76 winters, day by day
Bonneval-sur-Arc, France. Every ski winter from 1950/51 to 2025/26.
Bonneval-sur-Arc, 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 30% of 736 resorts
+1.8°C+3.3°F
The trend: from -11°C13°F to -9°C16°F. Point at a winter to read it.
Snowfall at the summit
−1%
The trend: from 4.2 m164 in to 4.1 m163 in. Point at a winter to read it.
Powder days at the summit
±0 days
The trend: from 11 to 11. Point at a winter to read it.
Days with a base at the summit
−7 days
The trend: from 174 to 167. Point at a winter to read it.
Days with fresh snow at the summit
−2 days
The trend: from 67 to 65. 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−4%
Then
4.2 m167 in
Now
4.1 m160 in
- Snowfall in the village−16%
Then
2.9 m114 in
Now
2.4 m96 in
- Powder days at the summit±0 days
Then
12
Now
11
- Days with a base at the summit−3 days
Then
173
Now
170
- Average temperature at the summit+1.0°C+1.8°F
Then
-10°C14°F
Now
-9°C15°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
- 1950s1950/514.7 m184 in1951/523.3 m129 in1952/532.8 m110 in1953/543.2 m124 in1954/555.1 m199 in1955/563.6 m141 in1956/573.2 m124 in1957/584.1 m161 in1958/594.9 m193 in1959/605.3 m209 in
- 1960s1960/613.9 m152 in1961/624.8 m189 in1962/635.5 m217 in1963/643.8 m150 in1964/652.0 m80 in1965/665.0 m196 in1966/673.4 m133 in1967/683.3 m128 in1968/695.0 m198 in1969/704.3 m169 in
- 1970s1970/714.3 m170 in1971/725.6 m219 in1972/733.0 m117 in1973/745.4 m213 in1974/753.8 m151 in1975/763.4 m134 in1976/775.6 m222 in1977/786.2 m242 in1978/794.3 m169 in1979/804.7 m183 in
- 1980s1980/814.2 m164 in1981/824.4 m172 in1982/835.5 m218 in1983/843.7 m147 in1984/853.5 m139 in1985/865.9 m234 in1986/873.6 m140 in1987/884.4 m172 in1988/893.6 m143 in1989/903.8 m150 in
- 1990s1990/914.0 m156 in1991/922.6 m104 in1992/933.8 m150 in1993/944.3 m168 in1994/955.3 m208 in1995/963.7 m147 in1996/974.3 m169 in1997/983.7 m146 in1998/993.5 m138 in1999/003.8 m149 in
- 2000s2000/014.7 m186 in2001/022.7 m106 in2002/033.6 m140 in2003/045.1 m200 in2004/052.9 m113 in2005/063.0 m119 in2006/072.7 m107 in2007/083.4 m133 in2008/096.6 m261 in2009/104.0 m159 in
- 2010s2010/113.5 m137 in2011/124.4 m173 in2012/134.7 m185 in2013/144.3 m168 in2014/154.7 m184 in2015/163.8 m149 in2016/174.4 m175 in2017/186.4 m252 in2018/193.8 m151 in2019/205.5 m215 in
- 2020s2020/212.8 m110 in2021/222.9 m113 in2022/233.0 m116 in2023/245.9 m233 in2024/254.4 m173 in2025/263.5 m139 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