76 winters, day by day
Castle Mountain Resort, Canada. Every ski winter from 1950/51 to 2025/26.
Castle Mountain Resort, Canada. 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 10% of 736 resorts
+1.3°C+2.3°F
The trend: from -10°C13°F to -9°C15°F. Point at a winter to read it.
Snowfall at the summit
−23%
The trend: from 3.3 m128 in to 2.5 m98 in. Point at a winter to read it.
Powder days at the summit
−2 days
The trend: from 5 to 2. Point at a winter to read it.
Days with a base at the summit
−9 days
The trend: from 161 to 152. Point at a winter to read it.
Days with fresh snow at the summit
−12 days
The trend: from 80 to 68. 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−15%
Then
3.2 m126 in
Now
2.7 m106 in
- Snowfall in the village−20%
Then
2.1 m84 in
Now
1.7 m67 in
- Powder days at the summit−1 day
Then
4
Now
3
- Days with a base at the summit−7 days
Then
159
Now
152
- Average temperature at the summit+0.8°C+1.5°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
- 1950s1950/513.8 m151 in1951/522.2 m85 in1952/533.7 m144 in1953/544.7 m185 in1954/552.7 m105 in1955/563.6 m141 in1956/572.9 m113 in1957/582.8 m109 in1958/594.0 m156 in1959/603.0 m118 in
- 1960s1960/613.6 m143 in1961/622.5 m99 in1962/632.7 m106 in1963/643.4 m134 in1964/653.3 m131 in1965/663.1 m120 in1966/674.1 m163 in1967/683.0 m119 in1968/692.9 m113 in1969/702.6 m104 in
- 1970s1970/714.0 m159 in1971/724.1 m162 in1972/732.3 m91 in1973/744.5 m178 in1974/753.3 m128 in1975/763.4 m132 in1976/771.7 m67 in1977/782.8 m110 in1978/792.7 m106 in1979/802.5 m99 in
- 1980s1980/812.5 m100 in1981/823.1 m121 in1982/832.9 m115 in1983/842.1 m83 in1984/852.3 m91 in1985/862.1 m81 in1986/872.5 m96 in1987/882.2 m88 in1988/892.6 m103 in1989/903.2 m126 in
- 1990s1990/913.4 m135 in1991/921.9 m73 in1992/932.3 m91 in1993/942.2 m87 in1994/952.3 m92 in1995/963.5 m138 in1996/973.4 m135 in1997/982.1 m83 in1998/993.4 m132 in1999/002.5 m97 in
- 2000s2000/012.1 m81 in2001/023.1 m120 in2002/032.4 m93 in2003/042.1 m81 in2004/052.0 m77 in2005/062.8 m109 in2006/072.7 m107 in2007/082.8 m111 in2008/092.8 m109 in2009/102.1 m83 in
- 2010s2010/113.8 m150 in2011/123.2 m127 in2012/132.7 m107 in2013/143.4 m133 in2014/152.6 m104 in2015/162.3 m92 in2016/173.0 m119 in2017/183.4 m134 in2018/192.1 m83 in2019/202.7 m106 in
- 2020s2020/212.5 m98 in2021/222.7 m108 in2022/232.3 m91 in2023/242.6 m104 in2024/252.4 m94 in2025/263.1 m120 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