Trillevallen, Sweden. 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 82% of 736 resorts
+2.7°C+4.9°F
The trend: from -9°C15°F to -7°C20°F. Point at a winter to read it.
Snowfall at the summit
+3%
The trend: from 1.8 m72 in to 1.9 m74 in. Point at a winter to read it.
Powder days at the summit
±0 days
The trend: from 1 to 1. Point at a winter to read it.
Days with a base at the summit
−20 days
The trend: from 157 to 136. Point at a winter to read it.
Days with fresh snow at the summit
+1 day
The trend: from 58 to 59. 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+2%
Then
1.8 m72 in
Now
1.9 m73 in
- Snowfall in the village+2%
Then
1.8 m72 in
Now
1.9 m73 in
- Powder days at the summit±0 days
Then
1
Now
1
- Days with a base at the summit−12 days
Then
152
Now
140
- Average temperature at the summit+1.7°C+3.1°F
Then
-9°C16°F
Now
-7°C19°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
- 1950s1950/511.7 m65 in1951/521.8 m70 in1952/531.9 m76 in1953/541.2 m46 in1954/551.7 m66 in1955/561.9 m76 in1956/571.5 m57 in1957/581.5 m61 in1958/591.9 m74 in1959/601.9 m75 in
- 1960s1960/611.8 m69 in1961/622.1 m81 in1962/631.4 m56 in1963/641.6 m64 in1964/652.1 m81 in1965/662.1 m84 in1966/672.3 m89 in1967/682.1 m81 in1968/691.6 m63 in1969/701.7 m67 in
- 1970s1970/711.9 m74 in1971/721.6 m62 in1972/732.1 m81 in1973/742.0 m80 in1974/752.3 m89 in1975/762.9 m113 in1976/771.8 m70 in1977/781.8 m72 in1978/791.4 m54 in1979/801.4 m55 in
- 1980s1980/812.0 m78 in1981/822.1 m81 in1982/832.1 m84 in1983/841.7 m68 in1984/852.1 m83 in1985/861.7 m67 in1986/872.1 m83 in1987/882.6 m104 in1988/892.3 m92 in1989/902.2 m87 in
- 1990s1990/911.6 m61 in1991/922.4 m93 in1992/932.0 m80 in1993/941.3 m52 in1994/952.2 m86 in1995/961.0 m41 in1996/972.4 m93 in1997/981.9 m76 in1998/991.8 m72 in1999/002.2 m88 in
- 2000s2000/011.7 m68 in2001/022.0 m78 in2002/031.5 m57 in2003/041.4 m54 in2004/052.2 m86 in2005/061.9 m74 in2006/071.9 m73 in2007/082.3 m89 in2008/091.9 m74 in2009/101.3 m53 in
- 2010s2010/111.8 m70 in2011/122.4 m94 in2012/131.3 m50 in2013/141.7 m67 in2014/151.9 m74 in2015/161.7 m68 in2016/171.9 m76 in2017/181.8 m70 in2018/191.9 m73 in2019/202.1 m83 in
- 2020s2020/212.1 m81 in2021/222.3 m89 in2022/231.9 m75 in2023/241.8 m71 in2024/251.8 m71 in2025/261.3 m49 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