Alaska mountains

Mount Augusta mountain forecast

14,072 ft (4,289 m) · prominence 5,016 ft (1,529 m) · Alaska

At the summit’s height the GFS model has 3°F and wind from the S at 11 mph, a wind chill of -13°F, Fri, Sep 25, 10:00 PM AKDT. The freezing level is at 3,396 ft, 10,676 ft below the summit.

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Now

Summit
14,072 ft (4,289 m)
Summit temperature
3°F
Summit wind
S 11 mph
Freezing level
3,396 ft

At the summit’s height

Temperature, wind and wind chill up there, and the freezing level, every six hours for three days.

TimeTempWindWind chillFreezing level
Fri, Sep 25, 10:00 PM AKDT3°FS 11 mph-13°F3,396 ft10,676 ft below the summit
Sat, Sep 26, 4:00 AM AKDT3°FS 11 mph-13°F3,963 ft10,108 ft below the summit
Sat, Sep 26, 10:00 AM AKDT3°FSSE 12 mph-14°F3,911 ft10,161 ft below the summit
Sat, Sep 26, 4:00 PM AKDT1°FS 18 mph-20°F4,570 ft9,501 ft below the summit
Sat, Sep 26, 10:00 PM AKDT0°FS 12 mph-17°F4,534 ft9,537 ft below the summit
Sun, Sep 27, 4:00 AM AKDT2°FSSE 22 mph-19°F4,583 ft9,488 ft below the summit
Sun, Sep 27, 10:00 AM AKDT-1°FSSW 16 mph-22°F4,524 ft9,547 ft below the summit
Sun, Sep 27, 4:00 PM AKDT-2°FSSW 9 mph-18°F4,626 ft9,446 ft below the summit
Sun, Sep 27, 10:00 PM AKDT-3°FS 7 mph-18°F3,077 ft10,994 ft below the summit
Mon, Sep 28, 4:00 AM AKDT-4°FSSW 7 mph-18°F3,136 ft10,935 ft below the summit
Mon, Sep 28, 10:00 AM AKDT-4°FSW 5 mph-16°F3,425 ft10,646 ft below the summit
Mon, Sep 28, 4:00 PM AKDT-4°FSW 4 mph-14°F3,983 ft10,089 ft below the summit

NOAA’s GFS model, run Fri, Sep 25, 4:00 PM AKDT, interpolated to 14,072 ft between its pressure levels: the free air over the summit, which on a ridge is close to what a climber feels and in a sheltered spot is more than it. Wind chill is the National Weather Service’s formula, given where the temperature is 50°F or less and the wind above 3 mph.

Snow

No snow in the National Weather Service’s forecast for the summit’s grid cell over the next several days.

Sunrise and sunset

DayFirst lightSunriseSunsetLast lightDaylight
September 256:34 AM7:16 AM7:12 PM7:53 PM-13h -4m
September 266:37 AM7:19 AM7:08 PM7:50 PM-13h -11m
September 276:39 AM7:21 AM7:05 PM7:47 PM-13h -16m
September 286:42 AM7:24 AM7:02 PM7:44 PM-13h -22m
September 296:44 AM7:26 AM6:59 PM7:41 PM-13h -27m
September 306:46 AM7:28 AM6:56 PM7:38 PM-13h -32m
October 16:49 AM7:31 AM6:53 PM7:35 PM-13h -38m

For a sea-level horizon at the summit’s position, local time. From a summit the horizon sits lower, so the sun is seen a few minutes before sunrise and after sunset; a ridge to the east or west does the opposite.

Elevation
14,072 ft (4,289 m)
Prominence
5,016 ft (1,529 m)
Coordinates
60.3053, -140.4603
Nearest town
Yakutat

What this means

Why a summit forecast differs
The air cools with height, by about 3.6°F per 1,000 feet on average, and the wind above a ridge blows at the speed of the free atmosphere rather than slowed by the valley floor. A town’s forecast says little about the top of the mountain above it.
Freezing level
The height where the air is at 32°F (0°C). Above it precipitation falls as snow and wet rock freezes; the snow line usually sits a few hundred to a thousand feet below it.
Wind chill
How cold the air feels on exposed skin, from the temperature and the wind, by the National Weather Service’s 2001 formula.
Cloud base
Where cloud begins. When it is below the summit, the top is in cloud: no view, and in cold air, rime ice and poor visibility.
Prominence
How far a summit rises above the lowest contour line that encircles it and no higher summit: the measure of a mountain’s own height, not its neighbors’.

Nearby

Summits

Forecasts from the National Weather Service. Summit-height temperature, wind and freezing level from NOAA’s Global Forecast System on NOAA Open Data. Summits from Wikidata (CC0): prominence >= 600 m, or elevation >= 4267 m, or >= 12 Wikipedia editions; English Wikipedia article required; read 2026-09-25. Mountain weather changes fast; check the forecast again before you go.