76 winters, day by day
Sunday River, United States. Every ski winter from 1950/51 to 2025/26.
Sunday River, 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 -8°C17°F to -7°C20°F. Point at a winter to read it.
Snowfall at the summit
−12%
The trend: from 2.2 m87 in to 1.9 m76 in. Point at a winter to read it.
Powder days at the summit
−1 day
The trend: from 5 to 4. Point at a winter to read it.
Days with a base at the summit
−24 days
The trend: from 115 to 90. Point at a winter to read it.
Days with fresh snow at the summit
−4 days
The trend: from 42 to 37. 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−7%
Then
2.2 m86 in
Now
2.0 m80 in
- Snowfall in the village−12%
Then
1.5 m58 in
Now
1.3 m51 in
- Powder days at the summit±0 days
Then
5
Now
5
- Days with a base at the summit−15 days
Then
115
Now
100
- Average temperature at the summit+1.1°C+2.0°F
Then
-8°C18°F
Now
-7°C20°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
- 1950s1950/512.2 m87 in1951/522.9 m114 in1952/532.1 m83 in1953/542.5 m97 in1954/552.2 m88 in1955/562.1 m82 in1956/571.4 m55 in1957/583.5 m139 in1958/592.0 m77 in1959/602.3 m90 in
- 1960s1960/612.0 m80 in1961/622.2 m87 in1962/632.4 m96 in1963/641.5 m60 in1964/651.6 m63 in1965/662.0 m78 in1966/671.6 m64 in1967/681.8 m71 in1968/693.2 m125 in1969/701.9 m74 in
- 1970s1970/712.5 m96 in1971/722.6 m102 in1972/732.5 m99 in1973/742.1 m82 in1974/752.6 m101 in1975/762.2 m87 in1976/772.1 m82 in1977/782.4 m96 in1978/792.4 m93 in1979/801.0 m40 in
- 1980s1980/811.1 m45 in1981/822.4 m94 in1982/831.6 m64 in1983/842.3 m91 in1984/851.8 m70 in1985/861.8 m71 in1986/872.3 m91 in1987/881.8 m70 in1988/891.5 m60 in1989/901.7 m67 in
- 1990s1990/911.6 m64 in1991/921.5 m61 in1992/932.0 m80 in1993/942.3 m89 in1994/951.6 m63 in1995/962.4 m96 in1996/972.7 m107 in1997/982.2 m85 in1998/991.8 m72 in1999/001.7 m65 in
- 2000s2000/012.6 m101 in2001/022.0 m77 in2002/031.9 m74 in2003/041.5 m59 in2004/051.9 m74 in2005/061.4 m57 in2006/072.6 m103 in2007/082.7 m107 in2008/092.1 m81 in2009/102.3 m92 in
- 2010s2010/112.4 m94 in2011/121.4 m53 in2012/131.9 m74 in2013/142.0 m80 in2014/152.2 m88 in2015/161.1 m43 in2016/172.5 m98 in2017/182.0 m78 in2018/192.8 m109 in2019/202.4 m96 in
- 2020s2020/211.6 m65 in2021/221.8 m69 in2022/232.1 m81 in2023/242.4 m94 in2024/251.8 m70 in2025/261.4 m57 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