76 winters, day by day
Chäserrugg-Alt St. Johann, Switzerland. Every ski winter from 1950/51 to 2025/26.
Chäserrugg-Alt St. Johann, 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 79% of 736 resorts
+2.7°C+4.8°F
The trend: from -10°C15°F to -7°C19°F. Point at a winter to read it.
Snowfall at the summit
−24%
The trend: from 3.7 m146 in to 2.8 m112 in. Point at a winter to read it.
Powder days at the summit
−2 days
The trend: from 9 to 7. Point at a winter to read it.
Days with a base at the summit
−25 days
The trend: from 150 to 125. Point at a winter to read it.
Days with fresh snow at the summit
−13 days
The trend: from 66 to 53. 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−16%
Then
3.5 m139 in
Now
3.0 m117 in
- Snowfall in the village−25%
Then
2.1 m81 in
Now
1.5 m61 in
- Powder days at the summit−2 days
Then
9
Now
7
- Days with a base at the summit−14 days
Then
146
Now
132
- Average temperature at the summit+1.5°C+2.8°F
Then
-9°C16°F
Now
-8°C18°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
- 1950s1950/514.1 m161 in1951/523.3 m131 in1952/533.9 m153 in1953/542.7 m106 in1954/553.7 m146 in1955/562.6 m101 in1956/572.0 m77 in1957/583.9 m154 in1958/592.4 m95 in1959/603.0 m117 in
- 1960s1960/612.6 m100 in1961/623.5 m139 in1962/634.0 m157 in1963/641.8 m71 in1964/653.7 m144 in1965/664.2 m166 in1966/675.1 m200 in1967/684.5 m176 in1968/693.2 m126 in1969/706.0 m238 in
- 1970s1970/712.6 m102 in1971/722.6 m100 in1972/734.2 m165 in1973/743.7 m146 in1974/754.6 m180 in1975/762.5 m100 in1976/774.0 m159 in1977/784.3 m171 in1978/792.8 m111 in1979/804.5 m176 in
- 1980s1980/814.1 m162 in1981/825.2 m204 in1982/833.7 m146 in1983/843.5 m137 in1984/852.9 m116 in1985/863.7 m146 in1986/873.5 m139 in1987/884.1 m163 in1988/892.7 m106 in1989/902.2 m87 in
- 1990s1990/912.4 m96 in1991/923.5 m136 in1992/932.4 m93 in1993/943.3 m128 in1994/954.0 m157 in1995/962.3 m91 in1996/972.8 m111 in1997/982.9 m114 in1998/995.1 m200 in1999/004.5 m176 in
- 2000s2000/013.6 m141 in2001/022.3 m91 in2002/032.5 m98 in2003/043.4 m133 in2004/052.9 m114 in2005/063.3 m128 in2006/072.2 m86 in2007/083.5 m139 in2008/093.7 m144 in2009/102.5 m97 in
- 2010s2010/112.0 m80 in2011/123.9 m152 in2012/133.5 m139 in2013/142.4 m94 in2014/153.0 m120 in2015/163.0 m119 in2016/172.4 m93 in2017/183.5 m137 in2018/193.3 m128 in2019/202.3 m91 in
- 2020s2020/213.2 m128 in2021/222.8 m109 in2022/231.7 m67 in2023/243.3 m131 in2024/251.9 m73 in2025/262.3 m91 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