76 winters, day by day
Arapahoe Basin, United States. Every ski winter from 1950/51 to 2025/26.
Arapahoe Basin, 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 29% of 736 resorts
+1.8°C+3.3°F
The trend: from -13°C9°F to -11°C12°F. Point at a winter to read it.
Snowfall at the summit
−5%
The trend: from 2.3 m91 in to 2.2 m87 in. Point at a winter to read it.
Powder days at the summit
±0 days
The trend: from 2 to 2. Point at a winter to read it.
Days with a base at the summit
−15 days
The trend: from 142 to 127. Point at a winter to read it.
Days with fresh snow at the summit
−5 days
The trend: from 65 to 60. 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−3%
Then
2.3 m89 in
Now
2.2 m86 in
- Snowfall in the village−4%
Then
2.2 m86 in
Now
2.1 m82 in
- Powder days at the summit±0 days
Then
1
Now
2
- Days with a base at the summit−7 days
Then
137
Now
130
- Average temperature at the summit+1.2°C+2.1°F
Then
-13°C9°F
Now
-12°C11°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
- 1950s1950/512.7 m107 in1951/523.0 m118 in1952/532.2 m87 in1953/541.7 m69 in1954/552.0 m78 in1955/562.5 m99 in1956/572.7 m107 in1957/582.3 m90 in1958/592.4 m96 in1959/602.2 m85 in
- 1960s1960/612.2 m85 in1961/622.5 m97 in1962/631.7 m68 in1963/642.0 m80 in1964/652.6 m102 in1965/661.5 m58 in1966/672.0 m79 in1967/682.0 m79 in1968/692.0 m77 in1969/702.1 m82 in
- 1970s1970/712.2 m88 in1971/722.1 m81 in1972/732.3 m90 in1973/742.7 m107 in1974/752.4 m94 in1975/762.2 m85 in1976/771.7 m68 in1977/782.6 m101 in1978/792.4 m96 in1979/802.9 m115 in
- 1980s1980/811.6 m63 in1981/822.4 m94 in1982/832.6 m104 in1983/843.7 m146 in1984/852.2 m85 in1985/862.6 m104 in1986/872.2 m85 in1987/882.4 m94 in1988/892.7 m107 in1989/902.6 m100 in
- 1990s1990/912.4 m94 in1991/922.1 m83 in1992/932.7 m105 in1993/942.1 m81 in1994/952.5 m99 in1995/962.5 m98 in1996/972.7 m105 in1997/981.9 m74 in1998/992.2 m88 in1999/002.0 m80 in
- 2000s2000/011.9 m74 in2001/021.4 m56 in2002/032.4 m94 in2003/041.9 m76 in2004/052.2 m85 in2005/062.3 m90 in2006/072.3 m90 in2007/082.5 m100 in2008/092.5 m99 in2009/102.2 m86 in
- 2010s2010/112.5 m97 in2011/121.4 m57 in2012/132.0 m77 in2013/142.7 m106 in2014/151.9 m74 in2015/162.6 m103 in2016/172.5 m98 in2017/182.1 m82 in2018/192.5 m99 in2019/202.2 m86 in
- 2020s2020/212.1 m82 in2021/222.3 m89 in2022/232.3 m92 in2023/242.5 m96 in2024/252.2 m85 in2025/261.4 m56 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