76 winters, day by day
Les Rousses, Switzerland. Every ski winter from 1950/51 to 2025/26.
Les Rousses, Switzerland. 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 77% of 736 resorts
+2.6°C+4.7°F
The trend: from -4°C26°F to -1°C30°F. Point at a winter to read it.
Snowfall at the summit
−27%
The trend: from 3.2 m124 in to 2.3 m91 in. Point at a winter to read it.
Powder days at the summit
−3 days
The trend: from 9 to 6. Point at a winter to read it.
Days with a base at the summit
−66 days
The trend: from 103 to 37. Point at a winter to read it.
Days with fresh snow at the summit
−13 days
The trend: from 51 to 38. 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−18%
Then
2.9 m116 in
Now
2.4 m95 in
- Snowfall in the village−18%
Then
2.9 m116 in
Now
2.4 m95 in
- Powder days at the summit−2 days
Then
8
Now
7
- Days with a base at the summit−40 days
Then
90
Now
50
- Average temperature at the summit+1.5°C+2.8°F
Then
-3°C27°F
Now
-1°C29°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
- 1950s1950/513.8 m148 in1951/522.9 m115 in1952/533.5 m136 in1953/542.2 m85 in1954/552.7 m107 in1955/561.6 m63 in1956/572.1 m83 in1957/583.8 m150 in1958/592.1 m83 in1959/602.8 m111 in
- 1960s1960/612.5 m98 in1961/622.5 m98 in1962/633.5 m137 in1963/6476 cm30 in1964/652.5 m96 in1965/664.3 m169 in1966/673.6 m143 in1967/683.9 m154 in1968/692.7 m105 in1969/705.5 m217 in
- 1970s1970/712.0 m80 in1971/722.4 m96 in1972/732.7 m105 in1973/742.3 m91 in1974/753.0 m118 in1975/762.1 m84 in1976/773.3 m128 in1977/784.8 m189 in1978/792.9 m113 in1979/803.6 m141 in
- 1980s1980/814.2 m165 in1981/824.3 m171 in1982/834.0 m157 in1983/844.1 m162 in1984/852.7 m106 in1985/863.6 m143 in1986/872.9 m114 in1987/883.1 m123 in1988/892.5 m98 in1989/901.5 m57 in
- 1990s1990/912.5 m98 in1991/921.9 m74 in1992/931.2 m48 in1993/943.7 m146 in1994/953.1 m123 in1995/961.6 m63 in1996/972.4 m95 in1997/982.3 m89 in1998/994.2 m165 in1999/002.6 m102 in
- 2000s2000/012.4 m96 in2001/021.7 m67 in2002/031.9 m75 in2003/042.4 m94 in2004/052.6 m104 in2005/063.1 m123 in2006/071.5 m58 in2007/082.7 m104 in2008/093.3 m131 in2009/102.0 m80 in
- 2010s2010/111.7 m65 in2011/122.7 m108 in2012/133.9 m155 in2013/142.5 m97 in2014/152.4 m94 in2015/163.0 m120 in2016/171.8 m71 in2017/183.6 m140 in2018/192.5 m96 in2019/202.4 m93 in
- 2020s2020/212.9 m115 in2021/222.0 m80 in2022/2395 cm37 in2023/241.4 m55 in2024/251.3 m53 in2025/262.2 m86 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