76 winters, day by day
Three Summits, United States. Every ski winter from 1950/51 to 2025/26.
Three Summits, 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.
Loading the daily snowfall…
Climate change
Average winter temperature at the summit
Faster warming than 17% of 736 resorts
+1.5°C+2.8°F
The trend: from -3°C27°F to -1°C29°F. Point at a winter to read it.
Snowfall at the summit
−32%
The trend: from 5.4 m214 in to 3.7 m146 in. Point at a winter to read it.
Powder days at the summit
−5 days
The trend: from 14 to 9. Point at a winter to read it.
Days with a base at the summit
−16 days
The trend: from 161 to 145. Point at a winter to read it.
Days with fresh snow at the summit
−15 days
The trend: from 88 to 73. 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−19%
Then
5.3 m208 in
Now
4.3 m169 in
- Snowfall in the village−27%
Then
2.6 m104 in
Now
1.9 m75 in
- Powder days at the summit−3 days
Then
14
Now
11
- Days with a base at the summit−9 days
Then
158
Now
149
- Average temperature at the summit+0.9°C+1.7°F
Then
-3°C27°F
Now
-2°C29°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
- 1950s1950/515.5 m215 in1951/524.9 m191 in1952/535.4 m214 in1953/546.7 m264 in1954/555.6 m220 in1955/568.1 m317 in1956/574.6 m181 in1957/584.8 m190 in1958/595.1 m201 in1959/604.7 m184 in
- 1960s1960/615.8 m229 in1961/624.6 m181 in1962/633.2 m125 in1963/647.2 m283 in1964/655.2 m204 in1965/665.0 m197 in1966/675.7 m224 in1967/683.7 m146 in1968/695.8 m228 in1969/704.0 m159 in
- 1970s1970/717.7 m304 in1971/728.5 m335 in1972/733.0 m117 in1973/747.4 m289 in1974/755.7 m224 in1975/766.0 m236 in1976/772.0 m80 in1977/784.1 m162 in1978/794.2 m164 in1979/804.2 m163 in
- 1980s1980/812.4 m93 in1981/825.4 m212 in1982/833.7 m146 in1983/844.0 m159 in1984/854.6 m180 in1985/863.2 m126 in1986/873.6 m141 in1987/884.1 m162 in1988/894.6 m183 in1989/904.3 m169 in
- 1990s1990/914.1 m162 in1991/922.7 m105 in1992/933.2 m125 in1993/943.2 m126 in1994/954.2 m164 in1995/963.6 m141 in1996/976.6 m259 in1997/983.7 m146 in1998/996.3 m248 in1999/004.6 m182 in
- 2000s2000/013.1 m122 in2001/025.4 m214 in2002/033.3 m128 in2003/043.9 m155 in2004/051.8 m72 in2005/065.2 m206 in2006/074.8 m189 in2007/085.9 m231 in2008/094.7 m184 in2009/103.1 m121 in
- 2010s2010/115.0 m195 in2011/125.3 m207 in2012/134.7 m185 in2013/144.5 m176 in2014/151.9 m76 in2015/164.4 m171 in2016/174.6 m179 in2017/184.8 m190 in2018/193.6 m141 in2019/203.9 m155 in
- 2020s2020/215.1 m201 in2021/224.7 m183 in2022/234.0 m159 in2023/243.2 m124 in2024/253.5 m136 in2025/263.1 m121 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