76 winters, day by day
Cannon Mountain, United States. Every ski winter from 1950/51 to 2025/26.
Cannon Mountain, United States. 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 20% of 736 resorts
+1.6°C+2.9°F
The trend: from -10°C15°F to -8°C18°F. Point at a winter to read it.
Snowfall at the summit
−13%
The trend: from 2.2 m86 in to 1.9 m74 in. Point at a winter to read it.
Powder days at the summit
−1 day
The trend: from 4 to 3. Point at a winter to read it.
Days with a base at the summit
−33 days
The trend: from 119 to 85. Point at a winter to read it.
Days with fresh snow at the summit
−5 days
The trend: from 50 to 45. 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−8%
Then
2.2 m86 in
Now
2.0 m79 in
- Snowfall in the village−8%
Then
2.2 m86 in
Now
2.0 m79 in
- Powder days at the summit±0 days
Then
4
Now
4
- Days with a base at the summit−22 days
Then
118
Now
97
- Average temperature at the summit+1.1°C+2.0°F
Then
-9°C15°F
Now
-8°C17°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
- 1950s1950/512.3 m89 in1951/522.7 m104 in1952/532.1 m84 in1953/542.4 m93 in1954/552.2 m87 in1955/562.4 m94 in1956/571.5 m61 in1957/583.1 m123 in1958/592.0 m80 in1959/602.3 m89 in
- 1960s1960/611.9 m73 in1961/622.2 m85 in1962/632.4 m94 in1963/641.9 m73 in1964/651.6 m61 in1965/662.0 m80 in1966/671.7 m66 in1967/681.9 m75 in1968/693.1 m120 in1969/702.0 m79 in
- 1970s1970/712.6 m101 in1971/722.6 m102 in1972/732.4 m94 in1973/742.0 m79 in1974/752.4 m94 in1975/762.3 m89 in1976/772.3 m89 in1977/782.3 m89 in1978/792.2 m87 in1979/801.2 m46 in
- 1980s1980/811.3 m53 in1981/822.5 m96 in1982/831.5 m57 in1983/842.2 m85 in1984/851.9 m76 in1985/861.7 m65 in1986/872.0 m77 in1987/881.6 m64 in1988/891.5 m61 in1989/901.8 m70 in
- 1990s1990/911.5 m59 in1991/921.6 m61 in1992/932.0 m77 in1993/942.2 m87 in1994/951.5 m58 in1995/962.4 m94 in1996/972.6 m102 in1997/982.1 m81 in1998/991.9 m74 in1999/001.9 m73 in
- 2000s2000/012.5 m99 in2001/022.0 m77 in2002/032.0 m78 in2003/041.8 m70 in2004/051.7 m67 in2005/061.4 m54 in2006/072.4 m96 in2007/082.6 m102 in2008/092.0 m80 in2009/102.2 m85 in
- 2010s2010/112.4 m94 in2011/121.3 m52 in2012/131.7 m67 in2013/141.9 m75 in2014/152.3 m91 in2015/161.1 m43 in2016/172.2 m87 in2017/182.1 m83 in2018/192.6 m102 in2019/202.3 m90 in
- 2020s2020/211.7 m67 in2021/221.9 m75 in2022/232.0 m78 in2023/242.2 m87 in2024/252.0 m78 in2025/261.7 m67 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