989/9051 cm20 in
- 1990s1990/911.6 m63 in1991/9291 cm36 in1992/9359 cm23 in1993/941.9 m74 in1994/951.5 m59 in1995/9692 cm36 in1996/971.1 m45 in1997/981.0 m40 in1998/992.4 m94 in1999/001.5 m58 in
- 2000s2000/0164 cm25 in2001/0258 cm23 in2002/0388 cm35 in2003/041.3 m51 in2004/051.7 m67 in2005/061.4 m55 in2006/0763 cm25 in2007/081.3 m51 in2008/091.6 m62 in2009/101.5 m57 in
- 2010s2010/111.1 m42 in2011/121.1 m44 in2012/132.2 m85 in2013/141.3 m49 in2014/151.5 m61 in2015/161.5 m57 in2016/1771 cm28 in2017/181.5 m58 in2018/191.2 m47 in2019/2063 cm25 in
- 2020s2020/211.5 m58 in2021/221.4 m54 in2022/2347 cm19 in2023/2461 cm24 in2024/2562 cm24 in2025/261.0 m40 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