Mont Blanc Weather
Summit forecast at 4806 m · Western Alps · FR · SAC WS
Summit window
No safe summit window today
bitter cold from 08:00
No safe summit window tomorrow — bitter cold from 08:00
Mountain weather changes fast. This is a forecast, not a safety guarantee — check official mountain forecasts and turn back when in doubt.
7-day summit forecast
| Day | Low / High | Summit wind | Rain | Freezing level | Storm risk |
|---|---|---|---|---|---|
| ☀️ Today | -22° / -17° | 19 km/h | 1% | 1760–2470 m | low |
| ⛅ Wed, Nov 4 | -21° / -17° | 23 km/h | 25% | 1870–2490 m | low |
| 🌤 Thu, Nov 5 | -21° / -15° | 33 km/h | 17% | 1840–2550 m | low |
| ⛅ Fri, Nov 6 | -18° / -15° | 39 km/h | 62% | 2000–2480 m | low |
| ☀️ Sat, Nov 7 | -20° / -16° | 38 km/h | 41% | 1890–2370 m | low |
| 🌨 Sun, Nov 8 | -20° / -15° | 54 km/h | 25% | 1840–2480 m | low |
| ⛈ Mon, Nov 9 | -18° / -14° | 59 km/h | 34% | 2110–2950 m | low |
Temperatures at the summit (4806 m), blended from 9 weather models (ECMWF IFS, NOAA GFS, DWD ICON, UK Met Office, Canada GEM, JMA (Japan), Météo-France, KNMI HARMONIE, DMI HARMONIE).
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