76 winters, day by day
Waterville Valley Resort, United States. Every ski winter from 1950/51 to 2025/26.
Waterville Valley Resort, 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 15% of 736 resorts
+1.5°C+2.7°F
The trend: from -8°C17°F to -7°C20°F. Point at a winter to read it.
Snowfall at the summit
−14%
The trend: from 2.2 m87 in to 1.9 m74 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
−31 days
The trend: from 119 to 87. Point at a winter to read it.
Days with fresh snow at the summit
−4 days
The trend: from 43 to 39. 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−9%
Then
2.2 m87 in
Now
2.0 m79 in
- Snowfall in the village−12%
Then
1.8 m71 in
Now
1.6 m62 in
- Powder days at the summit−1 day
Then
5
Now
5
- Days with a base at the summit−21 days
Then
119
Now
99
- Average temperature at the summit+1.1°C+1.9°F
Then
-8°C17°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
- 1950s1950/512.2 m88 in1951/522.9 m114 in1952/532.1 m83 in1953/542.3 m89 in1954/552.2 m85 in1955/562.3 m92 in1956/571.6 m63 in1957/583.2 m127 in1958/592.0 m77 in1959/602.3 m89 in
- 1960s1960/611.9 m73 in1961/622.2 m86 in1962/632.4 m95 in1963/641.8 m70 in1964/651.7 m67 in1965/662.0 m80 in1966/671.9 m75 in1967/681.9 m76 in1968/693.1 m121 in1969/701.8 m71 in
- 1970s1970/712.5 m100 in1971/722.7 m105 in1972/732.4 m96 in1973/741.9 m76 in1974/752.6 m102 in1975/762.4 m93 in1976/772.1 m84 in1977/782.4 m94 in1978/792.3 m89 in1979/801.1 m42 in
- 1980s1980/811.3 m50 in1981/822.4 m95 in1982/831.5 m58 in1983/842.2 m85 in1984/851.8 m71 in1985/861.8 m70 in1986/872.2 m87 in1987/881.7 m68 in1988/891.6 m62 in1989/901.7 m68 in
- 1990s1990/911.5 m59 in1991/921.4 m57 in1992/932.1 m83 in1993/942.2 m85 in1994/951.5 m61 in1995/962.5 m98 in1996/972.8 m110 in1997/982.1 m83 in1998/991.7 m69 in1999/001.6 m63 in
- 2000s2000/012.6 m104 in2001/021.8 m72 in2002/032.0 m80 in2003/041.5 m57 in2004/051.9 m73 in2005/061.3 m50 in2006/072.5 m99 in2007/082.8 m109 in2008/092.0 m79 in2009/102.5 m97 in
- 2010s2010/112.2 m85 in2011/121.4 m54 in2012/131.8 m70 in2013/141.9 m76 in2014/152.2 m87 in2015/161.1 m42 in2016/172.4 m94 in2017/182.1 m81 in2018/192.6 m101 in2019/202.4 m93 in
- 2020s2020/211.6 m62 in2021/221.9 m74 in2022/232.1 m82 in2023/242.3 m89 in2024/251.9 m75 in2025/261.6 m63 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