Mont Blanc massif · Auvergne-Rhône-Alpes · FranceSummit weather, forecast and climate

Mont Blanc

4,806 mFrance / Italy borderUltra-prominent peakSnow likely Jan–Dec

Elevation4,806 mabove sea level

Prominence4,692 mindependent height

Isolation0.6 kmto a higher summit

Summit, Jul0°average high

45.83° N, 6.87° EElevation 4,806 mUTC+2 · Central European Summer Time

From the valley to the top

Summit4,806 m
Mid-mountain3,060 m
Valley · Entrèves1,321 m

Freezing level in October: 2,700 m

iThe mountain

Mont Blanc in brief

Mont Blanc rises to 4,806 m in the Mont Blanc massif, Auvergne-Rhône-Alpes, France. Its topographic prominence — the height it stands above the lowest contour enclosing a higher summit — is 4,692 m, which makes it an ultra-prominent peak.

At the summit, July is the mildest month with average highs of 0°, while nights stay below freezing all year. Even daytime highs stay below zero in every month.

The summit lies on the border between France and Italy, so it appears in the mountain lists of both countries.

The nearest town in the atlas is Entrèves, 7.6 km to the E at 1,321 m.

Facts

Elevation: 4,806 m · 15,766 ft
Prominence: 4,692 m
Range: Mont Blanc massif
Region: Auvergne-Rhône-Alpes
Country: France
Coordinates: 45.8328, 6.8650
Nearest airport: Annecy Meythet airport (NCY) · 60 km

iiForecast

Weather at three heights

Temperatures are adjusted to each height; summits are usually colder and windier than the valley forecast suggests.

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iiiSummit climate

The top of Mont Blanc by month

Summit temperatures and precipitation

Climate normals for the summit area (~1 km grid), station-adjusted

Climate normals for Mont Blanc by month
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average high	-22°	-19°	-16°	-13°	-8°	-3°	0°	-1°	-4°	-9°	-16°	-21°
Average low	-30°	-29°	-25°	-22°	-18°	-13°	-10°	-11°	-14°	-19°	-25°	-29°
Precipitation	282 mm	237 mm	249 mm	217 mm	263 mm	257 mm	244 mm	241 mm	222 mm	268 mm	260 mm	320 mm
Cloud cover	41%	40%	41%	45%	43%	36%	27%	29%	34%	41%	43%	42%
Daylight	9h 03	10h 22	11h 51	13h 31	14h 55	15h 42	15h 23	14h 10	12h 35	10h 59	9h 30	8h 41
Month score	20	21	20	19	20	23	25	25	23	20	20	20

Snow and freezing level

Average height of the 0 °C level from the summit normals (6.5 °C per km); snow months have a summit mean at or below +1 °C

Snow likely Jan–Dec

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Freezing level	850 m	1,100 m	1,650 m	2,150 m	2,800 m	3,500 m	3,950 m	3,950 m	3,400 m	2,700 m	1,600 m	900 m
Summit	❄ snow	❄ snow	❄ snow	❄ snow	❄ snow	❄ snow	❄ snow	❄ snow	❄ snow	❄ snow	❄ snow	❄ snow

ivTerrain

Mont Blanc in 3D

vNeighbours

Peaks nearby

Mountains of France

Mountain	Elevation	Prominence	Distance	July summit high
Central Pillar of Frêney	4,810 m	–	0.6 km SE	-1°
rocher de la Tournette	4,677 m	–	0.4 km W	0°
les Bosses	4,547 m	–	0.7 km W	1°
Petite Bosse	4,547 m	2 m	0.9 km NW	1°
Grande Bosse	4,510 m	5 m	0.8 km W	1°
Picco Luigi Amedeo	4,469 m	39 m	1.8 km S	3°
Mont Maudit	4,465 m	162 m	1.9 km NE	2°
Dôme du Goûter	4,304 m	68 m	1.9 km NW	1°