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SkiWeather.eu Ski Decision Planner

Le Grand Bornand 7-day ski planner

Choose the strongest skiing window using an explainable combination of current snow, altitude-specific fresh snow,…

Horizon7 days
Terrain1000–2485 m
Best dayMonday
Best score76/100
NowThermal state-1° to 6°C57% confidenceObservedFresh snow0 cm fresh57% confidenceDecisionBest skiing dayMonday · 76/10087% confidenceShort rangeIncoming snow0.0 cm weighted across altitude bands87% confidenceShort rangeWeather supportSunny · peak wind 5 km/h87% confidence

Best skiing window

The strongest current balance of snow support, fresh snow, temperature, visibility and wind.

Best dayMondayNov 2
76/100Good
Forecast confidenceHigh87/100 evidence confidence
  • + Good visibility is likely
  • + Wind should have little operational impact
  • + Temperatures are favorable for snow quality
Day 1SundayNov 1
72/100Good
Sunny-1 to 6 °C0 cm weighted fresh snowConfidence High
Snow55
Fresh snow55
Weather70
Visibility96
Wind100
  • + Good visibility is likely
  • + Wind should have little operational impact
Altitude-band detail
Lower1000 m

Temperature1 to 8 °C

Fresh snow0 cm

Precipitation phaseDry

Mid1480 m

Temperature-2 to 5 °C

Fresh snow0 cm

Precipitation phaseDry

Upper2485 m

Temperature-9 to -1 °C

Fresh snow0 cm

Precipitation phaseDry

Band temperatures are estimated from the canonical resort forecast using a standard 6.5 °C/km lapse rate; published freezing level and altitude-band fresh-snow forecasts remain direct forecast inputs.

Day 2MondayNov 2
76/100Good
Sunny-2 to 5 °C0 cm weighted fresh snowConfidence High
Snow55
Fresh snow55
Weather88
Visibility96
Wind100
  • + Good visibility is likely
  • + Wind should have little operational impact
  • + Temperatures are favorable for snow quality
Altitude-band detail
Lower1000 m

Temperature0 to 7 °C

Fresh snow0 cm

Precipitation phaseDry

Mid1480 m

Temperature-4 to 3 °C

Fresh snow0 cm

Precipitation phaseDry

Upper2485 m

Temperature-10 to -3 °C

Fresh snow0 cm

Precipitation phaseDry

Band temperatures are estimated from the canonical resort forecast using a standard 6.5 °C/km lapse rate; published freezing level and altitude-band fresh-snow forecasts remain direct forecast inputs.

Day 3TuesdayNov 3
74/100Good
Partly cloudy-2 to 5 °C0 cm weighted fresh snowConfidence High
Snow55
Fresh snow55
Weather88
Visibility80
Wind100
  • + Wind should have little operational impact
  • + Temperatures are favorable for snow quality
Altitude-band detail
Lower1000 m

Temperature0 to 7 °C

Fresh snow0 cm

Precipitation phaseDry

Mid1480 m

Temperature-4 to 4 °C

Fresh snow0 cm

Precipitation phaseDry

Upper2485 m

Temperature-10 to -2 °C

Fresh snow0 cm

Precipitation phaseDry

Band temperatures are estimated from the canonical resort forecast using a standard 6.5 °C/km lapse rate; published freezing level and altitude-band fresh-snow forecasts remain direct forecast inputs.

Day 4WednesdayNov 4
69/100Fair
Partly cloudy0 to 8 °C0 cm weighted fresh snowConfidence High
Snow49
Fresh snow55
Weather70
Visibility80
Wind100
  • + Wind should have little operational impact
  • − Snow support is limited on part of the terrain
Altitude-band detail
Lower1000 m

Temperature2 to 10 °C

Fresh snow0 cm

Precipitation phaseDry

Mid1480 m

Temperature-1 to 7 °C

Fresh snow0 cm

Precipitation phaseDry

Upper2485 m

Temperature-7 to 0 °C

Fresh snow0 cm

Precipitation phaseDry

Band temperatures are estimated from the canonical resort forecast using a standard 6.5 °C/km lapse rate; published freezing level and altitude-band fresh-snow forecasts remain direct forecast inputs.

Day 5ThursdayNov 5
69/100Fair
Partly cloudy0 to 10 °C0 cm weighted fresh snowConfidence Moderate
Snow49
Fresh snow55
Weather70
Visibility80
Wind100
  • + Wind should have little operational impact
  • − Snow support is limited on part of the terrain
Altitude-band detail
Lower1000 m

Temperature2 to 12 °C

Fresh snow0 cm

Precipitation phaseDry

Mid1480 m

Temperature-2 to 8 °C

Fresh snow0 cm

Precipitation phaseDry

Upper2485 m

Temperature-8 to 2 °C

Fresh snow0 cm

Precipitation phaseDry

Band temperatures are estimated from the canonical resort forecast using a standard 6.5 °C/km lapse rate; published freezing level and altitude-band fresh-snow forecasts remain direct forecast inputs.

Day 6FridayNov 6
63/100Fair
Partly cloudy1 to 12 °C0 cm weighted fresh snowConfidence Moderate
Snow44
Fresh snow55
Weather48
Visibility80
Wind100
  • + Wind should have little operational impact
  • − Snow support is limited on part of the terrain
Altitude-band detail
Lower1000 m

Temperature3 to 14 °C

Fresh snow0 cm

Precipitation phaseDry

Mid1480 m

Temperature0 to 11 °C

Fresh snow0 cm

Precipitation phaseDry

Upper2485 m

Temperature-7 to 4 °C

Fresh snow0 cm

Precipitation phaseDry

Band temperatures are estimated from the canonical resort forecast using a standard 6.5 °C/km lapse rate; published freezing level and altitude-band fresh-snow forecasts remain direct forecast inputs.

Day 7SaturdayNov 7
72/100Good
Sunny3 to 7 °C0 cm weighted fresh snowConfidence Moderate
Snow52
Fresh snow55
Weather70
Visibility96
Wind100
  • + Good visibility is likely
  • + Wind should have little operational impact
Altitude-band detail
Lower1000 m

Temperature5 to 9 °C

Fresh snow0 cm

Precipitation phaseDry

Mid1480 m

Temperature2 to 6 °C

Fresh snow0 cm

Precipitation phaseDry

Upper2485 m

Temperature-5 to 0 °C

Fresh snow0 cm

Precipitation phaseDry

Band temperatures are estimated from the canonical resort forecast using a standard 6.5 °C/km lapse rate; published freezing level and altitude-band fresh-snow forecasts remain direct forecast inputs.

How the Ski Decision score works

An explainable planning score, not a stored source metric.

The daily score combines Snow 25%, Fresh Snow 15%, Weather 20%, Visibility 15%, Wind 15%, Operation 10%. Missing inputs reduce confidence rather than automatically lowering the skiing score. Rain at ski altitude, strong wind and poor visibility are explicit penalties; fresh snow and a well-supported existing base are positive signals.

The overall score should be used together with official lift status, avalanche bulletins, closures and local safety guidance. It does not replace operational or avalanche information.