76 winters, day by day
Arosa Lenzerheide, Switzerland. Every ski winter from 1950/51 to 2025/26.
Arosa Lenzerheide, 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 61% of 736 resorts
+2.3°C+4.1°F
The trend: from -13°C9°F to -10°C13°F. Point at a winter to read it.
Snowfall at the summit
−10%
The trend: from 3.9 m155 in to 3.5 m139 in. Point at a winter to read it.
Powder days at the summit
+1 day
The trend: from 8 to 8. Point at a winter to read it.
Days with a base at the summit
−13 days
The trend: from 171 to 158. 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−5%
Then
3.9 m152 in
Now
3.7 m144 in
- Snowfall in the village−17%
Then
2.3 m91 in
Now
1.9 m76 in
- Powder days at the summit+1 day
Then
8
Now
8
- Days with a base at the summit−7 days
Then
169
Now
162
- 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
-12°C10°F
Now
-11°C13°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 m224 in1951/523.8 m151 in1952/533.5 m136 in1953/542.8 m111 in1954/554.1 m163 in1955/562.8 m111 in1956/572.3 m89 in1957/584.0 m156 in1958/593.1 m122 in1959/604.1 m161 in
- 1960s1960/613.6 m142 in1961/624.0 m157 in1962/633.8 m150 in1963/642.8 m109 in1964/653.7 m144 in1965/664.4 m174 in1966/675.1 m199 in1967/684.3 m170 in1968/692.9 m116 in1969/705.6 m219 in
- 1970s1970/713.1 m122 in1971/723.6 m143 in1972/733.3 m131 in1973/743.8 m151 in1974/755.2 m204 in1975/762.5 m99 in1976/775.0 m198 in1977/784.7 m187 in1978/794.0 m158 in1979/804.2 m166 in
- 1980s1980/813.2 m127 in1981/824.0 m156 in1982/834.1 m160 in1983/843.8 m150 in1984/853.7 m145 in1985/864.6 m180 in1986/873.5 m137 in1987/884.0 m156 in1988/893.8 m151 in1989/903.2 m126 in
- 1990s1990/913.2 m125 in1991/924.7 m184 in1992/933.0 m116 in1993/943.4 m132 in1994/954.3 m170 in1995/962.3 m91 in1996/973.7 m144 in1997/984.1 m162 in1998/994.8 m187 in1999/004.5 m176 in
- 2000s2000/016.1 m242 in2001/022.8 m111 in2002/033.8 m150 in2003/043.9 m154 in2004/052.6 m104 in2005/063.1 m121 in2006/072.7 m107 in2007/084.2 m165 in2008/094.4 m173 in2009/103.4 m135 in
- 2010s2010/112.6 m101 in2011/124.1 m163 in2012/133.8 m149 in2013/144.3 m168 in2014/153.9 m152 in2015/163.1 m121 in2016/172.8 m109 in2017/184.2 m165 in2018/193.9 m154 in2019/203.7 m144 in
- 2020s2020/213.5 m137 in2021/222.9 m113 in2022/232.8 m111 in2023/245.2 m203 in2024/252.5 m100 in2025/262.3 m90 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