76 winters, day by day
Mount Washington Alpine Resort, Canada. Every ski winter from 1950/51 to 2025/26.
Mount Washington Alpine Resort, Canada. 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 -5°C23°F to -4°C26°F. Point at a winter to read it.
Snowfall at the summit
−43%
The trend: from 4.9 m193 in to 2.8 m111 in. Point at a winter to read it.
Powder days at the summit
−9 days
The trend: from 16 to 7. Point at a winter to read it.
Days with a base at the summit
−22 days
The trend: from 162 to 141. Point at a winter to read it.
Days with fresh snow at the summit
−19 days
The trend: from 68 to 49. 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−25%
Then
4.6 m180 in
Now
3.4 m135 in
- Snowfall in the village−26%
Then
4.3 m171 in
Now
3.2 m126 in
- Powder days at the summit−5 days
Then
15
Now
10
- Days with a base at the summit−12 days
Then
157
Now
144
- Average temperature at the summit+0.9°C+1.7°F
Then
-5°C23°F
Now
-4°C25°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
- 1950s1950/514.1 m162 in1951/526.5 m255 in1952/535.2 m203 in1953/544.5 m178 in1954/554.2 m166 in1955/567.5 m296 in1956/573.7 m145 in1957/584.4 m174 in1958/594.2 m165 in1959/604.7 m183 in
- 1960s1960/614.6 m182 in1961/624.0 m159 in1962/632.8 m109 in1963/645.1 m199 in1964/653.9 m155 in1965/665.4 m213 in1966/673.8 m151 in1967/685.0 m197 in1968/696.5 m257 in1969/702.8 m111 in
- 1970s1970/715.9 m233 in1971/725.0 m195 in1972/734.1 m161 in1973/746.5 m257 in1974/755.3 m208 in1975/764.5 m178 in1976/771.7 m65 in1977/783.2 m125 in1978/794.2 m164 in1979/803.6 m142 in
- 1980s1980/811.5 m57 in1981/825.9 m233 in1982/833.6 m141 in1983/843.1 m123 in1984/854.1 m161 in1985/862.3 m92 in1986/873.5 m136 in1987/883.7 m145 in1988/893.4 m135 in1989/903.1 m122 in
- 1990s1990/913.7 m145 in1991/922.4 m93 in1992/932.9 m113 in1993/943.0 m118 in1994/954.6 m181 in1995/962.2 m86 in1996/974.9 m194 in1997/983.6 m143 in1998/997.8 m305 in1999/003.5 m137 in
- 2000s2000/012.5 m97 in2001/023.7 m144 in2002/032.6 m101 in2003/043.4 m135 in2004/052.1 m81 in2005/063.9 m153 in2006/075.1 m201 in2007/084.7 m183 in2008/093.3 m129 in2009/103.5 m139 in
- 2010s2010/115.5 m215 in2011/125.0 m197 in2012/133.3 m130 in2013/142.6 m100 in2014/1577 cm30 in2015/163.0 m119 in2016/173.4 m135 in2017/182.9 m116 in2018/192.4 m95 in2019/202.9 m113 in
- 2020s2020/213.2 m126 in2021/223.6 m143 in2022/233.5 m138 in2023/242.4 m95 in2024/252.4 m94 in2025/261.6 m64 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