76 winters, day by day
Tschiertschen, Switzerland. Every ski winter from 1950/51 to 2025/26.
Tschiertschen, 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.
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Climate change
Average winter temperature at the summit
Faster warming than 59% of 736 resorts
+2.2°C+4.0°F
The trend: from -9°C16°F to -7°C20°F. Point at a winter to read it.
Snowfall at the summit
−10%
The trend: from 3.9 m154 in to 3.5 m139 in. Point at a winter to read it.
Powder days at the summit
±0 days
The trend: from 8 to 8. Point at a winter to read it.
Days with a base at the summit
−10 days
The trend: from 172 to 162. Point at a winter to read it.
Days with a base in the village
−16 days
The trend: from 167 to 151. 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−6%
Then
3.8 m151 in
Now
3.6 m143 in
- Snowfall in the village−14%
Then
2.6 m103 in
Now
2.2 m88 in
- Powder days at the summit+1 day
Then
8
Now
8
- Days with a base at the summit−6 days
Then
171
Now
165
- Days with a base in the village−9 days
Then
164
Now
155
- Average temperature at the summit+1.3°C+2.3°F
Then
-9°C16°F
Now
-7°C19°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
- 1950s1950/515.7 m223 in1951/523.8 m150 in1952/533.4 m135 in1953/542.8 m110 in1954/554.1 m163 in1955/562.8 m109 in1956/572.2 m88 in1957/584.0 m156 in1958/593.1 m121 in1959/604.1 m161 in
- 1960s1960/613.6 m141 in1961/624.0 m156 in1962/633.8 m149 in1963/642.7 m107 in1964/653.7 m144 in1965/664.4 m172 in1966/675.0 m198 in1967/684.3 m169 in1968/692.9 m115 in1969/705.6 m219 in
- 1970s1970/713.1 m121 in1971/723.6 m143 in1972/733.3 m130 in1973/743.8 m150 in1974/755.2 m204 in1975/762.5 m99 in1976/775.0 m198 in1977/784.7 m186 in1978/794.0 m157 in1979/804.2 m166 in
- 1980s1980/813.2 m127 in1981/824.0 m156 in1982/834.0 m159 in1983/843.8 m150 in1984/853.7 m144 in1985/864.5 m178 in1986/873.5 m137 in1987/884.0 m156 in1988/893.8 m150 in1989/903.2 m126 in
- 1990s1990/913.2 m124 in1991/924.7 m184 in1992/932.9 m116 in1993/943.3 m131 in1994/954.3 m169 in1995/962.3 m91 in1996/973.7 m144 in1997/984.1 m161 in1998/994.8 m187 in1999/004.5 m175 in
- 2000s2000/016.1 m241 in2001/022.8 m111 in2002/033.8 m150 in2003/043.9 m154 in2004/052.6 m103 in2005/063.1 m120 in2006/072.7 m107 in2007/084.2 m164 in2008/094.4 m171 in2009/103.4 m134 in
- 2010s2010/112.6 m100 in2011/124.1 m163 in2012/133.7 m147 in2013/144.3 m167 in2014/153.8 m150 in2015/163.1 m120 in2016/172.8 m108 in2017/184.2 m164 in2018/193.9 m154 in2019/203.6 m143 in
- 2020s2020/213.5 m137 in2021/222.8 m111 in2022/232.8 m110 in2023/245.1 m202 in2024/252.5 m99 in2025/262.3 m89 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