Les Clefs - Col du Marais – Weather Forecast
Category 4Saint-Jean-de-Sixt, Auvergne-Rhône-Alpes, FR
This page shows a route-based weather forecast for the Les Clefs - Col du Marais cycling climb in Saint-Jean-de-Sixt, Auvergne-Rhône-Alpes, FR. Unlike a simple location forecast, conditions are calculated at every point along the climb — from the base to the summit — using the actual route profile and elevation data.
You'll see hour-by-hour temperature, wind speed and direction, precipitation probability, and cloud cover adjusted for altitude. Choose your planned departure time to align the forecast with your ride.
Les Clefs - Col du Marais
Plan Your Ride
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Calculating weather along route...
Trip Summary
Forecast A
Trip Summary A
Forecast B
Trip Summary B
Weather Display Options
Forecast A - Route Map
Forecast B - Route Map
Compare Reversed Route
Same departure time & speed — opposite direction
→ Original Direction
← Reversed Direction
Creates a new saved route in the reversed direction
Route Map
Elevation Profile
Temperature Along Route
Precipitation & Precipitation Probability Along Route
Wind Along Route
Humidity Along Route
Pollen Along Route
UV Index Along Route
Start place details
Weather Forecast
Hourly around Thu 16 Jul 20:27