76 winters, day by day
Le Grand-Bornand, France. Every ski winter from 1950/51 to 2025/26.
Le Grand-Bornand, 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 80% of 736 resorts
+2.7°C+4.8°F
The trend: from -8°C18°F to -5°C23°F. Point at a winter to read it.
Snowfall at the summit
−13%
The trend: from 3.7 m144 in to 3.2 m126 in. Point at a winter to read it.
Powder days at the summit
−1 day
The trend: from 10 to 9. Point at a winter to read it.
Days with a base at the summit
−7 days
The trend: from 152 to 145. Point at a winter to read it.
Days with a base in the village
−16 days
The trend: from 146 to 130. 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−9%
Then
3.5 m140 in
Now
3.2 m127 in
- Snowfall in the village−26%
Then
1.7 m67 in
Now
1.3 m50 in
- Powder days at the summit±0 days
Then
9
Now
9
- Days with a base at the summit−4 days
Then
151
Now
147
- Days with a base in the village−9 days
Then
144
Now
134
- Average temperature at the summit+1.5°C+2.7°F
Then
-7°C19°F
Now
-6°C22°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
- 1950s1950/514.3 m170 in1951/523.7 m144 in1952/533.7 m145 in1953/542.3 m91 in1954/553.8 m148 in1955/562.2 m86 in1956/572.0 m77 in1957/584.3 m168 in1958/592.7 m105 in1959/603.4 m132 in
- 1960s1960/613.2 m125 in1961/623.5 m138 in1962/633.9 m153 in1963/641.4 m56 in1964/653.3 m130 in1965/665.3 m210 in1966/673.9 m155 in1967/684.0 m156 in1968/693.4 m133 in1969/706.3 m249 in
- 1970s1970/712.9 m112 in1971/723.0 m119 in1972/733.0 m117 in1973/743.0 m118 in1974/754.1 m159 in1975/762.5 m97 in1976/774.1 m161 in1977/785.4 m211 in1978/793.5 m139 in1979/804.7 m185 in
- 1980s1980/814.4 m173 in1981/824.9 m192 in1982/834.5 m176 in1983/844.6 m180 in1984/853.4 m134 in1985/863.9 m154 in1986/873.5 m139 in1987/884.2 m165 in1988/893.2 m126 in1989/902.3 m89 in
- 1990s1990/912.9 m113 in1991/922.9 m113 in1992/932.0 m79 in1993/944.1 m161 in1994/954.6 m180 in1995/962.0 m78 in1996/973.2 m125 in1997/983.3 m129 in1998/994.8 m187 in1999/003.9 m153 in
- 2000s2000/013.8 m148 in2001/022.3 m90 in2002/033.0 m117 in2003/043.2 m128 in2004/053.2 m126 in2005/063.2 m125 in2006/072.4 m94 in2007/083.7 m144 in2008/093.3 m128 in2009/103.0 m118 in
- 2010s2010/112.2 m85 in2011/123.8 m148 in2012/134.5 m178 in2013/143.3 m130 in2014/152.9 m114 in2015/163.6 m140 in2016/172.5 m97 in2017/184.5 m177 in2018/193.4 m133 in2019/203.6 m143 in
- 2020s2020/213.3 m129 in2021/223.0 m118 in2022/232.2 m86 in2023/243.1 m120 in2024/252.4 m94 in2025/263.0 m117 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