76 winters, day by day
Montana Snowbowl, United States. Every ski winter from 1950/51 to 2025/26.
Montana Snowbowl, 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 74% of 736 resorts
+2.5°C+4.5°F
The trend: from -10°C14°F to -8°C18°F. Point at a winter to read it.
Snowfall at the summit
−20%
The trend: from 2.2 m85 in to 1.7 m68 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
−38 days
The trend: from 142 to 104. Point at a winter to read it.
Days with fresh snow at the summit
−12 days
The trend: from 64 to 53. 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−13%
Then
2.2 m85 in
Now
1.9 m74 in
- Powder days at the summit±0 days
Then
1
Now
1
- Days with a base at the summit−24 days
Then
137
Now
114
- Average temperature at the summit+1.6°C+2.8°F
Then
-10°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 in1951/521.9 m75 in1952/532.5 m96 in1953/542.4 m95 in1954/551.8 m71 in1955/562.8 m109 in1956/572.0 m78 in1957/581.9 m74 in1958/592.5 m99 in1959/601.9 m76 in
- 1960s1960/612.1 m83 in1961/622.0 m79 in1962/631.7 m66 in1963/642.5 m96 in1964/652.7 m107 in1965/661.8 m72 in1966/672.5 m99 in1967/682.1 m82 in1968/692.1 m82 in1969/702.2 m86 in
- 1970s1970/712.5 m97 in1971/723.1 m123 in1972/731.1 m44 in1973/742.9 m114 in1974/752.5 m98 in1975/762.4 m93 in1976/771.2 m46 in1977/782.1 m84 in1978/792.0 m80 in1979/801.6 m63 in
- 1980s1980/811.1 m43 in1981/822.3 m92 in1982/831.6 m61 in1983/841.7 m68 in1984/851.7 m67 in1985/861.6 m62 in1986/871.5 m57 in1987/881.6 m61 in1988/892.2 m85 in1989/901.6 m64 in
- 1990s1990/911.8 m71 in1991/921.5 m58 in1992/931.7 m65 in1993/941.1 m44 in1994/951.4 m56 in1995/962.1 m83 in1996/973.3 m129 in1997/981.2 m46 in1998/992.2 m87 in1999/001.6 m64 in
- 2000s2000/011.5 m57 in2001/021.9 m74 in2002/031.8 m72 in2003/041.6 m64 in2004/051.2 m48 in2005/061.9 m75 in2006/071.4 m53 in2007/082.3 m89 in2008/092.0 m80 in2009/101.3 m51 in
- 2010s2010/112.7 m106 in2011/122.0 m80 in2012/131.7 m66 in2013/142.4 m94 in2014/151.8 m69 in2015/161.6 m64 in2016/172.0 m77 in2017/182.8 m111 in2018/191.9 m76 in2019/201.8 m72 in
- 2020s2020/211.7 m67 in2021/222.0 m79 in2022/232.0 m80 in2023/241.2 m48 in2024/251.7 m69 in2025/261.9 m76 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